Awesome Agent Harness

A curated, implementation-first list of agent harness engineering resources, with GitHub projects as the primary focus.

• Total entries: 375
• GitHub entries: 341 (90.9%)
• GitHub in project categories (excluding readings): 336/336 (100.0%)
• Categories: 9
• Last verified: 2026-10-08
• Language: English | 中文

Featured Harness Blogs

• Scaling Managed Agents: Decoupling the brain from the hands: Anthropic's meta-harness architecture for decoupling session logs, harness loops, and sandboxes in long-horizon agents.
• What We Learned Building Cloud Agents: Cognition's field report on secure cloud-agent infrastructure, VM isolation, full-state snapshots, orchestration, governance, integrations, and enterprise adoption.
• Claude Code auto mode: Anthropic's write-up on classifier-backed approval delegation for safer high-autonomy coding-agent runs.
• Harness engineering (OpenAI): Field report on building reliable agent-first software via harness constraints and verification.
• The next evolution of the Agents SDK: OpenAI's product and engineering post on model-native agent harnesses, native sandbox execution, manifests, memory, and filesystem and shell tools.
• Building Effective AI Agents: Anthropic's practical guidance on when to use workflows vs. autonomous agents and how to structure them.
• Writing effective tools for AI agents: Best practices for tool interface design so agents call tools safely and reliably.
• Effective harnesses for long-running agents: Practical guide to maintaining state, resumability, and reliability over long agent runs.
• Harness design for long-running application development: Follow-up article on improving long-running app generation through harness structure.
• Improving Deep Agents with harness engineering: Evidence that harness improvements alone can move benchmark performance.
• Evaluating Deep Agents: Our Learnings: LangChain's practical lessons on evaluating stateful and long-horizon agents.
• Your Agent Needs a Harness, Not a Framework: Argument for reliability-first infrastructure around agents instead of framework-only thinking.
• How GPT-5.6 fuses frontier intelligence with frontier efficiency: OpenAI's engineering account of the Rust agentic harness behind Codex and ChatGPT Work, covering deferred tool discovery, bounded outputs, deterministic tool ordering, and prompt-cache preservation.
• How we contain Claude across products: Anthropic's cross-product containment architecture for claude.ai, Claude Code, and Cowork, spanning sandboxes, VMs, filesystem boundaries, egress controls, and approval fatigue.
• Introducing Agent Executor, Google’s distributed Agent Runtime: Google's distributed agent runtime design for durable execution, event-log snapshots, secure isolation, session consistency, reconnection, and trajectory branching.
• Building a safe, effective sandbox to enable Codex on Windows: OpenAI's implementation report on enforcing filesystem and network boundaries for Codex on Windows with restricted tokens, SIDs, and a dedicated command runner.
• Running Codex safely at OpenAI: OpenAI's operational blueprint for governing Codex with sandbox and approval policies, network controls, managed identity, configuration, telemetry, and audit trails.

Contents

• Category Overview
• Featured Harness Blogs
• Catalog
  • Harness Architecture & Orchestration
  • Context & Working-State Engineering
  • Execution Substrates & Sandboxing
  • Protocols, Tool Interfaces & Agent Contracts
  • Evaluation Harnesses & Benchmarks
  • Observability & Reliability Operations
  • Guardrails, Security & Governance
  • Reference Harness Implementations
  • Essential Readings & Ecosystem Maps
• Maintenance Notes
• Citation

Category Overview

Catalog

Notes:

• Stars are rendered as badges from snapshot values.
• Repository update dates are tracked in data/projects.yaml and validation reports.
• Entries are sorted by stars (descending) within each category.

Harness Architecture & Orchestration

Project	Link	Stars	Tags	Summary
Superpowers	GitHub		skills, workflow, cross-agent	Cross-agent software development methodology built from composable skills, mandatory workflows, worktrees, planning, TDD, review, and subagent execution.
Matt Pocock Skills	GitHub		skills, coding-agents, workflows	Composable engineering skills for Claude Code, Codex, and other coding agents, covering alignment, shared language, ADRs, specs, tests, and code review loops.
ECC	GitHub		cross-harness, hooks, skills	Cross-harness operator system combining skills, hooks, memory optimization, security scanning, and validation workflows for agentic work.
Langflow	GitHub		orchestration, mcp, observability	Visual agent workflow platform with multi-agent orchestration, conversation management, stepwise testing, API and MCP deployment, and tracing integrations.
gstack	GitHub		skills, qa, release	Claude Code and cross-agent skill stack that turns product planning, architecture review, QA, security, release, and retrospectives into repeatable agent workflows.
Addy's Agent Skills	GitHub		skills, quality-gates, coding-agents	Production-grade engineering skills for coding agents that package lifecycle workflows, quality gates, reviews, testing, debugging, security, and release practices.
DeerFlow	GitHub		long-horizon, memory, subagents	Long-horizon super-agent harness integrating memory, tools, subagents, and sandboxes.
Orca	GitHub		control-plane, worktrees, cross-agent	Cross-agent desktop and mobile control plane for running CLI coding agents in isolated worktrees, monitoring their state, reviewing changes, and steering remote or local sessions.
Ruflo	GitHub		multi-agent, swarm, mcp	Multi-agent orchestration platform for Claude Code with swarms, persistent memory, federation, plugins, and MCP hooks.
oh-my-openagent	GitHub		multi-harness, team-mode, skills	Multi-harness agent OS for OpenCode, Codex, Claude Code, and other coding agents with team-mode orchestration, background agents, MCPs, and skills.
AutoGen	GitHub		multi-agent, orchestration, framework	Programming framework for agentic AI with multi-agent interaction and orchestration.
CrewAI	GitHub		multi-agent, workflows, control-plane	Multi-agent automation framework with production Flows, autonomous Crews, event-driven control, tracing, guardrails, memory, and human review hooks.
Agno	GitHub		scale, runtime, management	Agent software runtime focused on running and managing agentic systems at scale.
LangGraph	GitHub		graph, workflow, runtime	Graph-based runtime for resilient stateful agents and deterministic workflow control.
Herdr	GitHub		terminal-runtime, persistent-sessions, cross-agent	Persistent terminal runtime for coding agents with reconnectable sessions, blocked and idle detection, agent-driven orchestration APIs, and plugin-extensible workflows.
Claude Code Router	GitHub		control-plane, routing, observability	Local model gateway and control plane for coding agents with provider profiles, conditional routing, credential pools, retries, fallbacks, tool extensions, quotas, and request traces.
ChatDev	GitHub		multi-agent, orchestration, workflows	Zero-code multi-agent orchestration platform for defining agents, workflows, and tasks, evolved from a virtual software-company harness.
Buzz	GitHub		collaboration, event-log, audit	Self-hostable human-agent workspace built on a signed event log, with scoped identities, audit trails, agent-first CLI and ACP bridges, workflows, Git events, search, and approvals.
AionUi	GitHub		multi-agent, control-plane, scheduling	Cross-platform cowork control plane with a built-in agent engine, external CLI-agent orchestration, team mode, per-agent approvals, remote channels, MCP management, and scheduled runs.
deepagents	GitHub		runtime, orchestration, long-running	Open-source harness for long-running, tool-using agents with planning and subagent patterns.
OpenAI Agents SDK (Python)	GitHub		sdk, handoff, workflows	Lightweight framework for multi-agent workflows, handoffs, and production patterns.
Semantic Kernel	GitHub		enterprise, orchestration, plugins	Enterprise-grade agentic application framework with orchestration and plugin patterns.
Symphony	GitHub		orchestration, control-plane, workflows	Ticket-driven orchestration layer that turns project work into isolated autonomous implementation runs.
Archon	GitHub		workflow-engine, worktrees, validation	Workflow engine for AI coding agents with YAML-defined phases, isolated worktrees, and validation gates.
Go Micro	GitHub		go, service-runtime, durable-flows	Go agent harness and service framework combining model loops, durable memory, tools, planning, delegation, guardrails, service discovery, MCP, A2A, and durable flows.
Google ADK (Python)	GitHub		toolkit, deployment, evaluation	Code-first toolkit to build, evaluate, and deploy advanced AI agents.
PydanticAI	GitHub		python, typing, schema	Type-safe Python framework for agents with strong schema contracts and tooling.
elizaOS	GitHub		agent-os, plugins, benchmarks	Extensible agent runtime and operating system with CLI scaffolding, agent loop, plugins, memory/state primitives, dashboards, connectors, and benchmark suites.
Gas Town	GitHub		multi-agent, workspaces, coordination	Multi-agent workspace manager for coordinating coding agents with persistent work tracking, git-backed hooks, handoffs, supervision, and merge queues.
CAMEL	GitHub		multi-agent, scalability, benchmarks	Multi-agent framework for large-scale agent systems with communication, stateful memory, environments, benchmarks, and coordination primitives.
QM	GitHub		multi-user, durable-sandbox, policy	Multiplayer organizational agent harness with per-person and per-room scopes, durable sandboxes, memory, permissions, schedules, policy controls, and swappable coding-agent runtimes.
CloudCLI	GitHub		control-plane, sessions, coding-agents	Web and mobile control surface for Claude Code, OpenCode, Cursor CLI, Codex, and Gemini CLI with project, terminal, file, Git, session, and plugin management.
Microsoft Agent Framework	GitHub		multi-agent, workflows, observability	Multi-language framework for building, orchestrating, and deploying AI agents with graph workflows and observability.
Hive	GitHub		harness, orchestration, runtime	Outcome-driven agent runtime harness with explicit control loops and orchestration blocks.
VoltAgent	GitHub		typescript, platform, runtime	TypeScript agent engineering platform built around open runtime abstractions.
Omnigent	GitHub		meta-harness, policies, sandboxes	Open-source meta-harness that orchestrates Claude Code, Codex, Cursor, Pi, and custom agents with shared sessions, cloud sandboxes, policies, and collaboration.
PraisonAI	GitHub		multi-agent, workflow, memory	Multi-agent workforce framework with autonomous planning, execution, memory, RAG, dashboards, and multi-provider model support.
mcp-agent	GitHub		mcp, runtime, workflow	Practical agent framework centered on MCP tool ecosystems and workflow composition.
Claude Squad	GitHub		terminal, sessions, worktrees	Terminal control plane for managing multiple Claude Code, Codex, Gemini, OpenCode, Amp, and other agent sessions with isolated git workspaces and review flows.
Flue	GitHub		typescript, headless, sandbox	TypeScript harness framework for building headless agents with sessions, tools, skills, and pluggable sandboxes.
Yao	GitHub		single-binary, runtime, autonomous	Single-binary runtime for defining and running autonomous agents.
Agent Squad	GitHub		routing, multi-agent, context	Multi-agent orchestration framework that routes requests, preserves conversation context, supports Python/TypeScript, and coordinates specialist agents.
Strands Agents	GitHub		sdk, mcp, tools	Model-driven agent SDK and monorepo with Python/TypeScript agent loops, provider adapters, tools, MCP integration, multi-agent systems, and streaming.
Open Multi-Agent	GitHub		multi-agent, dag, tracing	TypeScript-native multi-agent orchestrator that turns goals into task DAGs with parallel execution, MCP integration, and live tracing.
AIOS	GitHub		agent-os, kernel, runtime	AI Agent Operating System with a kernel and SDK for scheduling, context management, memory, storage, tools, deployment modes, and computer-use sandboxing.
Nexent	GitHub		zero-code, control-plane, multi-agent	Zero-code agent platform built around harness engineering principles, unifying tools, skills, memory, orchestration, constraints, feedback loops, and control planes.
Cloudflare Agents	GitHub		platform, deployment, runtime	Platform runtime for building and deploying agents with production infrastructure primitives.
Embabel Agent Framework	GitHub		jvm, planning, typed-flows	JVM agent framework for typed agentic flows with goals, actions, conditions, dynamic planning, platform modes, and testability.
cascadeflow	GitHub		runtime-policy, model-routing, budget-gates	In-process agent harness for per-step model routing, tool budget gates, runtime policy actions, and auditable control inside agent loops.
OpenAI Agents SDK (JS/TS)	GitHub		typescript, workflows, sandbox-agents	JavaScript/TypeScript framework for multi-agent workflows with handoffs, tools, guardrails, sessions, tracing, and sandbox agents.
Reef	GitHub		continual-learning, harness-optimization, versioning	Continual learning infrastructure connecting agent inference, feedback, evaluation, and versioned delivery to improve model weights, prompts, rules, and skills.
Docker Agent	GitHub		docker, runtime, container	Agent builder and runtime stack emphasizing container-native execution.
NeMo Agent Toolkit	GitHub		multi-agent, optimization, toolkit	Open toolkit for connecting and optimizing teams of AI agents.
Apache Burr	GitHub		state-machine, persistence, tracing	State-machine framework for decision-making agents and LLM apps with persistence, telemetry UI, tracing, and framework-agnostic execution.
AX	GitHub		distributed-runtime, isolated-actors, policy	Google's distributed agent runtime for coordinating agent loops, isolated actors, event logging, auditing, and policy.
Shannon	GitHub		multi-agent, temporal, sandbox	Production-oriented multi-agent orchestration framework with Temporal workflows, WASI sandboxing, OPA approvals, token budgets, and OpenTelemetry tracing.
tRPC-Agent-Go	GitHub		go, graph-workflows, observability	Go framework for production agent systems with graph workflows, tools, memory, evaluation, protocols, and OpenTelemetry observability.
Scion	GitHub		multi-agent, containers, orchestration	Experimental multi-agent orchestration testbed that runs isolated agent harnesses in containers, worktrees, and remote runtimes.
deepagentsjs	GitHub		typescript, langgraph, subagents	TypeScript agent harness with built-in planning, filesystem tools, subagents, and LangGraph-native runtime hooks.
oh-my-agent	GitHub		multi-agent, skills, cross-runtime	Portable multi-agent harness that projects shared agents, skills, workflows, and rules into multiple coding-agent runtimes.
LiteLLM Agent Control Plane	GitHub		control-plane, sessions, runtime	Agent control plane that provides one API and UI across OpenCode, Hermes, Claude Managed Agents, Cursor Agents API, DeepAgents, and OpenClaw runtimes.
Chorus	GitHub		ai-dlc, permissions, task-state	AI-human collaboration harness for session lifecycle, task state, sub-agent orchestration, observability, and recovery.
Pydantic AI Harness	GitHub		capabilities, hooks, pydantic	Official Pydantic AI capability library for composing tools, lifecycle hooks, instructions, and model settings into reusable agent harnesses.
Water	GitHub		python, framework, approval-gates	Python agent harness framework for orchestration, resilience, observability, guardrails, approval gates, sandboxing, and deployment.
OmniCoreAgent	GitHub		python, mcp, serving	Python production harness with model loop, tools, MCP, memory, workspace files, guardrails, events, subagents, background tasks, and REST/SSE serving.
hankweave	GitHub		long-horizon, runtime, checkpoints	Headless-first long-horizon runtime that orchestrates existing agent harnesses with sentinels, loops, checkpoints, and event journals.

Context & Working-State Engineering

Project	Link	Stars	Tags	Summary
Graphify	GitHub		knowledge-graph, skills, codex	Cross-agent skill and CLI that turns code, docs, schemas, and media into a queryable knowledge graph with Codex and Claude Code hooks.
claude-mem	GitHub		memory, context, session	Plugin-style memory layer that captures session history and reinjects relevant context into future coding runs.
Headroom	GitHub		context-compression, tool-output, mcp	Context-compression layer for agent tool outputs, logs, files, RAG chunks, and conversations, available as a library, proxy, agent wrapper, and MCP server.
CodeGraph	GitHub		knowledge-graph, mcp, code-context	Local code knowledge-graph MCP server and installer that wires semantic code intelligence into Claude Code, Codex, Gemini, Cursor, OpenCode, and other agents.
Mem0	GitHub		memory, state-management, retrieval	Universal memory layer for AI agents with user, session, and agent state, hybrid retrieval, SDKs, and self-hosted deployment.
MemPalace	GitHub		memory, local-first, mcp	Local-first verbatim memory layer with scoped semantic retrieval, pluggable storage backends, conversation mining, MCP integration, and reproducible LongMemEval results.
OpenViking	GitHub		context-database, memory, retrieval	Context database for agents that unifies memory, resources, and skills in a virtual filesystem with tiered loading, recursive retrieval, observable trajectories, and session-to-memory extraction.
code-review-graph	GitHub		code-context, mcp, incremental-indexing	Local-first code intelligence graph that incrementally maps dependencies and exposes targeted review context, blast-radius analysis, and risk-scored CI gates through MCP and CLI.
Cognee	GitHub		memory, knowledge-graph, sessions	Persistent agent memory platform combining knowledge graphs, vector retrieval, session distillation, feedback, and MCP or SDK integration across runs.
agentmemory	GitHub		memory, mcp, hooks	Persistent memory server for coding agents using hooks, MCP/REST integration, hybrid search, and shared session recall.
Beads	GitHub		memory, issue-tracking, work-state	Agent-optimized distributed issue tracker that stores long-horizon coding work as dependency-aware graph state with memory recall and multi-branch sync.
TencentDB Agent Memory	GitHub		memory, context-offloading, openclaw	Local agent memory plugin combining symbolic short-term state, layered long-term memory, traceability, and OpenClaw/Hermes integrations.
planning-with-files	GitHub		planning, skills, persistence	Skill package for persistent file-based planning in coding-agent workflows.
Hindsight	GitHub		memory, learning, mcp	Production agent memory system with retain, recall, and reflect operations, isolated memory banks, evidence-backed observations, coding-agent integrations, MCP, and memory-defense policies.
Context Mode	GitHub		context, mcp, session	MCP context optimization server that sandboxes tool output, indexes session events, and restores continuity across agent compactions.
Agent Skills for Context Engineering	GitHub		skills, context, production	Large skill library oriented around context engineering and production agents.
SkillOpt	GitHub		skills, optimization, validation-gates	Microsoft optimizer that trains reusable natural-language agent skills through trajectory edits, validation gates, and deployable skill artifacts.
Memori	GitHub		memory, context-injection, sessions	Agent memory layer with entity and process attribution, session capture, persistent recall, context injection, and SDK, MCP, OpenClaw, and Hermes integrations.
Trellis	GitHub		specs, memory, workflow	Multi-platform coding-agent workflow framework with task context, project memory, and spec injection.
memU	GitHub		memory, context, retrieval	Memory harness for AI agents that turns raw workspace data into structured, queryable context for agent retrieval.
EverOS	GitHub		memory, local-first, skills	Portable self-evolving memory runtime for agents, persisting readable Markdown with local SQLite/LanceDB indexes and reusable cases and skills.
MemOS	GitHub		persistent-memory, hybrid-retrieval, cross-agent	Agent memory infrastructure with editable memory graphs, isolated or shared memory cubes, asynchronous ingestion, and local hybrid-retrieval plugins for OpenClaw, Hermes, and DeepSeek Harness.
Context-Engineering Handbook	GitHub		context-engineering, handbook, practices	First-principles handbook focused on practical context engineering for agent systems.
CCPM	GitHub		planning, github-issues, parallel-execution	Spec-driven project-manager skill that turns PRDs and GitHub issues into persistent context and parallel agent execution.
Engram	GitHub		memory, mcp, single-binary	Agent-agnostic persistent memory system packaged as a Go binary with SQLite/FTS5, MCP server, HTTP API, CLI, TUI, and sync workflows.
ByteRover CLI	GitHub		context-memory, cli, mcp	Portable context-memory CLI for coding agents with a context tree, review workflow, versioning, built-in tools, cloud sync, and MCP integration.
Acontext	GitHub		skills, memory, progressive-disclosure	Skill-memory layer that distills agent runs into inspectable skill files and recalls them through agent-controlled tools.
Awesome Context Engineering	GitHub		awesome-list, context, survey	Survey-style list for context engineering resources and frameworks.
agentic-stack	GitHub		cross-harness, memory, skills	Portable memory, skills, protocols, and dashboard layer that keeps state across multiple coding-agent harnesses.
context-space	GitHub		context, infrastructure, mcp	Infrastructure project focused on context engineering building blocks and MCP-centric integrations.
Memorix	GitHub		memory, mcp, cross-agent	Local-first cross-agent memory control plane with MCP support, workspace sync, sessions, and orchestration state.
sd0x-dev-flow	GitHub		hooks, state-machine, claude-code	Claude Code harness layer with hook-enforced dual review, durable state-machine gates, context-compaction recovery, and fail-closed safety.

Execution Substrates & Sandboxing

Project	Link	Stars	Tags	Summary
Daytona	GitHub		sandbox, execution, infra	Secure and elastic sandbox infrastructure for running AI-generated code with file, Git, LSP, and execution APIs.
agent-browser	GitHub		browser, automation, cli	Native browser automation CLI for AI agents with accessibility snapshots, semantic locators, screenshots, streaming, and batch execution.
CUA	GitHub		computer-use, sandbox, infra	Infrastructure stack for computer-use agents with sandbox, SDK, and benchmark support.
Browser Harness	GitHub		browser, cdp, self-healing	Thin editable CDP harness that connects LLMs directly to real browsers and lets agents extend helpers in flight.
OpenSandbox	GitHub		sandbox, security, runtime	Secure and extensible sandbox runtime built for agent workloads.
E2B	GitHub		cloud-sandbox, execution, enterprise	Secure cloud environments with real tools for production-grade agent execution.
InsForge	GitHub		backend, mcp, coding-agents	Backend substrate for agentic coding that exposes database, auth, storage, compute, hosting, logs, and model-gateway operations through MCP and CLI/Skills.
CubeSandbox	GitHub		microvm, sandbox, e2b-compatible	MicroVM-based sandbox service for AI agents with sub-60ms startup, E2B-compatible APIs, and hardware-level isolation.
OpenShell	GitHub		sandbox, policy, runtime	Safe private runtime for autonomous agents with sandbox lifecycle control and declarative filesystem, network, process, and inference policies.
Microsandbox	GitHub		sandbox, vm, mcp	Rootless local VM sandbox runtime with SDKs, detached long-running sessions, agent skills, and MCP server integration.
Sandcastle	GitHub		sandbox, typescript, branch-strategy	TypeScript library for orchestrating coding agents inside isolated sandboxes with configurable branch strategies.
agent-infra sandbox	GitHub		all-in-one, browser, shell	All-in-one sandbox combining browser, shell, files, MCP, and IDE server.
Judge0	GitHub		code-execution, sandbox, backend	Scalable sandboxed code execution system usable as an agent execution backend.
Agent Sandbox	GitHub		kubernetes, sandbox, stateful	Kubernetes-native sandbox control plane for isolated, stateful agent runtimes with stable identity, persistence, and warm-pool support.
stakpak/agent	GitHub		always-on, autonomous, ops	Always-on open agent that runs on your machines with autonomous operational loops.
Sandbox Agent	GitHub		sandbox, coding-agents, session-schema	HTTP/SSE control server for running coding agents inside sandboxes with normalized sessions, permissions, event streaming, and replay.
E2B Desktop Sandbox	GitHub		desktop, sandbox, computer-use	Secure virtual desktop sandbox for computer-use agents with SDK control and screen streaming.
OSS-Fuzz Gen	GitHub		fuzzing, security, execution	LLM-powered fuzzing workflows integrated with controlled execution contexts.
AgentBay SDK	GitHub		cloud-sandbox, computer-use, sdk	Cloud sandbox SDK for agents spanning browser, desktop, mobile, and code execution environments.
Tensorlake	GitHub		microvm, sandbox, orchestration	Serverless runtime for agent sandboxes with MicroVM isolation, snapshots, suspend-resume, and background orchestration.
AgentScope Runtime	GitHub		runtime, sandbox, deployment	Production runtime for agent apps with secure tool sandboxes, deployment APIs, observability, and state services.
SWE-ReX	GitHub		sandbox, execution, coding-agent	Sandboxed execution infrastructure for AI coding agents at local and cloud scale.
sandboxed.sh	GitHub		self-hosted, isolation, orchestrator	Self-hosted orchestrator running coding agents inside isolated Linux workspaces.
Capsule	GitHub		wasm, sandbox, task-runtime	Durable runtime that coordinates agent tasks inside isolated WebAssembly sandboxes with retries and lifecycle tracking.
agentbox	GitHub		sandbox, coding-agents, network-policy	Locked-down local sandbox for AI coding agents with scoped filesystem access, egress policy, secret injection, firewalling, and persistent agent state.
HexAgent	GitHub		computer-layer, sandbox, runtime	Agent harness that separates the runtime from the computer it operates on through local, VM, and cloud sandbox backends.
terminal-bench-env	GitHub		terminal, benchmark-env, sandbox	Environment layer for terminal-agent benchmark execution.

Protocols, Tool Interfaces & Agent Contracts

Project	Link	Stars	Tags	Summary
Anthropic Agent Skills	GitHub		skills, spec, claude	Official Agent Skills repository containing the skills specification, templates, and reference skill implementations for Claude.
GitHub Spec Kit	GitHub		spec-driven, workflows, tooling	Toolkit for spec-driven development to guide deterministic agent execution.
MCP Servers	GitHub		mcp, servers, implementations	Official collection of MCP server implementations across tools and domains.
Chrome DevTools MCP	GitHub		mcp, browser, devtools	Official MCP server that gives coding agents Chrome DevTools access for reliable browser automation, debugging, and performance analysis.
AAS Core	GitHub		skills, control-plane, validation	Local agent-first control plane for discovering, selecting, validating, and planning reproducible skill stacks through a read-only MCP interface, manifests, plugins, and host-specific installers.
Awesome Copilot	GitHub		github-copilot, skills, hooks	GitHub-managed collection of Copilot agents, instructions, skills, hooks, workflows, plugins, tools, and machine-readable listings.
Playwright MCP	GitHub		mcp, browser, playwright	Official Playwright MCP server giving agents structured accessibility snapshots and deterministic browser automation tools.
Claude Code Plugins Directory	GitHub		plugins, claude-code, marketplace	Anthropic-managed Claude Code plugin marketplace defining plugin manifests, MCP configuration, commands, agents, skills, and submission quality gates.
OpenAI Codex Plugin for Claude Code	GitHub		plugin, codex, cross-agent	Official Claude Code plugin that exposes Codex review, adversarial review, delegation, status, result, and cancel commands inside another coding-agent harness.
GitHub MCP Server	GitHub		mcp, github, official	GitHub's official MCP server connecting agents to repositories, issues, pull requests, CI workflows, releases, and code analysis tools.
skills	GitHub		skills, cli, cross-agent	CLI for installing, using, finding, updating, and initializing Agent Skills across OpenCode, Claude Code, Codex, Cursor, and other coding agents.
Vercel Agent Skills	GitHub		skills, vercel, official	Vercel's official Agent Skills collection packaging reusable instructions and scripts in the open Agent Skills format for coding-agent workflows.
Serena	GitHub		mcp, coding-agents, semantic-tools	MCP toolkit that gives coding agents IDE-like semantic retrieval, editing, refactoring, debugging, and memory tools.
DESIGN.md	GitHub		spec, design-contract, cli	Format specification and CLI for giving coding agents persistent, machine-readable design tokens and human-readable design rationale.
FastMCP	GitHub		mcp, python, framework	Python framework for building MCP servers and clients with generated schemas, validation, documentation, production deployment patterns, and governance hooks.
Agent Skills Specification	GitHub		skills, spec, progressive-disclosure	Open specification and documentation for packaging reusable agent capabilities, workflows, scripts, references, and assets behind progressive disclosure.
AGENTS.md	GitHub		spec, agent-file, instructions	Open format for repository-local instructions that coding agents can follow.
MCP Python SDK	GitHub		mcp, python, sdk	Official Python implementation of MCP for building clients and servers that expose tools, resources, prompts, protocol lifecycle events, and standard transports.
Google Agent Skills	GitHub		skills, google-cloud, official	Official Google Agent Skills repository for Google products and technologies, including Agent Platform and Google Cloud workflows.
MCP Toolbox for Databases	GitHub		mcp, databases, google	Google open-source MCP server and custom tools framework for connecting agents, IDEs, and applications to enterprise databases.
MCP TypeScript SDK	GitHub		mcp, typescript, sdk	Official TypeScript MCP SDK with server and client packages, transports, auth helpers, middleware adapters, and runnable examples.
Hugging Face Skills	GitHub		skills, hugging-face, official	Official Hugging Face Agent Skills collection for packaging Hub, dataset, training, evaluation, Spaces, and tooling workflows across major coding agents.
MCP Inspector	GitHub		mcp, debugging, testing	Official developer tool for testing and debugging MCP servers through an interactive client UI and protocol bridge.
mcp-use	GitHub		mcp, framework, apps	Full-stack MCP framework for building MCP apps for ChatGPT and Claude and MCP servers for AI agents.
AWS MCP Servers	GitHub		mcp, aws, servers	AWS Labs suite of MCP servers exposing AWS documentation, cloud workflows, infrastructure operations, and service tooling to MCP clients.
Model Context Protocol	GitHub		mcp, protocol, interoperability	Core specification and docs for MCP-based tool and context interoperability.
MCP Registry	GitHub		mcp, registry, discovery	Official MCP registry service and publisher tooling that lets clients discover MCP servers through a shared server catalog.
.NET Agent Skills	GitHub		skills, dotnet, official	Microsoft .NET team's curated plugins, skills, custom agents, and evaluation dashboard for grounding coding agents on .NET and C# workflows.
SkillHub	GitHub		skills, registry, governance	Self-hosted enterprise agent skill registry with package publishing, versioning, discovery, namespaces, RBAC, reviews, and audit logs.
Builder.io Agent Skills	GitHub		skills, review, planning	Composable coding-agent skills for visual planning, visual recaps, watchdog reviews, plan arbitration, and autonomous execution discipline.
Agent Client Protocol	GitHub		acp, protocol, coding-agents	Open protocol that standardizes communication between code editors and coding agents.
directories (rules and MCP indexes)	GitHub		directories, mcp, rules	Curated directories of agent rules and MCP servers for tool discovery.
Atmosphere	GitHub		jvm, multi-protocol, governance	JVM runtime for streaming governable AI agents across MCP, A2A, AG-UI, and browser-facing transports.
Microsoft MCP Servers	GitHub		mcp, enterprise, servers	Microsoft's official MCP server catalog for enterprise data and tools.
LangChain MCP Adapters	GitHub		mcp, adapters, integration	Adapters connecting LangChain components with MCP servers.
ACPX	GitHub		acp, client, sessions	Headless CLI client for stateful Agent Client Protocol sessions.
Microsoft Agent Skills	GitHub		skills, mcp, official	Microsoft-maintained skills, custom agents, AGENTS.md templates, and MCP configurations for Azure SDK and Microsoft AI Foundry coding-agent workflows.
GitAgentProtocol	GitHub		standard, git-native, workflows	Git-native, framework-agnostic standard for defining agents, skills, workflows, tools, and runtime memory in repositories.
OpenGAP	GitHub		git-native, cli, agent-contract	Reference CLI for the Git Agent Protocol, turning repository files into portable agent manifests, rules, skills, workflows, tools, memory, hooks, and compliance contracts.
Microsoft Learn MCP	GitHub		mcp, docs, grounding	MCP server and CLI for grounding agents with Microsoft documentation sources.
IBM MCP	GitHub		mcp, clients, tooling	IBM collection of MCP servers, clients, and developer tooling.
AGENT.md	GitHub		standard, agent-file, interoperability	Standardized machine-readable file format for agentic coding tools.

Evaluation Harnesses & Benchmarks

Project	Link	Stars	Tags	Summary
Promptfoo	GitHub		eval, red-team, ci	Config-driven prompt/agent/RAG testing, comparison, and red-team evaluation tool.
DeepEval	GitHub		evaluation, framework, testing	LLM evaluation framework supporting agent and workflow quality testing.
RAGAS	GitHub		rag, metrics, evaluation	Open evaluation toolkit for LLM and RAG quality metrics.
lm-evaluation-harness	GitHub		benchmark, harness, llm	Popular benchmark harness for consistent LLM evaluation across tasks.
Agent Reinforcement Trainer	GitHub		rl, training, evaluation	Agent reinforcement-training harness for multi-step agents with GRPO, trajectory capture, reward assignment, training loops, and LangGraph/MCP examples.
SWE-bench	GitHub		benchmark, swe, evaluation	Standard benchmark for evaluating issue-fixing software engineering agents.
Harbor	GitHub		evaluation, harness, rl-env	Framework for running agent evaluations and constructing RL-style environments.
LangWatch	GitHub		simulation, evaluation, testing	End-to-end platform for agent simulations, evaluation loops, and production testing.
verifiers	GitHub		verifier, rl, evaluation	Library for RL environments and verifier-based evaluation loops.
AgentBench	GitHub		benchmark, cross-domain, agent	Cross-environment benchmark for evaluating LLM agents as tool-using systems.
EvalScope	GitHub		benchmark, framework, llm	Customizable framework for large-model benchmarking and performance evaluation.
TEAQL Agent Kit	GitHub		coding-agent, evaluation, auditability	Controlled evaluation environment for coding agents on auditable business software tasks with API adherence, framework discipline, self-repair, and human-gate metrics.
tau2-bench	GitHub		tool-use, interaction, benchmark	Tool-agent-user interaction benchmark emphasizing multi-step execution quality.
WebArena	GitHub		web-agent, benchmark, environment	Self-hostable web environment and evaluation harness for autonomous web agents with reproducible end-to-end tasks.
Meta-Harness	GitHub		harness-search, optimization, terminal-bench	Framework for automated search over task-specific model harnesses, with reference experiments for memory systems and terminal-agent scaffolds.
NeMo Gym	GitHub		rl-env, training, evaluation	Toolkit for building RL environments suitable for LLM/agent training and eval.
ClawBench	GitHub		browser-agent, benchmark, recording	Browser-agent benchmark with live-site tasks, isolated containers, five-layer recording, and agentic scoring.
TheAgentCompany	GitHub		benchmark, workplace, multi-step	Agent benchmark with simulated software-company tasks for evaluating multi-step workplace autonomy.
Claw-Eval	GitHub		benchmark, trajectory, safety	Evaluation harness and benchmark for autonomous agents with human-verified tasks, trajectory auditing, and completion, safety, and robustness rubrics.
Terminal-Bench	GitHub		terminal, benchmark, long-horizon	Terminal-native benchmark suite for long-horizon, verification-heavy agent tasks.
Inspect Evals	GitHub		inspect, eval-suite, reproducibility	Evaluation suite collection for Inspect AI workflows.
auto-harness	GitHub		optimization, regression, evals	Benchmark-gated optimization loop that mines failures, edits agent code, and guards against regressions overnight.
SWE-Bench Pro	GitHub		swe, benchmark, long-horizon	Long-horizon software-engineering benchmark with reproducible Docker-based evaluation for issue-driven coding agents.
WildClawBench	GitHub		benchmark, harness-comparison, multimodal	In-the-wild benchmark that compares multiple agent harnesses on end-to-end multimodal, coding, safety, and productivity tasks inside a live OpenClaw environment.
Agent Evaluation	GitHub		evaluation, testing, ci	AWS framework for testing virtual agents with evaluator-driven multi-turn conversations, hooks, and CI-friendly workflows.
WorkArena	GitHub		browser, benchmark, enterprise	Browser benchmark for practical enterprise-like knowledge work tasks.
OpenHands Benchmarks	GitHub		openhands, eval, harness	Evaluation harness and benchmark definitions for OpenHands systems.
WebArena-Verified	GitHub		web-agent, benchmark, deterministic	Verified web-agent benchmark with deterministic evaluators.
HarnessBench	GitHub		harness-comparison, browser-agent, benchmark	Benchmark for comparing agent harnesses on the same everyday web tasks with fixed models and per-harness containers.

Observability & Reliability Operations

Project	Link	Stars	Tags	Summary
Langfuse	GitHub		llmops, tracing, metrics	Open-source LLM engineering platform for traces, metrics, prompts, and evals.
MLflow	GitHub		platform, monitoring, evaluation	Broad AI engineering platform with monitoring and evaluation support for agents.
Opik	GitHub		monitoring, eval, tracing	End-to-end debug/eval/monitoring stack for LLM apps and agent workflows.
RagaAI Catalyst	GitHub		agentops, analytics, monitoring	Agent observability and monitoring framework with timeline and graph analytics.
TensorZero	GitHub		llmops, gateway, optimization	Open LLMOps stack unifying gateway, observability, evaluation, and optimization.
Arize Phoenix	GitHub		observability, tracing, evaluation	Open platform for AI observability, tracing, and evaluation analytics.
OpenLLMetry	GitHub		opentelemetry, instrumentation, tracing	OpenTelemetry-based instrumentation for GenAI and LLM applications.
Helicone	GitHub		monitoring, traffic, production	Lightweight platform for monitoring and evaluating LLM traffic in production.
AgentOps SDK	GitHub		agentops, monitoring, cost	Monitoring and benchmarking SDK for agent workflows with cost and trace tracking.
Coze Loop	GitHub		evaluation, tracing, monitoring	Full-lifecycle agent optimization platform combining prompt development, automated evaluation, experiment management, trace collection, execution inspection, and production monitoring.
Agenta	GitHub		llmops, evaluation, observability	Open-source LLMOps platform combining prompt management, evaluation, human and automated feedback, and tracing for production LLM applications.
Latitude	GitHub		platform, eval, observability	Open-source agent engineering platform with eval and observability capabilities.
TruLens	GitHub		evaluation, tracing, agentops	Evaluation and tracking platform for LLM apps and AI agents with traces, tool-call capture, and agentic evaluators.
Laminar	GitHub		observability, tracing, evals	Agent-focused observability stack with tracing, evaluation runs, monitoring, and dashboards.
Desloppify	GitHub		quality-gates, codebase-health, ci	Agent-facing codebase quality harness with scans, scoring, LLM review, prioritized fix loops, persistent state, and CI gates.
OpenLIT	GitHub		opentelemetry, observability, evaluations	OpenTelemetry-native AI engineering platform for LLM and coding-agent observability, evaluations, guardrails, prompt management, secrets, and dashboards.
claude-code-reverse	GitHub		trace, visualization, debugging	Tooling to visualize and inspect Claude Code LLM interaction traces.
Future AGI	GitHub		observability, evaluation, guardrails	Self-hostable platform that closes the loop across agent tracing, evaluation, simulation, guardrails, and gateway operations.
OpenInference	GitHub		spec, instrumentation, observability	Open instrumentation specification and tooling for AI observability.
Judgeval	GitHub		tracing, agent-judges, monitoring	Agent improvement SDK with OpenTelemetry tracing, agent judges, online monitoring, replay evaluations, CLI workflows, and MCP access to traces and behaviors.
Agentic Harness Engineering	GitHub		harness-optimization, trace-analysis, terminal-bench	Observability-driven system for evolving coding-agent harness components through evaluate, analyze, and improve loops.

Guardrails, Security & Governance

Project	Link	Stars	Tags	Summary
OmniRoute	GitHub		gateway, routing, guardrails	Local-first AI gateway for coding agents with quota-aware routing, provider fallback, credential pools, circuit breakers, usage controls, compression, MCP/A2A interfaces, and guardrails.
LiteLLM	GitHub		gateway, proxy, guardrails	Unified LLM gateway/proxy with cost tracking, load balancing, and guardrails.
Kong	GitHub		gateway, policy, infra	API and AI gateway infrastructure useful for policy enforcement in agent systems.
Parlant	GitHub		interaction-control, guardrails, customer-agents	Interaction-control harness for customer-facing agents focused on consistent, predictable, and governed LLM behavior.
SkillSpector	GitHub		skill-security, static-analysis, risk-scoring	Security scanner for AI agent skills with static and optional LLM analysis, vulnerability patterns, risk scoring, and CI-friendly report formats.
Portkey Gateway	GitHub		gateway, guardrails, routing	AI gateway with routing and guardrails for multi-model production traffic.
CAI (Cybersecurity AI)	GitHub		security, governance, framework	Security-focused agent framework for offensive/defensive AI workflows.
Higress	GitHub		ai-gateway, mcp, governance	CNCF AI-native gateway for unified LLM API and MCP API management, including hosted remote MCP servers and gateway controls for agent tool access.
Plano	GitHub		proxy, safety, data-plane	AI-native proxy and data plane with orchestration, safety, and observability.
OpenAI Realtime Agents	GitHub		realtime, orchestration, control	Advanced agentic realtime patterns with structured control and interaction loops.
OpenAI CS Agents Demo	GitHub		demo, handoffs, governance	Customer-service multi-agent demo highlighting handoffs and guardrail-like control points.
Agent Governance Toolkit	GitHub		governance, policy, sandboxing	Runtime governance toolkit that deterministically enforces agent policy, identity, sandboxing, and audit controls before actions execute.
AgentGateway	GitHub		gateway, mcp, proxy	Agentic proxy gateway for AI agents and MCP server ecosystems.
ContextForge	GitHub		gateway, governance, observability	Registry and proxy layer that unifies MCP, A2A, and REST/gRPC endpoints with centralized governance and observability.
Archestra	GitHub		enterprise, guardrails, governance	Enterprise AI platform with guardrails, MCP registry, and orchestration services.
nono	GitHub		policy, sandbox, audit	Capability-based, policy-governed runtime that narrows agent access to explicit filesystem, network, credential, operation, sandbox, and audit capabilities.
Tracecat	GitHub		security, automation, policy	AI automation platform for security teams with policy and workflow controls.
Snyk Agent Scan	GitHub		security-scanner, mcp, skills	Security scanner that inventories local agent harnesses, MCP servers, and skills, then checks for prompt injection, tool poisoning, malware payloads, and sensitive-data risks.
Agent Vault	GitHub		credentials, egress-policy, proxy	Credential proxy and vault that brokers agent API access without exposing real secrets, with egress filtering and request logging.
ClawManager	GitHub		control-plane, governance, runtimes	Kubernetes-native control plane for governing agent runtimes, AI gateway access, and reusable skills across multiple agent backends.
Haft	GitHub		governance, decisions, mcp	Decision-governance harness that records falsifiable contracts, evidence, and commissions before agents execute.
ClawKeeper	GitHub		safety, runtime-monitoring, governance	Safety framework for autonomous agents combining skill-based policies, runtime plugins, and watcher-based governance.
DefenseClaw	GitHub		governance, runtime-guardrails, audit	Security governance stack for OpenClaw and agentic runtimes, combining admission control, runtime inspection, CodeGuard checks, sandbox policy, audit logs, and observability export.
Cordum	GitHub		governance, approvals, audit	Agent control plane for pre-execution policies, approval gates, safety-kernel verdicts, live monitoring, audit trails, and Claude Code compliance firewall hooks.
Sponsio	GitHub		contracts, runtime-safety, guardrails	Runtime enforcement layer that checks every agent action against deterministic contracts before execution.
DashClaw	GitHub		approvals, policy, audit	Governance layer that intercepts risky agent actions, enforces policy, routes approvals, and records audit-ready decision trails.
Tandem	GitHub		runtime-authority, approvals, audit	Governed runtime authority layer for agents with scoped execution, tool visibility, permissioned memory, approval gates, and audit trails.

Reference Harness Implementations

Project	Link	Stars	Tags	Summary
OpenClaw	GitHub		gateway, channels, sandboxing	Local-first personal assistant harness with a gateway control plane for sessions, channels, tools, events, skills, and sandboxed non-main agents.
Hermes Agent	GitHub		memory, skills, subagents	Self-improving agent runtime with memory, skill creation, subagents, scheduled automations, and pluggable terminal backends.
DeepSeek Harness	GitHub		plugin-architecture, session-log, sandboxing	DeepSeek's official plugin-first agent harness with replaceable agent loops, model adapters, tool registries, durable session logs, sandbox and approval policies, and web or headless profiles.
OpenCode	GitHub		terminal, coding-agent, subagents	Open-source coding agent with built-in plan/build roles, subagents, LSP support, and a client-server runtime.
Claw Code	GitHub		rust, cli, sessions	Public Rust implementation of the claw CLI agent harness with auth, sessions, parity checks, container workflows, and terminal execution guidance.
Claude Code	GitHub		terminal, coding-agent, git-workflows	Official terminal coding agent that understands codebases and executes editing, debugging, and Git workflows through natural language.
Codex CLI	GitHub		terminal, coding-agent, local-execution	Terminal-native coding agent that runs locally and exposes practical agent workflows for software tasks.
Browser Use	GitHub		browser-agent, automation, benchmarks	Browser-agent framework that exposes websites to LLMs through browser state, tools, cloud browsers, and benchmarked task runs.
pi	GitHub		coding-agent, runtime, monorepo	Agent harness monorepo combining a coding-agent CLI, shared runtime, and multi-provider LLM stack.
Gemini CLI	GitHub		terminal, coding-agent, mcp	Open-source terminal agent with built-in tools, MCP support, checkpointing, and sandboxing controls.
OpenDesign	GitHub		runtime-adapters, skills, session-resume	Local-first design-agent workspace with declarative CLI runtime adapters, structured event streaming, session resume, cancellation, composable skills, and sandboxed artifact previews.
OpenHands	GitHub		coding-agent, software-engineering, repo	Open-source AI software engineer focused on repo-level coding task execution.
LobeHub	GitHub		operator, multi-agent, scheduling	Chief-agent-operator platform for scheduling, running, and reporting on multi-agent workstreams.
Paperclip	GitHub		managed-agents, control-plane, governance	Managed-agent control plane with org charts, ticketing, budgets, heartbeats, and audit trails for coordinating agent teams.
learn-claude-code	GitHub		tutorial, harness, claude-code	Hands-on harness tutorial for building Claude Code-like systems from scratch.
Cline	GitHub		coding-agent, mcp, checkpoints	Open-source coding agent spanning IDE, terminal, SDK, and kanban surfaces with shared approvals, MCP, checkpoints, and agent teams.
Open Interpreter	GitHub		terminal, coding-agent, harness-emulation	Terminal coding agent with selectable harness emulation, native sandboxing, provider switching, skills, hooks, permissions, MCP, and AGENTS.md support.
OpenManus	GitHub		general-agent, autonomy, workflows	Open foundation for broad autonomous agent workflows with coding-heavy use cases.
goose	GitHub		desktop, cli, mcp	Linux Foundation AAIF open-source AI agent spanning desktop, CLI, and embeddable API with provider adapters, ACP access, and MCP extensions.
Multica	GitHub		managed-agents, coding-agent, runtimes	Managed-agents platform that assigns issues to coding agents, routes execution through runtimes, and compounds reusable skills.
CLI-Anything	GitHub		cli, tool-use, automation	CLI agent system that unifies command-line tool usage in agent loops.
aider	GitHub		terminal, repo-map, testing	Terminal coding assistant with repo mapping, git-aware edits, and built-in lint/test feedback loops.
nanobot	GitHub		runtime, memory, multi-channel	Ultra-lightweight agent runtime with WebUI, chat channels, tools, memory, MCP, model routing, deployment, and long-running goal support.
CowAgent	GitHub		reference, skills, multi-channel	Reference agent harness implementation with planning, memory, knowledge, skills, tools, MCP integration, schedulers, browser automation, and multi-channel delivery.
CodeWhale	GitHub		coding-agent, approval-gates, runtime-policy	Local-first coding-agent harness with explicit authority ordering, evidence loops, approval-gated tools, side-git snapshots, rollback, subagents, and runtime APIs.
OpenHuman	GitHub		durable-execution, memory, governance	Local-first agent harness combining persistent memory, checkpointed graph orchestration, approval-gated workflows, failure circuit breakers, and replayable event journals.
Claude Code Plugins: Orchestration and Automation	GitHub		claude-code, plugins, orchestration	Production-ready Claude Code plugin marketplace bundling agents, skills, tools, and multi-agent workflow orchestrators.
oh-my-claudecode	GitHub		claude-code, multi-agent, worktrees	Team-first orchestration layer for Claude Code with staged multi-agent execution, worktree-aware setup, and persistent session artifacts.
Agent TARS	GitHub		computer-use, browser-agent, mcp	Multimodal computer and browser agent stack with CLI/Web UI, hybrid GUI/DOM browser control, MCP tools, event streams, and sandbox support.
OpenCodeReview	GitHub		code-review, deterministic-pipeline, verification	Production-tested code-review agent harness combining deterministic file coverage and rule selection with isolated subagents, tool-driven context retrieval, comment verification, sessions, CI, and tracing.
DeepSeek-Reasonix	GitHub		deepseek, prefix-cache, coding-agent	DeepSeek-native coding-agent harness optimized for prefix-cache stability, with separate planner and executor sessions, cache-aware compaction, MCP plugins, permissions, workspace sandboxing, and per-turn checkpoints.
oh-my-codex	GitHub		codex, workflow, worktrees	Workflow layer for OpenAI Codex CLI with stronger session startup, standard planning-to-completion flows, durable state, skills, hooks, and worktree launches.
ZeroClaw	GitHub		runtime, approval-gates, sandboxing	Single-binary agent runtime with providers, channels, tools, memory, SOPs, approval gates, sandboxing, ACP, and tool receipts.
oh-my-pi	GitHub		terminal, lsp, subagents	Terminal AI coding agent with edit safety, LSP integration, and subagent support.
NanoClaw	GitHub		containers, claude-sdk, scheduling	Container-isolated Claude agent harness with channel routing, scheduled jobs, per-group memory, and small-codebase customization.
Crush	GitHub		terminal, coding-agent, mcp	Terminal coding agent that wires project tools, code, workflows, sessions, LSP context, model switching, and MCP extensions into an LLM runtime.
Vibe Kanban	GitHub		coding-agent, workspaces, review	Kanban control plane for planning, running, reviewing, and merging work from coding agents in isolated workspaces.
Qwen Code	GitHub		terminal, coding-agent, cli	Terminal-native open-source coding agent tuned for practical dev loops.
Kilo Code	GitHub		coding-agent, ide, autonomous	Open-source coding agent spanning VS Code, JetBrains, CLI, cloud agents, reviews, custom modes, browser and terminal control, MCP marketplace, and autonomous CI runs.
cmux	GitHub		macos, workspace, browser	Native macOS terminal and browser workspace for AI coding agents with notifications, split panes, and scriptable control.
Grok Build	GitHub		coding-agent, tui, acp	Official Rust coding-agent harness and TUI with interactive, headless, and ACP modes plus MCP, skills, plugins, hooks, sandboxing, subagents, and long-running task support.
Compound Engineering	GitHub		plugins, worktrees, review	Cross-agent engineering plugin that codifies brainstorming, planning, worktree execution, review, and knowledge compounding loops.
SuperClaude Framework	GitHub		config, personas, workflow	Configuration framework adding commands, personas, and method templates to coding agents.
Prime Agent	GitHub		long-running, rlm, quality-gates	Long-running coding and research harness with a persistent Python REPL, recursive subagents, resumable daemon sessions, durable harness state, and budgeted autonomous quality gates.
SWE-agent	GitHub		swe, issue-fixing, tooling	Research-grade coding agent that resolves GitHub issues with explicit tooling loops.
jcode	GitHub		coding-agent, terminal, rust	Rust coding-agent harness built for multi-session workflows, customization, memory, and terminal performance.
Devika	GitHub		assistant, planning, coding	Open-source coding assistant system for planning and implementing development tasks.
OpenFang	GitHub		agent-os, guardrails, rust	Rust agent operating system with autonomous capability packages, manifests, guardrails, tools, memory, sandboxing, audit trails, and channel adapters.
Paseo	GitHub		coding-agent, daemon, multi-device	Multi-device coding-agent daemon and client stack for orchestrating local agents, parallel runs, and cross-provider workflows.
DeepCode	GitHub		coding-agent, verification-loop, durable-sessions	Coding-agent harness with durable sessions, goal-driven loops, evidence-based completion, permission and sandbox controls, reusable skills, parallel agents, context compaction, and headless automation.
OpenHarness	GitHub		tool-use, memory, multi-agent	Open agent harness implementation covering tool use, skills, memory, permissions, and multi-agent coordination.
Learn Harness Engineering	GitHub		tutorial, verification, workflows	Project-based harness engineering course with runnable templates and staged implementations for instructions, state, verification, observability, automated loops, graph workflows, rollback, and human approval.
Eigent	GitHub		desktop, cowork, productivity	Open-source desktop cowork agent for autonomous task execution and productivity.
Aperant	GitHub		coding-agent, parallel, memory	Autonomous multi-agent coding framework with parallel execution, isolated workspaces, QA loops, and persistent memory.
Superset	GitHub		worktrees, desktop, parallel	Worktree-based desktop orchestrator for running and reviewing parallel CLI coding agents from one workspace.
IronClaw	GitHub		security, wasm, routines	Security-first personal agent harness with WASM sandboxing, routines, tool plugins, and persistent memory.
Agent S	GitHub		computer-use, gui-agent, evaluation	Open-source computer-use agent framework with grounding models, reflection, local code execution option, and OSWorld-style evaluation support.
Agent Orchestrator	GitHub		worktrees, parallel, dashboard	Worktree-based orchestration layer for parallel coding agents with autonomous CI and review feedback handling.
holaOS	GitHub		long-horizon, desktop, durable-state	Desktop-first long-horizon agent environment with runtime, memory, tools, apps, and durable state.
GitHub Copilot CLI	GitHub		terminal, coding-agent, mcp	Official terminal coding agent built on GitHub's Copilot harness with MCP extensibility, approval controls, and GitHub-native context.
ML Intern	GitHub		ml-agent, sandbox-tools, traces	Hugging Face ML engineering agent with local and sandbox tool runtimes, private Space sandboxes, trace logging, and CLI execution.
Open SWE	GitHub		async, coding-agent, swe	Asynchronous open-source coding agent focused on software issue workflows.
GitHub Copilot SDK	GitHub		sdk, agent-runtime, json-rpc	Official multi-language SDK for embedding the Copilot CLI agent runtime with sessions, planning, tools, file edits, permissions, custom agents, skills, MCP, hooks, and JSON-RPC lifecycle management.
Harness	GitHub		claude-code, meta-factory, agent-teams	Claude Code meta-factory that generates domain-specific agent teams, skills, orchestration patterns, and validation steps from a project description.
OSAURUS	GitHub		macos, local-first, memory	Native macOS harness for autonomous coding agents with persistent memory.
mini-swe-agent	GitHub		minimal, swe, coding-agent	Minimal coding agent implementation with strong benchmark competitiveness.
Munder Difflin	GitHub		multi-agent, desktop, memory	Desktop multi-agent harness that wraps terminal-agent CLIs with hive mailboxes, shared memory, an orchestrator, approvals, worktrees, and telemetry.
Yuxi	GitHub		multi-tenant, knowledge-graph, mcp	Multi-tenant agent harness platform combining RAG, knowledge graphs, LangGraph orchestration, skills, MCP, subagents, and sandbox tools.
Webwright	GitHub		browser-agent, code-as-action, playwright	Minimal browser-agent harness that lets coding models solve web tasks by writing rerunnable Playwright scripts in a workspace.
Google Agents CLI	GitHub		google-cloud, lifecycle, skills	Google Cloud CLI and skill bundle that gives coding agents scaffold, evaluation, deployment, publishing, and observability workflows.
AgentTeams	GitHub		multi-agent, human-in-the-loop, shared-state	Collaborative multi-agent OS with manager-worker coordination, shared state, human-in-the-loop oversight, pluggable runtimes, and Kubernetes deployment through Matrix rooms.
1Code	GitHub		coding-agent, orchestration, worktrees	Desktop-first coding-agent orchestrator with worktree isolation, background sandboxes, MCP tooling, and automation triggers.
AI-DLC Workflows	GitHub		workflow-rules, quality-gates, steering	Official AWS workflow ruleset that steers coding agents through adaptive phases, quality gates, and IDE-specific context files.
gptme	GitHub		terminal, tools, mcp	Terminal-native personal agent with local tools, shell and web access, provider-agnostic models, plugins, skills, MCP, guardrails, and autonomous loops.
TinyAGI	GitHub		team-orchestration, autonomous, workflows	Team-style agent orchestrator for one-person-company style autonomous workflows.
Open Claude Cowork	GitHub		desktop, ui, orchestration	Desktop coding cowork assistant that turns agent orchestration into GUI workflows.
Amazon Bedrock AgentCore Samples	GitHub		aws, runtime, operations	Official sample suite for deploying and operating agents with runtime, gateway, memory, observability, evaluation, and policy layers.
Maestro	GitHub		desktop, worktrees, orchestration	Desktop command center for parallel coding agents with worktree isolation, queued tasks, auto-run playbooks, and reusable sessions.
Claude Code Harness	GitHub		claude-code, workflow, review-loop	Claude Code development harness that turns agent work into a repeatable spec, plan, work, review, and release loop.
Kimchi	GitHub		terminal, multi-model, project-state	Terminal coding-agent harness with multi-model orchestration roles, phase tracking, persistent project state, and subagent delegation.
Open Cowork	GitHub		desktop, sandbox, mcp	Desktop agent app with VM-backed sandboxing, MCP connectors, GUI control, and built-in skill workflows.
Pilot Shell	GitHub		codex, claude-code, quality-gates	Claude Code and Codex workflow harness with spec-dr