$ find your agent harness<br>A curated, verified, cross-vendor directory of AI agent harnesses — the runtime scaffolding that turns a model into an agent.<br>◆ 75 harnesses profiled · 9-axis capability schema · last verified 2026-07-08

grepCategory<br>OSS coding harnesses (14)<br>Vendor CLI agents (14)<br>General / computer-use (13)<br>Runtimes & SDKs (13)<br>Cloud / background (11)<br>IDE & desktop (10)

Form factor<br>cli (43)<br>cloud-service (35)<br>web-app (28)<br>sdk (24)<br>chat-integration (17)<br>tui (17)<br>desktop-app (15)<br>ide-extension (15)<br>ci-step (13)<br>ide (10)

Autonomy<br>semi-autonomous (66)<br>supervised (58)<br>autonomous-local (48)<br>background-cloud (42)

Sandboxing<br>optional (27)<br>none (13)<br>cloud-remote (9)<br>vm (7)<br>container (4)<br>os-sandbox (1)

License<br>open-source (42)<br>proprietary (33)

Pricing<br>freemium (27)<br>byok (22)<br>subscription (17)<br>usage-based (5)<br>free (1)<br>enterprise (1)

Capabilities<br>MCP client<br>Agent Skills support<br>Local models

75 of 75 harnesses · sorted by stars<br>OpenClaw · OpenClaw community (created by Peter Steinberger)<br>★ 382,000 · high<br>MIT-licensed self-hosted personal AI assistant ('the lobster way') that exploded to ~382k GitHub stars in months: any model, 20+ messaging channels (WhatsApp/Telegram/Slack/iMessage...), SKILL.md skills via ClawHub, Docker-sandboxed sessions, cron jobs, voice, and a live Canvas.<br>General / computer-useopen-sourcebyok✓ mcp✓ skills✓ local models⛨ optional

Hermes Agent · Nous Research<br>★ 211,000 · high<br>Nous Research's MIT-licensed 'self-improving' server-resident agent (Feb 2026, ~211k stars): model-agnostic with persistent cross-session memory, autonomous skill creation compatible with the agentskills.io standard, DSPy/GEPA evolutionary self-optimization, and execution backends from local/Docker to Modal and Daytona.<br>General / computer-useopen-sourcebyok✓ mcp✓ skills✓ local models⛨ optional

Claw Code · Community (ultraworkers; initiated by Sigrid Jin)<br>★ 194,649 · low<br>The clean-room Rust/Python rewrite of Claude Code's harness architecture born hours after the March 31, 2026 source leak — reportedly the fastest-growing repo in GitHub history (~195k stars) with permission-gated tools, MCP, agent swarms, and container-first deployment — though the project is chaotic, largely agent-maintained, and its details vary across sources.<br>OSS coding harnessesopen-sourcebyok✓ mcp✓ local models⛨ optional

OpenCode · Anomaly (formerly SST)<br>★ 183,448 · high<br>The most-starred open-source coding agent of 2026 (~183k stars, MIT, TypeScript): a polished terminal TUI with 75+ providers, LSP feedback, Tab-switchable build/plan agents plus background subagents, SKILL.md support, and optional paid model access via OpenCode Go ($10/mo) and pay-as-you-go Zen gateway.<br>OSS coding harnessesopen-sourcefreemium✓ mcp✓ skills✓ local models

Claude Code (desktop app) · Anthropic<br>★ 136,750 · high<br>Anthropic's Claude-only agent harness in native desktop form, redesigned April 14, 2026 around a multi-session sidebar for parallel agents across repos, with integrated terminal/editor/diff viewer, cloud-hosted 'Routines' that run on Anthropic infrastructure while your machine is off, and the ecosystem that originated Agent Skills, subagents, hooks, plugins, and the headless Agent SDK (repo is issue tracker/docs; stars 136,750).<br>IDE & desktopproprietarysubscription✓ mcp✓ skills⛨ optional

Claude Code · Anthropic<br>★ 136,749 · high<br>Anthropic's terminal-native agentic coding tool and the category-defining harness, distinguished by its layered extensibility model (CLAUDE.md memory, Agent Skills, subagents, hooks, plugins, MCP) plus permission modes, checkpoints, and optional sandboxing, available from CLI/IDE/desktop/web with an Agent SDK for building on top.<br>Vendor CLI agentsproprietarysubscription✓ mcp✓ skills⛨ optional

Gemini CLI · Google<br>★ 105,834 · high<br>Google's fully open-source (Apache-2.0) terminal agent with a generous free tier, distinguished by built-in Google Search grounding, an extensions ecosystem bundling prompts/MCP servers/commands, GEMINI.md context files, checkpointing, and real-time voice mode.<br>Vendor CLI agentsopen-sourcefreemium✓ mcp⛨ optional

browser-use · Browser Use Inc. (YC-backed, SF)<br>★ 103,000 · high<br>MIT-licensed Python library (103k stars) that lets any LLM drive a real Chrome browser via DOM+vision instead of brittle selectors, now flanked by a desktop app and a usage-based cloud with stealth browsers, proxies, and a 24/7 'Browser Use Box' agent.<br>General / computer-useopen-sourcebyok✓ mcp✓ local models⛨ optional

Codex CLI · OpenAI<br>★ 96,138 · high<br>OpenAI's open-source (Apache-2.0) Rust-rewritten terminal coding agent, distinguished by kernel-level OS sandboxing (Apple Seatbelt on macOS, Landlock/seccomp on Linux), a 272K-1M token context with GPT-5.x Codex models, MCP support, and cloud handoff to Codex web tasks.<br>Vendor CLI agentsopen-sourcesubscription✓ mcp✓ local models⛨ os-sandbox

Zed (Agent Panel) · Zed Industries<br>★ 86,630 · high<br>High-performance Rust editor (GPL, hit 1.0 in 2026) whose Agent Panel offers a...