Sandbox
138 repos for harness · Any agentClear
owainlewis/
machinist

Open source software factory infrastructure for advanced AI coding workflows

398
earthtojake/
step.parts

12,000+ open source STEP parts for your next CAD project

348
hrygo/
hotplex
hrygo/hotplexConnectors

HotPlex — Unified access layer for AI Coding Agent.

49

Your Intelligence, Orchestrated. Every builder. Every team. Every agent. For Everyone.

348
lmwilki/
civ6-mcp

An MCP server that lets LLM agents play Civilization VI.

172
Ontos-AI/
knowhere

Knowhere extracts, parses, and outputs structured chunks ready for AI Agents and RAG.

3.1k

Containment for AI agents - user isolation, sandboxed execution, network controls, backup/rollback. TLA+ verified.

173

Co-creation infrastructure for humans and code agents — visual environment, skills, continuous learning, and distribution.

160
YPares/
rigup.nix
YPares/rigup.nixFrameworks & SDKs

AI agents and Nix: parametrable skills/instructions and tools, packaged together in a reproducible and modular fashion

90
sentrux/
sentrux

Real-time architectural sensor that helps AI agents close the feedback loop, enabling recursive self-improvement of code quality. Pure Rust.

3.2k
mathomhaus/
guild

Shared context, memory, and task coordination across AI coding agents. Single Go binary, local SQLite, hybrid keyword and semantic search.

305
skillberry-ai/
cap-evolve

Optimize any AI agent’s skills, tools/MCP, and prompts against your own evals.

56

Agenta is a workspace where you and your team build agents and automations.

4.7k
SponsioLabs/SponsioFrameworks & SDKs

Deterministic safety solutions for probabilistic AI agents

440

BootAgent is a local management tool of AI agents. It turns a fresh machine into a usable, repeatable setup without asking you to edit several tool-specific config files by hand.

98
EverMind-AI/EverOSFrameworks & SDKs

One portable memory layer for every AI agent: local-first, Markdown-native, user-owned, and self-evolving across apps, tools, and workflows.

13k
shinpr/
agentic-code

Agentic coding framework powered by AGENTS.md: systematic, test-first workflows with quality gates for Cursor, Codex, Gemini CLI, and AI coding agents.

49

A portable memory protocol for AI agents — load it as standing rules; a curation discipline + reference spec + optional cap hook.

189
OpenLAIR/
dr-claw

A Super AI Lab with massive AI Doctors as Assistants. Best IDE for Research via AI Power.

1.1k
ratel-ai/ratelFrameworks & SDKs

Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.

434