Sandbox
13 repos for app · Harnesses · TestingClear
shamspias/
reins

A lightweight agent harness you bolt onto your app so an LLM can operate it — safely, and cheaply.

92
gotalab/
cc-sdd

Turn approved specs into long-running autonomous implementation. A minimal, adaptable SDD harness with Agent Skills for Claude Code, Codex, Cursor, Copilot, Windsurf, OpenCode, Gemini CLI, and Antigravity.

3.7k
spring-ai-community/
spring-ai-playground

Safe local execution layer for AI agent tools. Build, validate, and publish MCP tools with a no-pass-no-run workflow — cross-platform desktop app powered by Spring AI.

137

MCP Toolkit for Flutter AI Agent Driven Development (MCP/CLI + custom client side tools) - via closed feedback loop (visual & semantic snapshot) and high client side customization adaptable for any Flutter app. Nowadays it is often called as agentic harness.

375
azalio/
map-framework

Plan-then-build AI coding for Claude Code & Codex CLI — you approve the plan before the model writes a line of code. SPEC → PLAN → TEST → CODE → REVIEW → LEARN

156
wasintoh/
toh-framework

Type one sentence, approve once, walk away — Toh Framework installs an AI build department (14 commands, 8 agents, 23 skills) into your project and keeps building, testing and fixing until it is verified done. Works in Claude Code, Cursor, Antigravity, Codex and ZCode.

96
coleam00/
dark-factory-experiment

A repository that ships its own code. AI workflows triage issues, implement them, review, and auto-merge with no human reading the diff. Runs on Archon. The app it maintains is a cited RAG chat over YouTube transcripts, live at chat.dynamous.ai.

151

The multi-agent harness that checks the work: verifies agent runs by artifacts (stop-hook gates, independent judges, append-only event logs) across Claude Code, Codex, Cursor, and 10+ runtimes.

1.3k
AMAP-ML/
LongHorizon-Harness

The long-horizon computer-use harness. Run AI agents across desktop apps and the CLI for extended periods while preserving task state and making reliable progress on complex workflows. Features fresh-context execution, durable verified state, independent auditing, recoverable progress, and native Claude Code / Codex / OpenClaw integration.

1.5k
owainlewis/
machinist

Open source software factory infrastructure for advanced AI coding workflows

398
chaitanyagiri/
munder-difflin

A local multi-agent harness that works with your existing Claude Code, Codex subscriptions, allows you to run an office of agents

6.8k
thClaws/
thClaws

Open-source AI agent harness in native Rust — GUI, CLI, headless, and webapp from one binary. Multi-provider, MCP, skills, plugins, agent teams.

1.2k
KhazP/
vibe-coding-prompt-template

Templates and workflow for generating PRDs, Tech Designs, and MVP and more using LLMs for AI IDEs

3.1k