{"repo":"mastersof-ai/harness","free":true,"listed":false,"github":"https://github.com/mastersof-ai/harness","clone":"git clone https://github.com/mastersof-ai/harness.git","description":"Agent runtime with full system prompt control. Define agents in markdown, run them in a terminal TUI or multi-user web UI. Powered by the Claude Agent SDK.","language":"TypeScript","stars":40,"topics":["a2a-protocol","agent-runtime","agent-sdk","ai-agent","claude","llm","mcp","multi-agent","tui","typescript"],"license":"MIT","category":"ai-agents","readme_excerpt":"@mastersof-ai/harness An agent runtime where you control the entire system prompt. Write a markdown file, get an agent -- no hidden framework instructions, no magic behavior injection, no black box. Use the terminal TUI for local development. Switch to --serve for a web UI that your team accesses from a browser. Both run the same agent runtime, tools, and configuration underneath. Why This Exists Most agent frameworks inject their own system prompt that you can't see or override. Your carefully crafted instructions compete with hidden framework behavior. You're debugging a black box. The harness takes a different approach: - Your IDENTITY.md IS the system prompt. No hidden framework instructions. The harness adds only transparent operational context (date/time, workspace path, memory) -- no behavioral injection. - No separate billing. Uses your existing Claude Code subscription or API key. Powered by the Claude Agent SDK directly. - Agents are just markdown. No code to define an agent. Write a file, run a command. Optional YAML frontmatter adds metadata when you need it. - Two interfaces, one runtime. Terminal TUI for solo iteration. Web UI for team/client access. Same agent behavior in both. - Production-ready. Token auth, per-user isolation, rate limiting, cost caps, LGPD-compliant privacy, optional bubblewrap sandboxing. Install Auth prerequisite: The harness authenticates via Claude Code credentials or an API key. Linux / Ubuntu from scratch Quick Start Start the default ","default_branch":null,"files":null,"tree":[],"storefront":"/r/mastersof-ai","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/mastersof-ai/harness/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}