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Agentic-System-Lab / harness-relay

A local group chat for the real Claude Code, Codex, Grok and Cursor CLIs, and five open-source coding agents (OpenCode, Goose, Cline, OpenHands and Pi) on the model backends you choose: give each a role, choose how they take turns, and they work on your code, or any question, and answer each other.

Why this job: topics: coding-agents, agentic-coding, claude-code, codex, cursor, opencode, coding agents

Harness Relay demo: you create a group and ask a question, the lead agent sorts the chat into the group and designs a team for the question, you confirm it, Claude Code, Codex and Grok read the code and answer, a follow-up question gets a team of its own, you open the code they discussed in the file browser, and a search finds the chat again

What it does

  • Ten coding agents in one chat. runs the claude, codex, grok, cursor-agent and agy CLIs you already have, with their own tools, sessions and logins, and the open-source opencode, goose, cline, openhands and pi CLIs. Mix them in one team.
  • Your own models. the open-source agents run on the model backends you set up in Settings: API keys for OpenAI, Anthropic and xAI, or your own OpenAI-compatible endpoint (vLLM, Ollama, LM Studio, llama.cpp). A member's model is backend/mode
  • Design teams as templates. roles, model, reasoning effort, turn order; five built-in templates (coding and general questions) to copy, and your own to add and change on the New chat page. The current team can be adjusted mid-chat, by hand
  • Attach files. paste screenshots, drop files or use 📎; every agent gets the files, and images are shown directly to the CLIs that take them.
  • Voice input (optional). press 🎙 in the message box and speak; whisper.cpp turns it into text on your computer, and recordings never leave it. Nothing is installed until you want it: the first press explains what gets downloaded, then insta

Get started

No single install command. Read the steps in the README (opens in new tab)

Maintenance
Active
Last commit today
Stars
24
On GitHub
Licence
Apache-2.0
Allows business use
Downloads for
3 systems
Mac, Windows, Linux
Latest tag
2026-11-12.1
Released today
Built with
TypeScript
94% of the code

Is it looked after?

Contributors
2
Last 90 days
Issues
100% closed
0 still open
Pull requests
24 merged
1 waiting
Releases
9
9 in the last year

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More: download files, languages, topics and project record

Download files, 2026-11-12.1

  • Mac1 file, 1 downloads
  • Windows2 files, 5 downloads
  • Linux2 files, 3 downloads

All files on GitHub (opens in new tab)

Languages

  • TypeScript 94%
  • CSS 3%
  • HTML 2%
  • JavaScript 2%

Topics

  • agent-client-protocol
  • agent-orchestration
  • ai-agents
  • claude-code
  • codex
  • coding-agents
  • developer-tools
  • git-worktree
  • grok
  • local-first
  • multi-agent
  • agentic-coding

Project record

  • JobCoding agents
  • StatusNew to our list
  • Commits166
  • Forks4
  • Watching0
  • CreatedNov 7, 2026
  • First seen by usNov 8, 2026
  • CheckedNov 12, 2026

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