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Talk to one agent. Ship with a crew.
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Jev directory
CommunityJev Agents & MCP
Firstmate
firstmate is an MIT-licensed agent distro that turns one coding agent into a first mate supervising a crew of autonomous agents in git worktrees, handing back finished PRs, approved merges, or investigation reports.
- Stars
- 8k
- Language
- Shell
- License
- MIT
- Reading time
- 2 min
- Published by
- Community
- Last verified
- Oct 2026
Works forJev for Code
Used inJev for Software & DevTools
Highlights
- One first mate dispatches crewmates into tmux windows or Herdr tabs, each in its own treehouse git worktree.
- Project modes: no-mistakes, direct-PR, or local-only, with optional +yolo merge autonomy and branch prefix overrides.
- Verified harnesses: Claude Code, Grok, Pi, Oh My Pi, Codex, OpenCode, and Cursor Agent CLI; tmux is the reference backend.
- The cloned repo is the distro: AGENTS.md, bundled firstmate skills, and helper scripts; there is no app to install.
- Optional secondmates run from isolated firstmate homes on this machine or an SSH-reachable host.
Watch out
Copy reviewed against the truncated README on 2026-10-15. The quick start lists requirements and recommended harnesses but its install commands are cut off in the digest, and the feature list is the project's own description; no benchmarks or cost figures are given.
Questions about this entry
Short answers drawn from the linked project or page.
An agent distro: a portable directory of instructions, skills, tooling, policies, and state conventions that turns a general-purpose coding agent into a first mate that runs a crew of autonomous agents.
The README is explicit: firstmate is not a model, not a harness, not a skill, not an MCP server, and not a CLI. There is no app to install; the cloned repo itself is the distro, launched inside a supported agent harness.
A verified primary agent harness such as Claude Code, Grok, Pi, Codex, OpenCode, or Cursor Agent CLI, Git plus an authenticated GitHub CLI, and the CLI for your chosen runtime backend; tmux is the reference default and the first mate offers to install missing tools.
Each task runs in a clean treehouse git worktree, or an Orca-managed worktree when backend=orca, so parallel work on one repo does not collide. Crewmates work in separate tmux windows or Herdr tabs, with experimental Zellij, cmux, and Orca terminals also listed.
Ship tasks deliver authorized changes under a project's merge mode, such as no-mistakes, direct-PR, or local-only with optional +yolo autonomy. Scout tasks leave standalone investigation reports when the intake contract calls for separate research.
No. The digest's README describes agent supervision, harnesses, and workflows without mentioning Jev or TypeSafe, and the project entered this catalog through the logicrw community list.
The repository is kunchenguid/firstmate, MIT-licensed, and the README links @kunchenguid on X plus a Discord. No pricing appears in the digest; costs would come from whichever harness and model providers you run, and an optional Relay answers public mentions.
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