mars

A package manager for AI agent profiles and skills. Install agents and skills from git sources into Claude Code, Cursor, Codex, OpenCode — any tool that reads from a config directory.

Install

Method	Command
Cargo	`cargo install mars-agents`
pip / uv	`uv tool install mars-agents` or `pip install mars-agents`
npm	`npm install -g @meridian-flow/mars-agents`
Prebuilt binaries	GitHub Releases

Quick Start

mars init
mars add meridian-flow/meridian-dev-workflow
mars link .claude
mars link .codex

Your agents and skills are now installed and available in both Claude Code and Codex. Update them with mars upgrade, check for drift with mars doctor.

Adding Sources

# From GitHub
mars add meridian-flow/meridian-base
mars add acme/security-agents --only-agents

# From a local directory
mars add ../my-team-agents

# Pin a version
mars add meridian-flow/meridian-base@^1.0

Model Aliases

Packages can distribute model routing — short names that resolve to concrete models across harnesses:

mars models list
mars models resolve opus

# In mars.toml — override any alias
[models.opus]
harness = "claude"
provider = "Anthropic"
match = ["*opus*"]

How It Works

mars.toml + mars.lock (committed)
.mars-src/              ← your own agents/skills (committed, editable)
    ↓ mars sync
  .mars/                ← canonical store, gitignored (rebuilt from sources)
    ↓ copy to each target
  .agents/, .claude/, .cursor/ (your tools read from here)

Mars resolves the full dependency graph before touching any files. Writes are atomic. The lock file tracks what mars manages so it never touches your files.

Use mars adopt to bring an existing unmanaged file into .mars-src/ in one step.

Docs

Config — mars.toml, agent profiles, compilation, MCP/hooks
CLI — every command with flags and examples
Internals — sync pipeline, lock file, conflicts
Dev — local development, troubleshooting, smoke testing

License

MIT

mars-agents 0.2.3