Hatch3r

hatch3r

Crack the egg. Hatch better agents.

hatch3r is an open-source CLI and editor plugin (Claude Code + Cursor) that installs a tool-agnostic agentic coding setup into any repository. Audited each release across 24 governance domains and generated for 3 platform adapters (Claude Code, Cursor, GitHub Copilot). One command gives you the full set of agents, skills, rules, commands, hooks, and MCP integrations -- optimized for your coding tool of choice (live counts in governance/inventory.json ). Selective init installs only what you need based on your project type and team size.
v1.9.0 scope cut: As of 1.9.0 hatch3r supports only Claude Code, Cursor, and GitHub Copilot. Twelve adapters were removed in a hard cut; canonical content is now read from the bundled npm package (no .agents/ materialization in user repos), and the manifest moved to .hatch3r/hatch.json. See CHANGELOG.md for the full breaking-change list and migration notes.

Quick Start

Requires Node.js 22.13+.

--default generates a working standard-profile setup with no questions — the fastest path to a configured repo. The interactive init detects your repo, infers your project context (greenfield/brownfield, solo/team), then walks platform → repo identity → content profile (minimal/standard/full/custom) → tools → CLI-tools picker, and generates everything. MCP is not prompted — opt in with --mcp or npx hatch3r mcp setup later. The platform (GitHub, Azure DevOps, or GitLab) is auto-detected from your git remote either way. Run into issues? See Troubleshooting.

Migrating from Cursor, Copilot, Windsurf, legacy .cursorrules, or a root AGENTS.md? Carry your existing rules across with npx hatch3r init --import  (--import auto imports every format in one pass) — they land under .hatch3r/overrides/rules/ (.md…