Start building. Free.
A build harness for your coding agent. It runs on your machine and drives the coding agent you already have — Claude Code, Codex, or Antigravity. Two pieces, a few minutes.
Install the server
A local cms process that hosts the tools. Runs in the
background on localhost:4003 and restarts on boot.
brew install Code-My-Spec/tap/codemyspecbrew services start codemyspec
Download cms-setup-x64.msi from the
latest release
and run it —
iwr -useb https://raw.githubusercontent.com/Code-My-Spec/plugins/main/install.ps1 -OutFile install.ps1; .\install.ps1Install the plugin
In your coding agent. Claude Code is the deepest integration; Codex and Antigravity are supported too.
/plugin marketplace add Code-My-Spec/plugins/plugin install codemyspec@codemyspeccodex plugin marketplace add Code-My-Spec/plugins
Then install codemyspec from /plugins and enable hooks via
/hooks. Latest steps in the
plugin repo.
agy plugin install /path/to/codemyspec
Or copy the plugin into ~/.gemini/config/plugins/codemyspec/. Latest steps
in the
plugin repo.
First run
In your Phoenix project.
/codemyspec:init auth
Then tell the agent to run get_next_requirement. That's the only command
you need to remember — whenever it doesn't know what's next, that's the answer.
Shown for Claude Code. On Codex, run the init skill from
/skills; on Antigravity, run /init auth.
Stuck, or want the whole loop explained? Read the getting started guide — it covers the setup checklist, the local admin UI, and troubleshooting.
Requirements: macOS (Apple Silicon) or Windows (x64) · a coding agent (Claude Code — deepest; Codex or Antigravity — early) · a Phoenix project (Elixir 1.18+, Phoenix 1.8+, PostgreSQL).
no catch
Free forever. Here's why we can mean it.
We make money when your app is running — the hosted layer for email, chat, and growth that keeps it alive in the world. Not when you build it. Bring your own keys, keep your own bill, own your code. No markup, no lock-in.