Start with /seatbelt

Get access, install, and run one command in your agent.

01 Get access
```
hello@withseatbelt.com
```
Early access is invite-based while the repo is private. Email us and we'll add you to the repo.
02 Install
```
git clone https://github.com/connorburgess/seatbelt-monorepo
cd seatbelt-monorepo
pnpm install:local
```
Wires the MCP server and the /seatbelt skill into Cursor and Claude Code. The full walkthrough below covers the local API.
03 Try it
```
/seatbelt
```
In your agent, inside the app you built. You get a verdict, up to three flags, and a report link.

Full walkthrough

Clone, env, and API

Early access installs from the repo — you'll need Node 22+ and pnpm. Keep the API running in the background so folder scans work.

git clone https://github.com/connorburgess/seatbelt-monorepo
cd seatbelt-monorepo
pnpm install
cp .env.example .env.local
# Set DATABASE_URL in .env.local
pnpm db:migrate
pnpm install:local
pnpm dev

Coming soon: npx @withseatbelt/install once the package is on npm.

Reload and connect your project

Reload MCP in Cursor and confirm seatbelt shows as connected. Optionally run /seatbelt init inside your app so Seatbelt remembers the repo — scans work without it.

The check loop

Type /seatbelt and you get a plain-English verdict, a report link, and a next move. Run /seatbelt fix to apply fixes, then /seatbelt again until you're cleared. When git is your deploy, saying commit this safely or push my changes runs the same check first — flagged pushes land on a PR instead of main.

Gate pushes when nobody's watching

The same check runs headlessly as seatbelt-gate — exit 0 means cleared, exit 2 means hard gates open. Wire it into a pre-push hook or CI and even an autonomous agent can't ship an open hard gate. Fully local, no network.

# .git/hooks/pre-push
#!/bin/sh
node /path/to/seatbelt-monorepo/packages/engine/dist/cli.js . || {
  echo "Blocked by seatbelt gate — fix in your agent or open a PR."
  exit 1
}

Update

After you pull skill or MCP changes, rerun pnpm install:local from the monorepo, then reload MCP.