Claude Code Seatbelt Kit

Stop your coding agent from forgetting the plan, repeating work, burning money or wrecking the app it just built.

Claude Code and Cursor write fast. They also forget what they were doing last session, rm -rf the wrong folder, paste a key into a commit, restart a live service, and say "done" without running the code once. The Seatbelt sits underneath the agent, so it does not matter whether the model remembers to be careful.

What you get (download, one click to install)

• A gate on every command and file edit. Five policies: never delete production data · never expose credentials · never change deployment without approval · verify frontend-to-backend wiring · test before declaring completion. Dangerous actions are refused or sent to you for a yes, with a plain-English reason.
• Project memory that survives sessions. Every session opens with a brief: what was edited, what was run, what failed, what was decided. Stored on a tamper-evident local chain. Nothing leaves your machine.
• "Done" means done. The agent cannot end a session with untested edits, or with a frontend calling routes no backend defines.
• Three skills you will actually use: /fix-my-app · /finish-end-to-end · /audit-real-vs-stubbed.
• The Sentarion MCP server, registered for you: govern, remember, recall, verify, isolated git worktrees, governed multi-agent dispatch.
• Free 14-day Sentarion v2 trial (signed audit manifests, adversarial code review, budgets, background jobs, hosted memory). Optional. The seatbelt works without it, forever.
• One-click installers for Windows and Mac/Linux with a live self-test. Your existing hooks and MCP servers are kept.

Install once. Keep building.

Works with Claude Code (first-class) and Cursor (beta). Needs Python 3.10+ (the installer offers to install it). Open-source engine (Apache-2.0, sentarion-mcp on PyPI); the kit is the packaging, policies, skills, installers and support.

Honest note: the gate matches patterns. It catches what it is written to catch. It is a seatbelt, not a guarantee. Keep backups.

Support: support@inboxaxe.com · More: https://inboxaxe.com/mcp

This purchase includes the Seatbelt Complete Policy Pack free (four more policies, a $19 value) — it's already bundled into the download, nothing extra to buy.

Guarantee: if this doesn't catch a real mistake in your first 14 days, email support@inboxaxe.com and you'll get a full refund, no questions asked.

I'm one person building this. If you get stuck installing it, email me directly and I'll help — that won't scale forever, but it's true right now.