Keelmarker

Your AI agent says it’s done. Keelmarker checks.

Keelmarker records what you asked a coding agent to do, turns it into promises that can be checked, and blocks “done” until the tests prove them. You see what is proven, what is not, and what is running in production.

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The demo is read-only. No account, no sign-up.
Login locks after repeated failuresproven
Reset links work onceproven
Uploads over 10 MB are refusedno test yet
Gate: blocked. One promise has no test.

Start with your agent

Copy this into Claude Code or any AI coding agent. It connects to Keelmarker, sets up your first product, and follows the gate from then on. Nothing to install.

Prompt for your agent
Set up Keelmarker for this project, so that nothing counts as done until tests prove it.

1. Ask me for my Keelmarker access token (I create it under Settings in the app at https://keelmarker.com/app/). Then connect, replacing TOKEN with the token I give you:
   claude mcp add --transport http keelmarker https://keelmarker.com/api/v1/mcp --header "Authorization: Bearer TOKEN"
   If you are not Claude Code, add an MCP server with that URL and that Authorization header. Tell me if a restart is needed before the tools appear.
2. Call at_list_products. If this project has no product yet, call at_create_product with a short code and a name.
3. Call at_list_packs, tell me which starter packs fit this project, and apply the ones I choose with at_apply_pack.
4. For each requirement, write a test, then record it with at_create_test and link it with at_link_spec_test.
5. Run the tests and report the results with at_report_results, including the commit.
6. Before you tell me anything is done, call at_check_gate. If it is blocked, fix what it lists. Never say it is done while the gate is blocked.

Works with Claude Code and any tool that supports MCP over HTTP. You need an account to create the access token the agent asks for.

How it works

A simple loop that your agent follows and you can audit.

  1. Say what you want

    Before coding starts, the agent records the intent in plain words.

  2. Make promises

    The intent becomes specific statements that either hold or do not.

  3. Link the tests

    Each promise points at the tests that prove it. A promise with no test shows as open.

  4. Pass the gate

    The work cannot be closed until every promise has passing proof.

Built for people who ship with agents

Agents are fast and confident. Keelmarker is how you stay sure.

Proof, not claims

The verdict comes from test results tied to a specific commit, not from the agent’s summary.

Starter requirements

Packs add the checks that are easy to forget: web security, payments, accounts and passwords, safe delivery.

What is live

Record which commit is running, so the verdict describes production and not just a branch.

You decide the exceptions

Accepting a known risk is a human action with a record, never something an agent can do for itself.

A full trail

Every intent, promise, result and sign-off is kept, so you can see how a decision was made.

Works with your agents

Command line, an MCP server and hooks let agents report as they work.

Get early access

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