claimcheck

Archived, October 2026

claimcheck read an AI agent's final report, split it into claims, and checked each one against the agent's own tool log: what it wrote, what it ran, what it saw. Every run got a signed receipt.

We built it in September 2026 and stopped in October. On the models we ran it against, the reports almost always matched the logs. Nearly every flag turned out to be a false alarm, and nobody signed up for the hosted version. A checker that rarely catches anything isn't worth anyone's attention, so we called it.

The code stays up as a reference. The repository is read-only and the packages still install:

• github.com/CocaKova/claimcheck (archived)
• pip install claimcheck-receipts

The hosted service (accounts, witness, share links) is shut down. No one besides us had an account, and its data has been taken offline.