Show HN: Deedglass – Verify AI Agent SQL Changes Using Postgres WAL

Deedglass is an open-source, self-hosted tool that sits between AI agents and the systems they modify: rules decide each tool call, a check compares what the target actually changed against what the agent reported (Claimed, Checked or Proven), and each result is sealed as a signed record verifiable offline. Its demo shows an agent reporting a 1-row UPDATE while a legacy trigger changed 301 rows in the same transaction, caught via Postgres logical decoding, with an undo that runs only after a person countersigns. It is pre-1.0, has one maintainer, and Proven checks cover Postgres only, requiring wal_level=logical and REPLICA IDENTITY FULL on watched tables.