Sigildex

Approval records for AI agent skills: lock what a human approved, detect when the installed copy drifts, diff what changed

Overview

Started as a hosted, agent-first trust layer for agent skills: a REST API and MCP server that let an agent discover, inspect and verify skills, with x402 micropayments on Base and a three-layer safety-scoring pipeline over a ~200K-row corpus. After a summer spent rebuilding the index, I wound the hosted service down and shipped the piece that stands on its own: a small open-source CLI (lock, check, diff) that records the exact bytes of a skill a human approved and tells you, file by file, when the installed copy drifts. Local, deterministic, no network. Ships with an Agent Skill, llms.txt, a CI example and a postmortem.

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Tech Stack