Skills governance controls which declared agent skills can be invoked. It applies Arsenal-style policy to SKILLS.md files and runtime skill calls.

What it gates

Policy example

Runtime use

Audit receipts

Recorded invocations append immutable receipts to a BLAKE3 hash chain. hash audit mode records safe metadata and a payload hash. full audit mode records the argument payload for high-sensitivity forensic workflows.

Relationship to Arsenal

Skills governance is not a separate security primitive. It is an Arsenal policy specialization for “which skill may this agent invoke right now?”