Evidence-backed signal

Anthropic updates its Skills announcement to publish an open cross-platform standard. Specification publication does not establish uniform support or a permission enforcement standard.

supported inference 90% confidence increasing

Downward provenance

event

Agent Skills specification is opened for portability

Thu Dec 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
96% confidence
artifact

Agent Skills specification is opened for portability

official_announcement
art-2025q4-skills-standard
original source

Agent Skills specification is opened for portability

Anthropic
src-2025q4-skills-standard