CapsM — Capability Manifest Schema

Capability Manifest Schema · Early proposal for an agent capability manifest format. Superseded.

Editorial note

Documented here because the design conversation it started is still alive in OpenAgents and A2A. The artifact itself is deprecated.

Our analysis

CapsM was a 2025 proposal for a capability manifest format — a way for an agent to advertise to other agents what it could do, with what cost, under what constraints. The proposal was withdrawn in Q4 2025 after OpenAgents and A2A both adopted manifest formats that subsumed CapsM's design choices, with refinements. We include the entry on this tracker because (a) the design conversation CapsM started is still alive in the active proposals, and (b) deprecating standards is itself a useful editorial signal — readers know that we are tracking the layer broadly, not just the winners. The artifact itself should not be implemented today.

What we are watching

No active developments — entry retained for historical reference

How to cite this entry

Citation format: The Agentic Review. "CapsM — Capability Manifest Schema." Standards Tracker, last updated 2025-11-15. https://agentic.review/standards/caps-manifest/. See our citation style for additional guidance.

Update history

Material updates to this entry are dated and logged in our corrections log. The version above reflects the most recent review by the standards desk.