Capabilities are not the verifier itself. A capability is an action/verb family that receipts can describe. It can include request schemas, receipt schemas, examples, agent cards, ENS records, MCP tool definitions, OpenAPI operations, and SDK usage.
1
Semantics
Capability semantics define verb meaning and expected execution intent.
2
Request schema
Request schemas define valid inputs before runtime execution begins.
3
Runtime execution
Runtime executes the action and signs receipts using signer identity and key material.
4
Canonical receipt
Canonical receipts include metadata.proof fields for JSON canonicalization, SHA-256 hashing, and Ed25519 signatures.
5
Discovery surface
MCP bridge and API discovery surfaces expose callable tools and operations.
6
Verification
Verifier validation confirms proof integrity, and tamper invalidation fails altered receipts.