THE RAILS
KYA-OS sits underneath the protocols you already speak. An agent proves who it is once — the same signed proof then projects onto every registry, transport, and credential format downstream.
one identity in · one signed proof · every surface out
Write once, project everywhere
KYA-OS does not ask ecosystems to migrate. Write the Entity Card once - the single source of truth - and each downstream protocol gets a projection of it, emitted by the same code path and gated by the same proof posture. Update the card and every projection stays consistent.
A peer that does not speak KYA-OS ignores the extra metadata and loses nothing; a compatible peer gains cryptographic certainty about who it is talking to. All four discovery projections carry that graceful-degradation contract.
Emits an AgentCard capability extension, scoped to agent entities. Activated via the A2A-Extensions header; unaware peers ignore it.
An always-by-ref catalog index row plus Entity Card metadata in the MCP Registry _meta extension point — the index stays cheap, the card lazy-fetches.
An AgentFacts JSON-LD projection populating NANDA's shipped owner slot; namespaced kya:* keys degrade gracefully.