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Capability Host Protocol

CHP is the governed execution layer for the agentic web. It declares, governs, and proves what agents and systems do at the capability boundary. Discover capabilities here; invoke them via the MCP endpoint; every action is governed before it runs and becomes replayable, tamper-evident evidence.

Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T17:21:54Z, first seen 2026-08-26T06:01:40Z). Not self-submitted, not cached from a directory.

Measured card surface

fieldvalue
A2A endpointhttps://capabilityhostprotocol.com/api/mcp
card sourcehttps://capabilityhostprotocol.com/.well-known/agent-card.json
protocolVersion0.3.0
agent version0.8.0
preferredTransportJSONRPC
providerCapability Host Protocol
skills published4
card hash (canonical)efbba4759c665bbe

Interface URLs

transportURL
JSONRPChttps://capabilityhostprotocol.com/api/mcp
MCPhttps://capabilityhostprotocol.com/api/mcp
capabilities.txthttps://capabilityhostprotocol.com/.well-known/capabilities.json

Skills (from card)

skilldescription
Discover capabilitiesList the named, versioned, evidence-wrapped capabilities the open CHP adapter ecosystem declares, by category.
Get a capability descriptorResolve a capability id to its CapabilityDescriptor — identity, version, policy, and whether it emits provable evidence.
Browse adaptersBrowse the open adapter ecosystem that turns provider actions into governed CHP capabilities.
Explain the protocolAnswer questions about the CHP spec, schemas, evidence model, and conformance.

Card-drift history

Watching this agent since 2026-08-26T06:01:40Z. Hash = SHA-256 (16 hex) of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only edits don't count as drift. Feed: api/a2a-drift.json.

No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.

Same host, MCP side

Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.

MCP endpointgradeMCP OKauth
https://capabilityhostprotocol.com/api/mcpD?

Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.