Capability Host Protocol

Name: Capability Host Protocol
Author: Capability Host Protocol

AgentA2AMCP

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.

by Capability Host Protocolrepository ↗homepage ↗v0.8.0

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability109/109 checks ok

when	check	result	http	latency	detail
5 h ago	mcp initialize	ok	200	160 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
11 h ago	mcp initialize	ok	200	166 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
18 h ago	mcp initialize	ok	200	178 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
24 h ago	mcp initialize	ok	200	176 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
31 h ago	mcp initialize	ok	200	1001 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
2 d ago	mcp initialize	ok	200	174 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
2 d ago	mcp initialize	ok	200	207 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
2 d ago	mcp initialize	ok	200	199 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
2 d ago	mcp initialize	ok	200	220 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools
3 d ago	mcp initialize	ok	200	174 ms	server capability-host-protocol 0.8.0 · protocol 2025-06-18 · 9 tools

Tools observed via MCP handshake

explain — Learn what CHP is and how it works. Pass a topic, or omit to list topics. Topics: what-is-chp, evidence-model, why-a-protocol, governance, agentic-web, evidence
define — Define a CHP primitive. Pass a term, or omit to list the glossary.
how_to_adopt — Get the steps to start using CHP (begin with agents).
get_example — Get a runnable example. Pass a name, or omit to list examples. Names: hooks-install, inspect-session, minimal, agentic, rag, safety, persistence, evidence-outpu
faq — Common questions about CHP. Pass a query to filter, or omit for all.
list_capabilities — List the capabilities the open CHP adapter ecosystem declares, optionally by category.
get_capability — Resolve a capability id to its descriptor.
list_adapters — Browse the open adapter ecosystem, optionally by category.
search — Search CHP concepts, glossary, FAQs, and the capability catalog.

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

discoverycapabilitieschpdescriptorgovernanceadaptersecosystemspecdocsevidence

Declared skills

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

kind A2A Agent Card

name A2A Agent Card

repoUrl Official MCP Registry

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

homepageUrl A2A Agent Card

publisherUrl A2A Agent Card

publisherName A2A Agent Card

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

A2A Agent Cardhttps://www.capabilityhostprotocol.com/.well-known/agent-card.json

first seen 1 mo ago · fetched 5 d agoopen ↗

Official MCP Registryio.github.capabilityhostprotocol/chp

first seen 1 mo ago · fetched 3 d agoopen ↗

Field history (12 recent events)

1 mo ago · declared · protocols → ["a2a","mcp"]
1 mo ago · declared · kind → "agent"
1 mo ago · declared · name → "Capability Host Protocol"
1 mo ago · declared · summary → "CHP is the governed execution layer for the agentic web. It declares, governs, and proves what agents and systems do at
1 mo ago · declared · description → "CHP is the governed execution layer for the agentic web. It declares, governs, and proves what agents and systems do at
1 mo ago · declared · publisherName → "Capability Host Protocol"
1 mo ago · declared · publisherUrl → "https://capabilityhostprotocol.com"
1 mo ago · declared · homepageUrl → "https://docs.capabilityhostprotocol.com"
1 mo ago · declared · description → "Learn and adopt the Capability Host Protocol — the agentic web's open evidence layer."
1 mo ago · declared · publisherName → "capabilityhostprotocol"
1 mo ago · declared · homepageUrl → "https://capabilityhostprotocol.com"
1 mo ago · declared · repoUrl → "https://github.com/capabilityhostprotocol/chp-core"

This record is unclaimed

Evidence

What the publisher says

Capabilities

Where this record came from