# Capability Host Protocol — Public API API

**Canonical:** https://apis.io/apis/capabilityhostprotocol-com/capability-host-protocol-public-api-api/  
**Provider:** Capability Host Protocol — https://apis.io/providers/capabilityhostprotocol-com/  
**Base URL:** https://capabilityhostprotocol.com  
**Documentation:** https://capabilityhostprotocol.com/openapi.json

Capability Host Protocol — Public API API is one of 2 APIs that [Capability Host Protocol](https://apis.io/providers/capabilityhostprotocol-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 1 JSON Schema definition. The published artifact set on APIs.io includes an OpenAPI specification and 1 JSON Schema.

CHP is the governed execution layer of the agentic web. This API exposes a natural-language query endpoint (/ask), the well-known discovery manifests, and the MCP server endpoint. For full tool invocation, connect over MCP at /api/mcp.

## Operations (6)

| Method | Path | Summary |
|---|---|---|
| GET | `/ask` | Natural-language query over CHP knowledge |
| POST | `/ask` | Natural-language query (POST) |
| POST | `/api/mcp` | MCP server (Model Context Protocol, streamable HTTP) |
| GET | `/.well-known/agent-card.json` | A2A agent card (capability manifest) |
| GET | `/.well-known/mcp.json` | MCP discovery manifest |
| GET | `/.well-known/capabilities.json` | CHP capability discovery manifest |

## Machine-readable artifacts (2)

- **OpenAPI** — https://artifacts.apis.io/capabilityhostprotocol-com/openapi/_original/capabilityhostprotocol-com-api-openapi.json
- **JSONSchema** — https://artifacts.apis.io/capabilityhostprotocol-com/json-schema/capabilityhostprotocol-com-ask-response-schema.json

## Other Capability Host Protocol APIs (1)

- [Capability Host Protocol API](https://apis.io/apis/capabilityhostprotocol-com/capability-host-protocol-api/)

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/capabilityhostprotocol-com/capability-host-protocol-public-api-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/capabilityhostprotocol-com/.