# HillSignal API

**Canonical:** https://apis.io/apis/hillsignal-com/hillsignal-com-api/  
**Provider:** HillSignal — https://apis.io/providers/hillsignal-com/  
**Documentation:** https://www.hillsignal.com/api/wire

HillSignal API is one of 2 APIs that [HillSignal](https://apis.io/providers/hillsignal-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 2 JSON Schema definitions. The published artifact set on APIs.io includes an OpenAPI specification and 2 JSON Schemas.

HillSignal API as documented publicly: 10 operations. Contract generated from the documentation by API Evangelist (2026-11-11); not the provider's own document.

## Operations (10)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/mcp` | The MCP server lets an AI assistant look things up in HillSignal while it answers you. |
| POST | `/api/mcp` | Model Context Protocol server (Streamable HTTP, stateless); 16 read-only tools; unkeyed at 60/min, keyed above |
| GET | `/api/v1` | GET https://www.hillsignal.com/api/v1 lists them. |
| GET | `/api/v1/signals` | GET /api/v1/signals |
| GET | `/api/v1/themes` | GET /api/v1/themes |
| GET | `/api/wire` | HillSignal Wire — normalized, provenance-stamped congressional, regulatory, and capital-flow intelligence. |
| GET | `/api/wire/entity/resolve` | organization → issuer ticker, exact match only, with method and refusal reasons |
| GET | `/api/wire/firehose` | cursor-paginated pull log |
| GET | `/api/wire/health` | per-source capture-latency SLA + integrity + entity-resolution coverage |
| GET | `/api/wire/stream` | Server-Sent Events push |

## Machine-readable artifacts (3)

- **OpenAPI** — https://artifacts.apis.io/hillsignal-com/openapi/_ae-authored/hillsignal-com-openapi-generated.yml
- **JSONSchema** — https://artifacts.apis.io/hillsignal-com/json-schema/hillsignal-com-get-api-mcp-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/hillsignal-com/json-schema/hillsignal-com-get-api-v1-response-schema.json

## Other HillSignal APIs (1)

- [HillSignal API](https://apis.io/apis/hillsignal-com/hillsignal-api/)

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