# Horizon API API

**Canonical:** https://apis.io/apis/alchemylab-sh/horizon-api-api/  
**Provider:** alchemylab-sh — https://apis.io/providers/alchemylab-sh/  
**Base URL:** https://horizon.alchemylab.sh  
**Documentation:** https://horizon.alchemylab.sh/openapi.json

Horizon API API is one of 2 APIs that [alchemylab-sh](https://apis.io/providers/alchemylab-sh/) 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.

Full-depth, key-gated access to Horizon's aggregated AI-industry corpus — LLM-scored news, semantic search, a cited RAG answer endpoint, an incremental delta feed, regional lenses (china, korea, japan, eu), briefing history, and webhooks. Authenticate with an API key: `Authorization: Bearer hzn_live

## Operations (10)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/v1/search` | Full-text search over the corpus |
| GET | `/api/v1/feed` | Incremental delta feed |
| POST | `/api/v1/ask` | Synthesized, cited answer (RAG) |
| GET | `/api/v1/related` | Semantic 'more like this' |
| GET | `/api/v1/briefings` | Daily briefing history |
| GET | `/api/v1/usage` | Rate-limit & quota self-check |
| GET | `/api/v1/webhooks` | List your webhooks |
| POST | `/api/v1/webhooks` | Register a webhook |
| DELETE | `/api/v1/webhooks/{id}` | Delete a webhook |
| POST | `/api/v1/webhooks/{id}/test` | Fire a signed test event |

## Machine-readable artifacts (2)

- **OpenAPI** — https://artifacts.apis.io/alchemylab-sh/openapi/_original/alchemylab-sh-api-openapi.json
- **JSONSchema** — https://artifacts.apis.io/alchemylab-sh/json-schema/alchemylab-sh-content-item-schema.json

## Other alchemylab-sh APIs (1)

- [Horizon API](https://apis.io/apis/alchemylab-sh/horizon-api/)

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