# APIs.guru

**Canonical:** https://apis.io/providers/apis-guru/  
**Website:** https://apis.guru  
**APIs profiled:** 1

APIs.guru is an open source, community-driven directory of public REST API definitions in OpenAPI 2.0/3.x format, described as the Wikipedia for Web APIs. The project searches for public API definitions, converts various formats to OpenAPI 3.0, corrects errors in approximately 80% of definitions, and enriches entries with logos, categories, and metadata. It catalogs over 2,500 API descriptions with 100,000+ endpoints, updating definitions weekly from original sources. The platform is licensed under CC0-1.0 for contributed definitions and welcomes community contributions through GitHub.

## Kin Score — 31.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 31.3).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 67.1 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 31.6 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (1)

- **APIs.guru APIs API** — Actions relating to APIs in the collection

## Agentic access (1)

- **Apis Guru Agentic Access** — 7 operations

## Security (1)

- **Apis Guru Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Apis Guru Plans Pricing**

## Use cases (6)

- **API Discovery** — Developers can search and browse the directory to discover public APIs across thousands of providers by category, provider, or keyword.
- **SDK Generation** — OpenAPI specs from the directory can be used with tools like Microsoft Kiota and Speakeasy to generate API client SDKs.
- **API Documentation** — ReDoc and other documentation tools use the directory specs to generate beautiful, interactive API documentation automatically.
- **API Testing** — HTTP Toolkit and other testing tools leverage the directory for debugging and mocking API requests against standardized specs.
- **Schema Exploration** — GraphQL Voyager allows teams to visually explore GraphQL schema relationships to understand API structure quickly.
- **API Catalog Building** — Organizations can use the directory as a foundation for building their own internal API catalogs and governance programs.

## Tags

API Catalog, API Directory, API Discovery, Community, GraphQL, Open-Source, OpenAPI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/apis-guru/). Scores are computed from the provider's own public artifacts under a published rubric.