# The Cat API

**Canonical:** https://apis.io/providers/the-cat-api/  
**Website:** https://thecatapi.com/  
**APIs profiled:** 5

An open, free, read and write API all about cats. Access thousands of cat images, vote, favorite, and explore breed information.

## Kin Score — 31.7 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 31.7).

| Facet | Score |
|---|---|
| Discoverability | 55.6 |
| Contract Quality | 59.9 |
| Governance | 13.6 |
| Contract Governance | 13.6 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 28.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (5)

- **The Cat API Breeds API** — List, search, and retrieve cat breed information.
- **The Cat API Categories API** — Retrieve available image categories.
- **The Cat API Favourites API** — Manage user favourite cat images.
- **The Cat API Images API** — Search, upload, retrieve, and delete cat images.
- **The Cat API Votes API** — Cast and manage votes on cat images.

## Agentic access (1)

- **The Cat Api Agentic Access** — 17 operations · 6 acting

## Security (2)

- **The Cat Api Authentication** — apiKey · 1 scheme
- **The Cat Api Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **The Cat Api Plans Pricing**

## Tags

Animals, Cats, Image, Media

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