# chucknorris.io

**Canonical:** https://apis.io/providers/chucknorris-io/  
**Website:** https://api.chucknorris.io  
**APIs profiled:** 3

Free JSON REST API for hand-curated Chuck Norris jokes (facts) maintained by @matchilling. Supports random retrieval, category filtering, full-text search, and direct lookup by joke identifier. Hosted at api.chucknorris.io with an open-source Spring Boot service (chuck-api), official Node.js and Java client SDKs, a Chrome extension, a Storybook addon, and Messenger / Alexa companion apps published under the chucknorris-io GitHub organization.

## Kin Score — 40.8 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 40.8).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 70.4 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 19.0 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 39.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | verified |
| 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

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (3)

- **chucknorris.io Categories API** — Joke category metadata.
- **chucknorris.io Jokes API** — Chuck Norris jokes (facts) endpoints.
- **chucknorris.io Search API** — Full-text search across the joke corpus.

## Agentic access (1)

- **Chucknorris Io Agentic Access** — 4 operations

## Security (1)

- **Chucknorris Io Domain Security** — TLSv1.3

## Plans (1)

- **Chucknorris Io Plans Pricing**

## Use cases (4)

- **Demo Data Source** — Tutorial-friendly free public API for learning HTTP clients, SDKs, and AI tool patterns.
- **Chat & Bot Surfaces** — Slack, Messenger, and Alexa surfaces inject random facts on demand.
- **Developer Toy** — Storybook addon and Chrome extension use the API to entertain developers.
- **Load & Reliability Testing** — Lightweight, no-auth endpoints are useful targets for HTTP client smoke tests.

## Tags

Entertainment, Jokes, Chuck Norris, Open-Source, Public APIs

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