# JSONPlaceholder

**Canonical:** https://apis.io/providers/jsonplaceholder/  
**Website:** https://jsonplaceholder.typicode.com  
**APIs profiled:** 6

JSONPlaceholder is a free, no-auth fake REST API for prototyping, tutorials, and testing. It exposes six relational resources — posts, comments, albums, photos, todos, and users — over six standard REST routes per resource. All write operations (POST, PUT, PATCH, DELETE) are accepted and respond as if successful, but no changes are persisted. The service is built on the open-source json-server engine (also by typicode) and serves billions of requests per month with no rate limits or authentication.

## Kin Score — 34.6 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 30.8 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 23.5 (agent-aware)

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

## Access

Free · Open access — onboarding: open, pricing: free, trial: no (confidence: medium).

## APIs (6)

- **JSONPlaceholder Albums API** — 100 sample photo albums owned by users
- **JSONPlaceholder Comments API** — 500 sample comments belonging to posts
- **JSONPlaceholder Photos API** — 5000 sample photos belonging to albums
- **JSONPlaceholder Posts API** — 100 sample blog posts owned by users
- **JSONPlaceholder Todos API** — 200 sample todo items owned by users
- **JSONPlaceholder Users API** — 10 sample users with profile, address, and company metadata

## Agentic access (1)

- **Jsonplaceholder Agentic Access** — 41 operations · 24 acting

## Security (1)

- **Jsonplaceholder Domain Security** — TLSv1.3

## Plans (1)

- **Jsonplaceholder Plans Pricing**

## Use cases (6)

- **Frontend Prototyping** — Wire up React, Vue, Angular, or Svelte tutorials against a real HTTP endpoint without standing up a backend.
- **API Client Testing** — Exercise HTTP client libraries (fetch, axios, requests, OkHttp) against a stable public REST surface.
- **Tutorial and Courseware** — Power coding tutorials, bootcamp exercises, and conference workshops that need a deterministic JSON API.
- **Mobile App Demos** — Drive iOS and Android sample apps that demonstrate networking, list rendering, and CRUD flows.
- **Tooling QA** — Smoke-test API generators, codegen tools, SDK builders, and OpenAPI tooling against a stable real-world API.
- **Workshop Sandboxes** — Provide a no-signup HTTP API for hands-on workshops where participants cannot wait for credentials.

## Tags

Development, Testing, Prototyping, Fake API, Open-Source, REST

---

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