Individual skill

test-placeholder-data

Use when building a demo, prototype, or tutorial that needs realistic remote data - "fake products/users/todos for this app", "an API I can hit while wiring up fetch", "placeholder images", "seed this UI with something that looks real", or teaching HTTP/CRUD against a live endpoint. DummyJSON is the default (rich e-commerce-shaped data, full fake CRUD, no key); JSONPlaceholder, RandomUser, and Lorem Picsum cover the rest. Do NOT use for generating local test fixtures or factories inside a test suite - use test-data-builder instead; do NOT use when the task needs real-world data (weather, prices, countries) - route through public-data-api-picker.

skills/test-placeholder-data/SKILL.md

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Repository stars (not skill ratings): 24
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claude Repository topic
claude-skills Repository topic
skill-me Repository topic
education Derived category
design Derived category
data Derived category
testing Derived category
design-interface Derived category

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# Test & Placeholder Data APIs

Wire a demo against live fake data in one call. The mistake this prevents: hand-writing a 40-line mock array (or standing up a local json-server) when a keyless hosted API already serves richer, more realistic data - and the demo then never exercises real fetch/loading/error paths.

## Ranked APIs

1. **DummyJSON** (dummyjson.com) - DEFAULT. 190+ products, users, carts, posts, recipes with realistic fields; search, pagination, field selection; fake write endpoints for full CRUD demos. No key.
2. **JSONPlaceholder** (jsonplaceholder.typicode.com) - the classic minimal set (posts/comments/todos/users) when the tutorial audience expects it or you need the flattest possible shape. No key.
3. **RandomUser** (randomuser.me) - generated people with names, emails, avatars, addresses. Use for user-directory and profile-card UIs. No key.
4. **Lorem Picsum** (picsum.photos) - placeholder photos at any size. No key.

## Procedure

1. **Match the API to the demo's domain**: e-commerce/dashboard → DummyJSON products or carts; social/feed → DummyJSON posts or JSONPlaceholder; people/profiles → RandomUser; image slots → Picsum.