Prototype Playground
Launch production-level demos before your backend sprint even starts
Wire up 14+ industries, deep-link straight into the playground, and rehearse realistic response times so your UI hits with intention.
Deep-link ready
Every CTA lands you in the playground with the method, path, and payload pre-selected.
Latency sliders
Simulate skeleton states and optimistic UI flows with built-in delay controls.
14+
industries mocked
85+
documented endpoints
120ms
average latency dial
98% faster mock integrations
Prefill a domain, method, path, and optional body right from the hero. Every CTA deep-links into the playground so you never lose context.
Request
/api/auth/register
Body preset hydrated
Latency dial
delay=1
Simulate skeleton states inside the playground.
{
"user_id": "usr_82h1",
"status": "provisioned",
"token": "xxxx-xxxx-ship"
}Feature stack
Why developers refuse to ship without Fake API for Devs
Opinionated features that taste like shipping velocity and look like premium SaaS.
Instant Generation
Spin up production-flavored mock APIs with zero config so your UI never blocks.
Ready todayMultiple Formats
Grab RESTful endpoints, GraphQL-like payloads, or raw JSON that snaps into your HTTP client.
Ready todayProduction-Ready
Seed edge cases, HTTP codes, and lifelike datasets long before the real backend ships.
Ready todayFull Control
Dial pagination, latency, and relationships like a soundboard tailored to your QA team.
Ready todaySave Development Time
Use Fake API for Devs as your stand-in backend while you obsess over UX polish.
Ready todayAPI Versioning
Experiment with version bumps safely using sandboxed payloads and responses.
Ready todayDomain library
14+ industries, curated and themed
Tap a tile to preview live endpoints, then deep link straight into the docs or playground.
API prefix: /api/auth
Authentication
User management, login, registration, and session endpoints
Sample endpoints
/api/auth/register/api/auth/login/api/auth/users/api/auth/profile?user_id=usr_123456Support the studio
Buy Fake API for Devs a coffee
If these mock endpoints unblocked your sprint, consider tipping the studio so we can keep inventing playful data sets.
- Coffee = more playground presets
- Keeps the free plan truly free
Dev Wisdom Break
Comment your fake endpoints as if production is reading them—future teammates can ship confidently when the real API lands.
Mentor Mode
Pair mocked latency with skeleton states so demos feel intentional—not like the network just forgot about you.
Docs flow
Ship-ready documentation with a playful twist
Each step is annotated with shortcuts so you can live inside the playground without context switching.
Choose your API domain
Browse 14+ curated domains spanning auth, commerce, analytics, healthcare, and more.
Customize the payload
Configure field names, relationships, and defaults. Every domain honors pagination, latency, and error presets.
Copy the ready-made endpoints
Grab REST paths that match the documentation exactly—no guessing about verbs, params, or default filters.
Integrate and test fast
Drop the endpoints into your front-end or QA suite, share playground links, and iterate without touching the backend.
Need a break?
Share the docs URL with teammates—every link encodes the selected domain and endpoint automatically.
Shipping Reminder
Leave a note in your README explaining how to replay mock requests—your future launch post will basically write itself.
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Join thousands of developers using Fake API for Devs to accelerate QA, prototyping, and live demos.
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