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Dev tools · September 15, 2025

API Fast Mock

Stateless API mocks in seconds, powered by tokens.

API Fast Mock launched on September 15, 2025 with 6 votes, #3,421 of 8,160 launches that month. The site was still online in September 2026, 1 year on.

What it does

Create statelesInstantly create stateless API mocks using compact tokens. No setup, no databases. Perfect for rapid prototyping, testing, and sharing with your team.s API mocks instantly using compact tokens. Perfect for rapid prototyping and testing.

Create stateless API mocks instantly using compact tokens. Perfect for rapid prototyping and testing.

Design a response, toggle the behaviors you need, and we pack the entire spec into a single compact token. Watch it build live on the right — then share the link. That's it. Pick a preset to fill everything instantly — then tweak. Or build from scratch below. Every mock needs a method, a status code and a response body. Flip on only what you need. Each one adds realistic behavior to your mock. Point to a key in your response (e.g. id or user.token ) and we'll fill it fresh on every call. First matching rule wins; otherwise the default response is used. Copy the URL and start calling it — or test it right here. Don't lose the edit link below. There's no database — this is the only time…from apifastmock.com

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