MockBase

Templates

Start from a real API.

Ready-made mocks with the field names and object shapes the real services return — live in one click, no account required.

Payments

Mock the Stripe API

Customers, payment intents, and a declined-card path you can trigger on demand.

GETPOST
5 routes

Developer tools

Mock the GitHub REST API

Users, repositories, and issues — without burning your rate limit.

GET
4 routes

AI

Mock the OpenAI API

Chat completions and embeddings that cost nothing and answer instantly.

POSTGET
4 routes

Messaging

Mock the Slack Web API

Post messages and list channels without spamming a real workspace.

POSTGET
3 routes

Mock the Twilio SMS API

Send SMS in your tests without sending SMS to anyone.

POSTGET
2 routes

Mock the Discord API

Build a bot without a test server full of debug messages.

POSTGETDELETE
3 routes

E-commerce

Mock the Shopify Admin API

Products and orders without a development store.

GET
3 routes

Productivity

Mock the Notion API

Query a database and read pages without an integration token.

POSTGETPATCH
3 routes

Mock the Airtable API

Records with the rec-prefixed ids and the fields wrapper, minus the base.

GETPOST
3 routes

Auth

Mock a JWT login flow

Login, refresh, and a protected endpoint that actually rejects you.

POSTGET
5 routes

Starters

Mock a REST CRUD API

A resource that actually remembers what you did to it.

GETPOSTPATCHDELETE
4 routes

Mock a GraphQL API

The data envelope, and the errors envelope most clients forget to handle.

POST
2 routes

Mock every HTTP error

One endpoint per failure code, so error handling gets tested on purpose.

GET
9 routes

Mock a paginated API

Three real pages, so infinite scroll has somewhere to stop.

GET
3 routes

Mock a slow API

Endpoints that take their time, so spinners and timeouts get exercised.

GET
4 routes

Mock a webhook endpoint

A public URL that accepts any webhook and shows you exactly what arrived.

POSTGET
2 routes

Response payloads are representative examples using each API's real field names and object shapes, not exhaustive replicas of their schemas. MockBase is an independent tool and is not affiliated with, endorsed by, or sponsored by any service named here; their names are used only to describe the shape of the data being mocked.