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Mock API Studio
API & HTTP
Backend not ready? Paste your JSON and get a working REST API your frontend can call today.
- 1 project with up to 2 resources and 25 records per resource
- Create resources by pasting JSON (arrays and objects are inferred) or from a field table
- Realistic seed data picked from field names and formats (email, name, avatar, price, createdAt, uuid and 50 more), reproducible from a fixed seed
Open Mock API Studio Free · Pro $5/mo
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Cronwatch: Email alerts Want an email when a cron job fails or never runs? Get one with a single curl line. Cronwatch: Linux cron Not sure your Linux cron jobs ran last night? Monitor each crontab line with one URL. Cronwatch: GitHub Actions GitHub Actions cron not triggering? Get alerted when a scheduled workflow stops running. Cronwatch: Backups Would you know if last night's backup failed? Get an email when a backup job goes quiet. Cronwatch: Python scripts Scheduled Python script stopped running? Ping from the script, get alerted when it stops. Cronwatch: Windows tasks Windows scheduled task not running? Get an email when a task stops reporting in. Mock API Studio: Users API Need a fake users REST API for your frontend? Get a working /users endpoint now Mock API Studio: From OpenAPI (Pro) Have an OpenAPI spec but no backend? Turn the YAML into a live mock API with Pro Mock API Studio: json-server online Want json-server without installing it? Paste your db.json and get a live URL Mock API Studio: Products API Need a fake products API with images? Get a working /products endpoint now Mock API Studio: Pagination Testing pagination or infinite scroll? Get a fake API with real pages to walk Mock API Studio: Todos API Building a todo app? Get a fake todos REST API that saves your changes Mock API Studio: E-commerce API Building a shop frontend? Get a mock e-commerce API with customers and orders Mock API Studio: Blog posts API Need a fake blog API? Get posts, comments and authors that link together Mock API Studio: Employees API Need a dummy employee API for a CRUD demo? Get a working /employees endpoint Mock API Studio: Recipes (search) Need a fake API with search? Get a recipes endpoint that answers ?q= queries 
Cardsmith: Next.js Dynamic OG images for Next.js without @vercel/og, edge functions or a font setup. Cardsmith: Astro Open Graph images for every Astro page from one template and a URL, with no build step. Cardsmith: X / Twitter card Make a Twitter card image that shows as a large preview when your link is shared on X. Cardsmith: Hugo OG images for every Hugo page from a single meta tag that uses the page title. Cardsmith: Blog posts Blog post social images that match your brand, generated from each post title. Cardsmith: Docs pages Social preview cards for documentation pages, so shared docs links show the page title. 
PairPad: JavaScript Need to write JavaScript together? Share a live editor that runs code for everyone PairPad: Coding interview Running a coding interview? Send one link to a shared editor that runs the code PairPad: SQL playground Need to work through SQL with someone? Run queries on a shared SQLite database PairPad: TypeScript Need to share TypeScript live? Edit it together and run it with a shared console PairPad: JS interview questions Practising JavaScript interview questions? Implement debounce and Promise.all live PairPad: SQL interview Practising SQL interview questions? Run them on an employee table with a partner PairPad: HTML & CSS Building a page with someone? Edit HTML, CSS and JS together with a live preview PairPad: React (JSX) Want to try a React component with someone? Edit JSX together with a live preview PairPad: Python (no run) Need to share Python code live? Edit and review it together in one shared editor PairPad: LeetCode with friends Want to solve LeetCode-style problems with friends? Race two solutions in one room 
Sprint Poker: Fibonacci Story point votes all over the place? Run Fibonacci planning poker with hidden votes Sprint Poker: Jira backlog Planning poker for a Jira backlog: paste issues free, or drop the CSV export with Pro Sprint Poker: T-shirt sizing Story points feel too precise? Estimate with T-shirt sizes in a free online session Sprint Poker: Teams & Zoom calls Estimating on a Teams or Zoom call? Share one link, vote on a 60-second clock, auto-reveal Sprint Poker: Modified Fibonacci Arguing 21 vs 34? Estimate with the modified Fibonacci deck: ½ to 13, then 20, 40, 100 Sprint Poker: Hours estimation Need task estimates in hours? Run planning poker with an hours deck (custom deck, Pro) Sprint Poker: Azure DevOps work items Estimating Azure Boards work items? Paste them free, or import the query CSV with Pro Sprint Poker: Custom cards (Pro) Your team needs a 6 or a 10? Make your own planning poker cards with Sprint Poker Pro Sprint Poker: Story points vs days How many days is a story point for your team? Compare estimates with cycle time (Pro) 
Schema Diff Studio: Postgres add column Adding columns to a Postgres table? Generate the ALTER TABLE migration from two schemas Schema Diff Studio: Compare pg_dump files Compare two pg_dump schema files and get the migration between them Schema Diff Studio: Postgres rename column Renaming a Postgres column? Get RENAME COLUMN, not a DROP and ADD that loses data Schema Diff Studio: Postgres ER diagram Need an ER diagram of a Postgres schema? Paste the SQL and see it drawn Schema Diff Studio: Postgres add index Adding indexes to an existing Postgres table? Get the CREATE INDEX migration, checked Schema Diff Studio: SQLite add column Adding columns to a SQLite table? See which ADD COLUMN works and which needs a rebuild Schema Diff Studio: Postgres enum change Changing a Postgres enum? Add values in place, or recreate the type to remove one Schema Diff Studio: SQLite drop column SQLite drop column failing, or need to change a type? Get the table rebuild script Schema Diff Studio: Postgres add foreign key Adding a foreign key to an existing Postgres table? Get the ADD CONSTRAINT migration Schema Diff Studio: SQLite ER diagram Need an ER diagram of a SQLite database? Open the .db file or paste .schema output Schema Diff Studio: Postgres change column type Changing a Postgres column type? Get ALTER COLUMN TYPE ... USING, flagged for review Schema Diff Studio: Postgres add constraints Adding NOT NULL, UNIQUE or CHECK to an existing Postgres table? Get the ALTER script 
Statusboard: Statuspage alternative A simple Statuspage alternative: public status page and uptime checks, free for one page. Statusboard: API status A public API status page that checks your health endpoints every 5 minutes. Statusboard: SaaS A status page for your SaaS: app, API and email delivery, with incidents and uptime bars. Statusboard: Uptime An uptime status page with daily uptime bars, generated from checks every 5 minutes. Statusboard: Service status A service status page your customers can check before they contact support. Statusboard: Server status A server status page for your sites and services, checked from outside every 5 minutes. 
Hookwatch Webhook Tester: Stripe Stripe webhook signature failing? Inspect the event and verify it in your browser Hookwatch Webhook Tester: GitHub GitHub webhook signature check failing? See the delivery and verify X-Hub-Signature-256 Hookwatch Webhook Tester: Clerk Clerk webhook verification failing? Inspect the Svix delivery and check the signature Hookwatch Webhook Tester: Shopify Shopify webhook HMAC not matching? Capture the delivery and verify X-Shopify-Hmac-Sha256 Hookwatch Webhook Tester: Any HMAC-SHA256 Custom HMAC-SHA256 webhook not verifying? Check header, encoding and signed string here Hookwatch Webhook Tester: Slack slash command Slack slash command or request signature failing? Capture it and verify X-Slack-Signature Hookwatch Webhook Tester: WooCommerce WooCommerce webhook missing or signature wrong? Check X-WC-Webhook-Signature here Hookwatch Webhook Tester: Twilio SMS Twilio signature validation failing? Capture the SMS webhook and check X-Twilio-Signature Hookwatch Webhook Tester: Linear Linear webhook signature not verifying? See the delivery and check Linear-Signature Hookwatch Webhook Tester: Standard Webhooks / Svix Standard Webhooks signature not verifying? Inspect webhook-signature and check it here Hookwatch Webhook Tester: Square Square webhook signature invalid? Capture the event and check the URL-plus-body HMAC Monitoring
1API & HTTP
2Images & Media
1Team & Collaboration
2Database
1Status & Incidents
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