Hoppscotch
Test REST, GraphQL, and WebSocket APIs directly from your browser without an account.
Result
Please check your inputs.
How to Use This Tool
Open hoppscotch.io (no sign-up required).
Choose your request type — REST, GraphQL, or WebSocket — using the tabs at the top.
For REST, enter the API endpoint URL, select HTTP method (GET, POST, etc.), and optionally add headers, body, or query parameters.
Click 'Send' to execute the request and view the response, including status code, headers, and body.
Use the built-in collections and environment variables to organize and reuse your API tests.
What Is Hoppscotch?
Hoppscotch is a lightweight, open-source API development tool that runs entirely in your browser. It lets you test REST, GraphQL, and WebSocket APIs instantly without creating an account or installing any software. This makes it ideal for developers who need a quick, privacy-friendly way to debug endpoints, inspect responses, or explore web services during frontend and backend development. By eliminating setup friction, Hoppscotch helps teams iterate faster and reduces the overhead of managing dedicated API clients.
Formula
The tool uses a simple request-response model: Request = HTTP Method + Endpoint URL + (Headers + Body). Response = Status Code + Response Headers + Response Body. The HTTP method (GET, POST, PUT, DELETE, etc.) defines the action. The endpoint URL is the target API address. Headers carry metadata like authentication tokens. The body (for POST/PUT) contains data sent to the server. The response status code indicates success or failure, while headers and body contain the server’s reply.
Tips for Best Results
📁 Use environment variables to switch between development, staging, and production URLs without retyping — just define variables like {{base_url}} in your requests.
⚡ Enable 'Pre-Request Scripts' to automatically set dynamic headers, like generating timestamps or OAuth tokens, before each request.
🔍 For WebSocket testing, open the WebSocket tab, enter the endpoint, and use the message area to send and receive real-time data — perfect for debugging chat or live updates.
📝 Save frequently used requests in a collection and reuse them with different values to streamline your API workflow.
Frequently Asked Questions
Do I need to create an account to use Hoppscotch?
No, Hoppscotch works entirely in your browser without any sign-up. You can start testing APIs immediately. However, optional account features (via GitHub, Google, or email) let you sync collections across devices.
Can Hoppscotch test GraphQL APIs?
Yes, Hoppscotch has a dedicated GraphQL tab where you can input the endpoint, write queries or mutations, and view the response. It also supports variables and schema introspection.
Is Hoppscotch free to use?
Yes, Hoppscotch is free and open-source. You can use the web version at no cost, or self-host the application on your own infrastructure for full control over your data.