Free tier, no card
Get a key and run a real call
New accounts start free, no card required. Create a key in the dashboard and paste it into any example here.
1
Choose an endpoint
Start with a low-risk market-state route such as a Hyperliquid order book.
2
Add your API key
Use the
X-API-Key auth control in Endpoint Reference.3
Run the request
Inspect
success, data, and meta.request_id.4
Copy the code example
Move the same request into curl, Python, JavaScript, or Go.
Endpoint reference
Browse OpenAPI-backed endpoint pages.
Quickstart
Run the same flow from your terminal.
Playground Review Checklist
Use the playground result to create a small implementation note before copying code into a client.
If the browser run fails but the generated curl works, continue from curl and keep the browser limitation out of the application design. If both fail, keep the status, error code, route, parameters, and request ID together before debugging the client. The public website links to this docs playground instead of maintaining a separate static endpoint tester.
What The Playground Is Good For
Use the playground to confirm route shape, auth, parameters, and response fields before writing code. It is especially useful when you are deciding between route families: compare a Hyperliquid core example, a Spot pair, a HIP-3 namespaced symbol, a HIP-4 outcome, and a Lighter symbol before committing the route to a client. The playground is not a replacement for production error handling. After you copy an example into code, add retries, request-ID logging, pagination, data-quality checks, and a clear key-management path. If browser execution is limited by an auth or CORS environment, the generated curl example is still the stable fallback because it shows the exact method, path, parameters, andX-API-Key header.
Safe Test Pattern
Start with low-cost market-state routes, then move to historical windows. Keep query parameters narrow while testing: one symbol, one route, one time window, and a smalllimit. Once the response is understood, move to CLI, SDK, REST code, or OpenAPI codegen for repeatable workflows.