Playground

Try the API with your key

Pick an endpoint, send a real request and see the JSON. The code beside it updates as you go, ready to paste into your project.

No key? Get a free one
Try:

Request

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· sent only to api.duelapi.com
GET

Code

Uses the request on the left. Your key is shown as your_api_key_here, never your real key.

Good to know

  • Send the key in the X-API-Key header, or as ?apiKey= in the URL.
  • Failed requests (4xx and 5xx) cost no credits. /account and /health are free.
  • Want a push feed instead of polling? See the WebSocket API.
  • Every field in every response is in the docs.