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CALLISTO GAMES
Reference / OpenAPI & Postman
Reference

OpenAPI & Postman

Machine-readable contract and a ready client. Both are built from the same source as this documentation.

openapi.json openapi.yaml Postman collection Sandbox environment

OpenAPI

OpenAPI 3.1. The paths are what you call; the webhooks section describes the wallet callback and the invoice webhook you receive. Generate a client from it or load it into your API tooling.

Postman

  1. Import the collection and the sandbox environment (File → Import).
  2. Select the Callisto Games — Sandbox environment and fill in key_id and secret.
  3. Run GET /v1/ping. The collection's pre-request script signs every request: raw body for a POST, METHOD /path?query otherwise.
  4. Copy a game id from GET /v1/games into the game_id variable to run the session and free-spin requests.
Use sandbox secrets only. Postman stores environment values on its servers when your workspace syncs.
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