Authenticate the SDK

Point TM_KEY_FILE at your key file and the SDK mints and refreshes tokens for you. Both SDKs read it from your environment. The Python SDK also loads a .env file; with TypeScript, run Node or Bun with --env-file=.env.

If you don't have a key file yet, see Create your API key.

.env: the two variables the SDKs read

# .env
TM_ENV=prod
TM_KEY_FILE=/path/to/your-api-key.json

Variable	Purpose
TM_KEY_FILE	Path to the downloaded API key file (JSON, contains key_id and the private JWK)
TM_ENV	Which environment to target, e.g. prod

Treat the key file like a password

Anyone with the key file can mint tokens as you. Keep it out of git and out of shared environments. If it leaks, revoke the key and create a new one at app.truemarkets.co.

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