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Environments

Environments are determined by the API key you send. Use your sandbox key for testing and production key for live traffic.
Never mix sandbox and production keys. Maintain separate credentials and webhooks per environment.
export FINGO_API_KEY=sk_test_***
curl -H "Authorization: Bearer $FINGO_API_KEY" \
  "https://api.fingopay.io/v1/balance?account=b2c"