API overview
Base URL, authentication kinds, the response envelope, rate limits, idempotency and versioning for the TrueEngage API.
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Send events, trigger transactional messages and flows from your servers.
Where to start
Authentication
How to authenticate SDK and server requests, which scopes each endpoint needs, and what happens when a key is refused.
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The error response shape, HTTP statuses and the stable error codes returned by the public API.
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