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Platform

How the platform behaves, for people building against it rather than clicking through it.

Topic Covers
Architecture The services, what each owns, and how a message becomes an answer.
Response envelope The success, data and meta shape every endpoint returns.
Auth Install-scoped tokens, PKCE, and how revocation works.
Rate limits The limits, the headers, and what to do when you hit one.
Error codes Every code the platform emits, what triggers it, and what to do.
Versioning What is stable, what can change, and how changes are announced.
Changelog What shipped, in order.

The error code is the stable part of a failure. Messages get reworded, HTTP status codes are coarse, but the code is what you should branch on and what support will ask you for.

The architecture overview, the full error code reference, rate limits, and the changelog.