Knowledge Base
Concepts that apply everywhere
The API reference documents each tool. These guides cover the patterns that cut across all of them — the mental model that makes the whole surface predictable.
Guides
Sync & asyncAlmost everything is synchronous — what that means, and the few exceptions.Read Sending & receiving filesThe three ways to send a file, and the three ways results come back.Read Choosing an engineWhen to reach for the premium AI/vision tier over the deterministic one.Read Access tiersFree-try, login-only, and Pro/Enterprise-only — which tools sit where.Read Idempotency & retriesHow to retry safely without double-charging or double-processing.Read