Phase 1 Exit Gate

English counterpart of PHASE_1_EXIT_GATE.md. | Türkçe

Date: 2026-08-18

Result: PASS

Required research, endpoint matrix, version baseline, and known limitations were completed. Acceptance confirmed seven public and seven signed REST endpoints; exact REST and separate alphabetical WebSocket signing; timestamp/offset/receive-window rules; rate headers, 429/418, REST-vs-WS retry semantics and order-count impact; unknown execution and no-blind-retry; current signed WebSocket UDS; removal of listen-key REST; production/Testnet behavior; pinned official sources; Python/Go/JavaScript SDK cross-checks; current streams replacing !ticker@arr; and no critical unanswered protocol question.

Critical findings were that OpenAPI lags current behavior, !ticker@arr and legacy listen-key REST are removed, REST and WS canonicalization differ, successful new/cancel request weight may be zero while order count still matters, and generic SDK retry policy is unsafe for commands. No endpoint/transport/signer/WebSocket production code was added in this research phase. Next: Phase 2 domain contracts and SDK core.