Flash Express Rate Limits

Flash Express documents NO rate limits for the FlashExpress Open API. limit_count is 0 as a measured result. The full published reference was searched for "rate limit", "limit", "frequency", "per second", "QPS", "throttl", "quota" and "too many" and none of these appear in any operational sense. No response header is described anywhere in the documentation — not RateLimit-*, not X-RateLimit-*, not Retry-After — and the published response-code registry contains no throttling or too-many-requests code (the 22 documented codes cover signature, validation, entitlement, state and coverage failures only). This matters for an integrating agent: there is no runtime signal to back off on, so a client cannot distinguish being throttled from a generic code 0 internal server error, and must implement its own conservative pacing and backoff rather than reacting to a published budget. Limits may well be enforced server-side; they are simply not published, and nothing was inferred here.