Synthflow Rate Limits
Synthflow documents two throttles, and both are call-shaped rather than request-shaped: Concurrent Active Calls (how many calls can be live at once) and CAPS, Call Attempts Per Second (how fast new calls can be started through the Make a Phone Call endpoint). Neither has a published number — both are scoped per account or shown in workspace/account terms. There is no documented general HTTP request rate limit for the other 99 operations, and no rate-limit response headers are published.
Synthflow Rate Limits is the machine-readable rate-limit profile for Synthflow on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 2 rate-limit definitions, measuring concurrent_calls and call_attempts_per_second.
The profile also includes response codes documented for throttled and note.
Tagged areas include Rate Limiting, Concurrency, CAPS, and Telephony.
Limits
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Every rate limit here is available over the APIs.io API and to AI agents over MCP.
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find_rate_limitsBrowse and filter every rate limit in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
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curl "https://apis.io/api/v1/rate-limits/synthflow-rate-limits"curl "https://apis.io/api/v1/rate-limits?limit=25"Discovery needs no key. Ratings and market analysis are Pro.