Sinay · Rate Limits

Sinay Rate Limits

Sinay governs API usage primarily through a monthly call / API-unit (credit) allowance tied to the subscribed plan rather than by publishing fixed per-second or per-minute request caps. Each API exposes its own consumption reporting - a /usages endpoint (returning allCalls, successCalls, clientErrorCalls, serverErrorCalls, and consumedApiUnits per month) on the Ports & Vessels, Metocean, CO2, and ETA APIs, and /consumption/current-period and /consumption/periods on the Port Congestion API. Some endpoints consume more than one API unit per call, so the effective request ceiling depends on the per-endpoint credit weighting for the plan.

Sinay Rate Limits is the machine-readable rate-limit profile for Sinay on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 3 rate-limit definitions, measuring api_units and requests.

The profile also includes 3 backoff/retry policies defined and response codes documented for unauthorized.

Tagged areas include Maritime, Maritime Data, Rate Limiting, and Quotas.

3 Limits
MaritimeMaritime DataRate LimitingQuotas

Limits

Monthly API Units / Calls account
api_units
per plan (free ~500/mo, Pro ~10,000/mo, Enterprise custom)
The dominant limit. Reported via each API's /usages consumedApiUnits or the congestion /consumption periods.
Per-Endpoint Credit Weighting endpoint
api_units
varies by endpoint
Some endpoints consume more than one API unit per call; consult the Developers Platform.
Fixed Request-Rate Cap account
requests
not published
No per-second/per-minute numeric rate cap documented in the per-product Swagger files.

Policies

Monthly Allowance
Usage is metered against the plan's monthly call / credit allowance rather than a rolling per-minute cap.
Consumption Reporting
Clients can self-monitor spend via each API's /usages endpoint or the congestion /consumption endpoints.
Backoff Strategy
Clients should implement retries with exponential backoff and handle 401 (auth) and error responses gracefully.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • 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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Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/sinay-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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