Portcast · Rate Limits

Portcast Rate Limits

Portcast authenticates the Container Tracking API with an x-api-key header issued per account. Request throttling and tracked-shipment quotas are governed by the negotiated subscription rather than a public per-minute rate table. To avoid polling pressure, Portcast recommends registering a callback_url (Push API) so tracking updates are delivered as webhooks instead of repeated GET requests. Specific numeric rate limits are not publicly documented and are not reconciled in this artifact.

Portcast Rate Limits is the machine-readable rate-limit profile for Portcast on the APIs.io network, in the API Commons Rate Limits shape.

It captures 2 rate-limit definitions, measuring requests and shipments.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Supply Chain, Container Tracking, Logistics, Predictive ETA, and Ocean Freight.

2 Limits Exhausted: HTTP 429
Method: generated, dated 2026-06-21.
Written by API Evangelist on 2026-06-21 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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Supply ChainContainer TrackingLogisticsPredictive ETAOcean FreightRate LimitingQuotasThrottling

Limits

API Requests account
requests
see provider agreement
Per-account request throttling governed by subscription; not publicly published.
Tracked Shipments account
shipments
per subscription
Volume of concurrently tracked shipments/containers is set by the plan.

Policies

Push Over Poll
Register an HTTPS callback_url so updates arrive as webhooks instead of polling the tracking endpoints.
Backoff Strategy
Clients should implement exponential backoff with jitter and honor Retry-After on 429 responses.

Sources

Work with this as data

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Tools for rate limits

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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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Call it yourself

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

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