specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Castr
providerId: castr-live
created: '2026-07-11'
modified: '2026-07-11'
reconciled: false
tags:
- Live Streaming
- Video Hosting
- Rate Limiting
- Quotas
description: >-
  Castr does not publish fixed numeric request-rate limits for its REST API in
  the developer documentation. In practice the operative limits on a Castr
  account are the plan allowances - number of concurrent streams, number of
  multistream destinations, upfront (ingest) bandwidth, player (delivery)
  bandwidth, and video storage - rather than a per-minute API call cap. Sustained
  streaming and delivery are governed by those plan allowances; exceeding them
  requires upgrading the plan.
notes: >-
  No per-endpoint or per-minute numeric API request limit is documented as of the
  review date. Clients should implement retry-with-backoff and honor any
  Retry-After header on 429 responses. Verify plan allowances at
  https://castr.com/pricing/ and any documented API limits at
  https://developers.castr.com during reconciliation.
sources:
- https://developers.castr.com/docs/getting-started
- https://castr.com/pricing/
- https://developers.castr.com/reference/get_v2-live-streams
responseCodes:
  throttled: 429
limits:
- name: API Requests
  scope: account
  metric: requests
  limit: not published
  notes: No fixed numeric request-rate limit is documented for the REST API.
- name: Concurrent Streams
  scope: account
  metric: streams
  limit: per plan
  notes: Starter 2, Standard 2, Premium 5, Ultra 10, Events 15 (annual plans may add bonus concurrency).
- name: Multistream Destinations
  scope: stream
  metric: destinations
  limit: per plan
  notes: Number of simultaneous restream destinations, from 6 (Starter) up to 30 (Ultra/Events).
- name: Upfront Bandwidth
  scope: account
  metric: bytes
  limit: per plan
  notes: Ingest/multistream bandwidth allowance per billing period (2.4 TB Starter up to 150 TB Events).
- name: Player Bandwidth
  scope: account
  metric: bytes
  limit: per plan
  notes: Viewer-delivery bandwidth allowance per billing period (200 GB Starter up to 10 TB Events).
- name: Storage
  scope: account
  metric: bytes
  limit: per plan
  notes: Video hosting storage allowance (100 GB Starter up to 3 TB on top tiers).
policies:
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter and honor Retry-After on 429 responses.
- name: Plan-Bound Quotas
  description: The effective ceilings are plan concurrency, bandwidth, and storage allowances rather than an API request-rate cap; upgrade the plan to raise them.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com