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: Acast
providerId: acast
created: '2026-07-05'
modified: '2026-07-05'
reconciled: false
tags:
- Podcasting
- Publishing
- Rate Limiting
- Quotas
description: >-
  The Acast Publishing API documents a single published rate limit of 60
  requests per minute. Beyond the request-rate cap, episode creation is bounded
  by a maximum audio file size of 150 MB (MP3 recommended at 128 kbps). API keys
  are scoped to a user and only reach the shows assigned to that user, which
  further bounds the data any single key can act on.
notes: >-
  60 requests/minute is the only numeric request-rate limit Acast publishes.
  Per-account or per-endpoint burst behavior and throttling response codes are
  not documented in detail; assume standard 429 handling. Verify against the
  live developer portal during reconciliation.
sources:
- https://developers.acast.com/
- https://learn.acast.com/en/articles/5790019-acast-publishing-api
responseCodes:
  throttled: 429
limits:
- name: Publishing API Requests
  scope: user
  metric: requests
  limit: 60 per minute
  notes: The documented rate limit across the Publishing API.
- name: Episode Audio Upload Size
  scope: request
  metric: bytes
  limit: 150 MB maximum per audio file
  notes: MP3 format recommended at 128 kbps.
- name: Show Access Scope
  scope: user
  metric: shows
  limit: shows assigned to the API key's user
  notes: API keys are user-level; they cannot reach shows not assigned to that user.
policies:
- name: Backoff Strategy
  description: On a 429 response, back off and retry with exponential backoff and jitter, staying under 60 requests per minute.
- name: User-Scoped Keys
  description: Keys are issued per user by Acast customer success and are limited to that user's assigned shows.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com