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: Fly.io
providerId: fly-io
created: '2026-05-04'
# Provenance stamped 2026-08-11: this artifact was written by the API Evangelist
# bulk sweep dated 2026-05-04, not harvested from the provider. See roadmap#35.
method: generated
modified: '2026-05-04'
reconciled: true
tags:
  - Rate Limiting
  - Hosting
description: Fly.io Machines API and CLI rate limits per organization.
sources:
  - https://fly.io/docs/about/pricing/
  - https://fly.io/docs/machines/api/working-with-machines-api/
headers:
  retryAfter: Retry-After
responseCodes:
  throttled: 429
limits:
  - name: Machines API
    scope: org
    metric: requests_per_minute
    limit: default; raise via support
  - name: Machines per app
    scope: app
    metric: machines
    limit: varies by org limits
  - name: Concurrent machine starts
    scope: org
    metric: concurrent
    limit: varies