generated: '2026-07-18'
method: searched
source: https://arch.co/client-api/api-docs/
note: >-
  The Arch Client API is rate limited, measured in requests per minute. Exceeding
  the limit returns HTTP 429 Too Many Requests. Current limit status is exposed on
  standard RateLimit-* response headers on every request. Exact numeric limits are
  provisioned per API user and are not published; inspect the headers to read them.
enforcement:
  status_code: 429
  status_reason: Too Many Requests
  window: per-minute
signaling:
  style: response-headers
  headers:
  - name: RateLimit-Policy
    description: Max number of requests allowed over a specified window. Format "[requests];w=[window seconds]".
  - name: RateLimit-Limit
    description: Max number of requests allowed over the current window. Format "[requests]".
  - name: RateLimit-Remaining
    description: Remaining requests allowed over the current window. Format "[requests]".
  - name: RateLimit-Reset
    description: Seconds remaining until the current window resets.
guidance: Space out requests; on 429 back off and honor RateLimit-Reset before retrying.
rate_limits:
- name: default
  scope: per-api-user
  window: 60
  window_unit: seconds
  limit_count: null
  note: Numeric limit provisioned per user; not published — read from RateLimit-Limit header.