generated: '2026-07-18'
method: searched
source: docs.arcprize.org (rest_overview, rate_limits, api-keys) + openapi
auth:
  style: api-key-header
  header: X-API-Key
  anonymous_key: true
  registration: https://arcprize.org/platform
  ref: authentication/arc-prize-foundation-authentication.yml
content_type:
  request: application/json
  response: application/json
session_affinity:
  required: true
  mechanism: cookies
  detail: >-
    Games are stateful. The server sets AWSALB* load-balancer cookies that must
    be included on all subsequent requests within the same game session so they
    route to the correct backend instance. Session continuity across RESET/ACTION
    calls is carried by the `guid` returned from RESET.
idempotency:
  supported: false
  detail: No Idempotency-Key header or idempotent-retry semantics are documented.
pagination:
  supported: false
  detail: listGames returns a flat array ordered alphabetically by title; no paging params.
error_envelope:
  fields:
  - error
  - message
  format: custom-json
  ref: errors/arc-prize-foundation-problem-types.yml
rate_limiting:
  limit_rpm: 600
  exceeded_status: 429
  exceeded_code: RATE_LIMIT_EXCEEDED
  headers: none-documented
  ref: lifecycle/arc-prize-foundation-lifecycle.yml
versioning:
  scheme: path-and-file
  current: '1.0.0'
  ref: lifecycle/arc-prize-foundation-lifecycle.yml
field_conventions:
  reasoning_field_max: 16 KB
  action6_coordinate_range: 0-63 (x and y)
  ids:
  - game_id
  - guid
  - card_id