generated: '2026-08-01'
method: searched
source: >-
  https://developer.lucid.co/reference/rate-limits, openapi/lucid-data-api-openapi.yml#getRateLimits,
  openapi/lucid-rest-api-openapi.yml (429 response descriptions)
rate_limits:
- api: Lucid Data API
  name: User API rate
  limit_count: 750
  limit_unit: requests
  limit_interval: minute
  scope: user
  source: https://developer.lucid.co/reference/rate-limits
- api: Lucid Data API
  name: Hard refresh interval
  limit_count: 30
  limit_unit: seconds
  limit_interval: since last hard (full) refresh
  scope: user
  source: openapi/lucid-data-api-openapi.yml#getRateLimits
- api: Lucid Data API
  name: Soft refresh interval
  limit_count: 30
  limit_unit: seconds
  limit_interval: since last soft (incremental) refresh
  scope: user
  source: openapi/lucid-data-api-openapi.yml#getRateLimits
- api: Lucid Data API
  name: File size limit
  limit_count: 3
  limit_unit: megabytes
  limit_interval: per upload
  scope: request
  source: openapi/lucid-data-api-openapi.yml#getRateLimits
- api: Lucid REST API
  name: Document search
  limit_count: 300
  limit_unit: requests
  limit_interval: 5 seconds
  scope: account
  source: openapi/lucid-rest-api-openapi.yml#searchDocuments (429 response description)
introspection:
  operation: openapi/lucid-data-api-openapi.yml#getRateLimits
  path: GET https://data.lucid.app/rateLimits
  returns: [userHardRefreshInterval, userSoftRefreshInterval, userApiCallRate, fileSizeLimit]
  note: Lucid exposes the caller's live limits as an API call — rare and worth crediting.
response:
  status_code: 429
  headers_published: false
  retry_after: false
  note: >-
    No X-RateLimit-*/RateLimit-*/Retry-After response headers are documented or declared in any
    spec. Clients must back off blind.
x-evidence:
  fetched: '2026-08-01'
  url: https://developer.lucid.co/reference/rate-limits
  http_status: 200