generated: '2026-08-14'
method: searched
source: https://developer.regal.ai/reference/overview
limit_count: 8
response_headers: []
response_headers_note: >-
  Regal publishes NO rate-limit response headers — no X-RateLimit-*, no RateLimit-*, no
  Retry-After appears in any published OpenAPI response or docs page. Exhaustion is
  signalled only by HTTP 429 with a JSON body. A client has no runtime budget signal and
  must pace itself against the static documented limits below.
status_on_exhaustion: 429
rateLimits: 0.1
provider: regal-ai
description: >-
  Documented rate limits and concurrency policies for the Regal Events,
  Management, Messages, and Branded Phone Numbers APIs, plus the Reporting
  Webhooks delivery surface.
created: '2026-05-24'
modified: '2026-05-24'
sources:
  - https://developer.regal.ai/reference/overview
  - https://developer.regal.ai/reference/post-branded-phone-number
  - https://developer.regal.ai/reference/send-message
  - https://developer.regal.ai/docs/reporting-webhooks
  - https://developer.regal.ai/reference/list-users
  - https://developer.regal.ai/reference/get-user
  - https://developer.regal.ai/reference/call-handoff
  - https://developer.regal.ai/reference/branded-phone-numbers
policies:
  - id: events-ingest
    api: regal-events-api
    scope: per-tenant
    limit: 300
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      Custom Events ingest endpoint (events.regalvoice.com/events) is rate
      limited to 300 requests per second by default. Higher limits available
      on request to support@regal.ai.
  - id: branded-phone-numbers
    api: regal-branded-phone-numbers-api
    scope: per-tenant
    limit: 10
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      The Branded Phone Numbers endpoints (POST, PATCH, DELETE) are limited
      to 10 requests per second per tenant.
  - id: messages-send
    api: regal-messages-api
    scope: per-tenant
    limit: 10
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      The Messages send endpoint is limited to 10 requests per second per
      tenant.
  - id: management-listings
    api: regal-management-api
    scope: per-tenant
    limit: 10
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      Management API listing endpoints (businessProfiles, activePhoneNumbers,
      campaigns, dispositions) share the v1 management surface rate budget.
  - id: webhook-delivery-budget
    api: regal-reporting-webhooks
    scope: per-endpoint
    limit: 5
    unit: seconds
    window: per-event
    enforcement: drop
    description: >-
      Reporting Webhook receivers must respond within 5 seconds. There are no
      automatic retries; non-responding deliveries are dropped.
  - id: webhook-config-propagation
    api: regal-reporting-webhooks
    scope: tenant-config
    limit: 5
    unit: minutes
    window: per-change
    enforcement: cache
    description: >-
      Endpoint or event filter changes take up to 5 minutes to propagate due
      to caching.
  - id: users
    api: regal-ai-users-api
    scope: per-tenant
    limit: 10
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      GET /users and GET /users/{userIdOrEmail} are each documented at 10 requests per
      second. Exceeding returns 429 Rate Limit Exceeded.
  - id: call-handoffs
    api: regal-ai-call-handoffs-api
    scope: per-tenant
    limit: 10
    unit: requests
    window: 1s
    enforcement: 429
    description: >-
      GET /callHandoffs/{callKey} is documented at 10 requests per second. Exceeding
      returns 429 Rate Limit Exceeded.