Microsoft Azure Communication Services · Rate Limits

Microsoft Azure Communication Services Rate Limits

Microsoft Azure Communication Services Rate Limits is the rate-limit profile for Microsoft Azure Communication Services on the APIs.io network — every limit transcribed verbatim from the provider’s own documentation on 2026-11-05.

It captures 24 rate-limit definitions, including Purchase phone number — Purchase phone number Azure tenant - 1; Search for phone numbers — Search for phone numbers Azure tenant One week 5; Create identity — Create identity 30 1.

Limit state is signalled in the Retry-After response header.

Tagged areas include Microsoft Azure, CPaaS, Calling, Chat, and Communications.

24 Limits Retry-After
Transcribed from the provider's documentation on 2026-11-05 — learn.microsoft.com/en-us/azure/communication-services/co....
View Source
Microsoft AzureCPaaSCallingChatCommunicationsContact CenterEmailIdentityMessagingPhone NumbersRoomsRoutingSIPSMSTelephonyTokensVideoVoiceWhatsApp

Limits

Purchase phone number Azure tenant
Purchase phone number Azure tenant - 1
PhoneNumbers
Search for phone numbers Azure tenant
Search for phone numbers Azure tenant One week 5
· per 1 week
Create identity resource
Create identity 30 1
· per 30 seconds
Delete identity resource
Delete identity 30 500
· per 30 seconds
Issue access token resource
Issue access token 30 1
· per 30 seconds
Revoke access token resource
Revoke access token 30 500
· per 30 seconds
Send SMS (toll-free) per number
Send message Toll-free Per number 60 200 200
· per 60 seconds
Send SMS (short code) per number
Send message Short code Per number 60 6000 6000
· per 60 seconds
Send SMS (alphanumeric sender ID) per resource
Send message Alphanumeric sender ID Per resource 60 600 600
· per 60 seconds
Send Email (custom domain per subscriptioncustom domain
Send Email Per Subscription 1 30 Yes
· per 1 minute
Send Email (custom domain per subscriptioncustom domain
Send Email Per Subscription 60 100 Yes
· per 60 minutes
Get Email Status (custom domain per subscriptioncustom domain
Get Email Status Per Subscription 1 60 Yes
· per 1 minute
Get Email Status (custom domain per subscriptioncustom domain
Get Email Status Per Subscription 60 200 Yes
· per 60 minutes
Send Email (Azure managed domain per subscriptionAzure managed domain
Send Email Per Subscription 1 5 No
· per 1 minute
Send Email (Azure managed domain per subscriptionAzure managed domain
Send Email Per Subscription 60 10 No
· per 60 minutes
Create chat thread (per user) per user
Create chat thread Per user 10 -
· per 10 seconds
Create chat thread (per resource) per resource
Create chat thread Per resource - 3000
· per 1 minute
Send per chat thread
Send message
· per 10 seconds
Default outbound concurrent PSTN calls per number
Default number of outbound concurrent calls Per number 2
Create Room resource id
Create Room 20 req/sec
· per 1 second
Get Room resource id
Get Room 40 req/sec
· per 1 second
List Rooms resource id
List Rooms 10 req/sec
· per 1 second
Job Router general requests per resource
General requests Per resource 10 3
· per 10 seconds
Job Router Get Jobs per resource
Get Jobs (Route-Level Throttling) Per resource 10 332 5
· per 10 seconds

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/microsoft-azure-communication-services-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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