Microsoft Office 365 · Rate Limits

Microsoft Office 365 Rate Limits

Microsoft Office 365 / Microsoft 365 programmatic access is provided through Microsoft Graph, Exchange Web Services, and the legacy Outlook REST API. The dominant throttling regime is the Microsoft Graph per-app-per-tenant and per-app-across-all-tenants quotas, with a global ceiling of 130,000 requests per 10 seconds per app. Each Office 365 service (Exchange, SharePoint / OneDrive, Teams, Excel) has its own service-specific quota.

Microsoft Office 365 Rate Limits is the machine-readable rate-limit profile for Microsoft Office 365 on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 8 rate-limit definitions, measuring requests_per_10_seconds, requests_per_15_seconds, requests_per_30_seconds, requests_per_5_minutes, and varies.

The profile also includes 5 backoff/retry policies defined and response codes documented for throttled and serviceUnavailable.

Tagged areas include Rate Limiting, Microsoft 365, Microsoft Graph, and Microsoft.

8 Limits Throttle: 429
Rate LimitingMicrosoft 365Microsoft GraphMicrosoft

Limits

Microsoft Graph global ceiling application
requests_per_10_seconds · second
130000
Excel — per app/tenant app/tenant
requests_per_10_seconds · second
1500
Excel — per app across tenants application
requests_per_10_seconds · second
5000
Teams Calls per app/tenant app/tenant
requests_per_15_seconds · second
50000
Teams Presence per app/tenant app/tenant
requests_per_30_seconds · second
10000
Exchange Message Trace tenant
requests_per_5_minutes · minute
100
SharePoint / OneDrive app/tenant
varies
see SharePoint Online throttling guidance — no fixed numeric per-app per-second quota published
Identity & Access (read) per app/tenant app/tenant
resource_units_per_10_seconds · second
3500–8000 RU per 10s based on tenant size

Policies

Backoff Strategy
Honour Retry-After on 429 / 503; the Microsoft Graph SDK handlers do this by default.
Use change notifications
Subscribe to change notifications instead of polling.
Use $batch
Combine up to 20 requests in a single $batch envelope.
Service-specific guidance
SharePoint / OneDrive throttling is handled separately by the SharePoint Online service; always implement client-side backoff and avoid generic User-Agent strings.
Microsoft Graph Data Connect for bulk
For tenant-scale exports, use Data Connect to bypass REST throttling.

Sources

Work with this as data

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

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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-office-365-rate-limits"
All rate limits
curl "https://apis.io/api/v1/rate-limits?limit=25"

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