OpenStack · Rate Limits

Openstack Rate Limits

OpenStack does not enforce a global rate limit. Each operator configures per-tenant quotas (Nova, Cinder, Neutron) and optional API rate limits via the api-paste.ini middleware (e.g. RateLimit filter). Public-cloud OpenStack providers publish their own per-account API rate limits in their respective documentation.

Openstack Rate Limits is the machine-readable rate-limit profile for OpenStack on the APIs.io network, in the API Commons Rate Limits shape.

It captures 2 rate-limit definitions, measuring varies.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled, overLimit, and forbidden.

Tagged areas include Cloud Platform, Infrastructure as a Service, Open Source, and Rate Limiting.

2 Limits Exhausted: HTTP 429
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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Cloud PlatformInfrastructure as a ServiceOpen SourceRate Limiting

Limits

Per-tenant quotas (Nova / Neutron / Cinder) tenant
varies
see operator-configured quotas
Quotas bound resource counts (instances, volumes, networks), not request frequency.
API rate limits (operator-configured) tenant
varies
see api-paste.ini RateLimit middleware
Optional middleware; defaults vary by deployment.

Policies

Operator-controlled
All rate limiting and quota enforcement is set by the cloud operator. Public OpenStack cloud providers (OVH, Rackspace, etc.) publish their own values.
Backoff
Honor 429 / 413 (Over Limit) responses; exponential backoff with jitter is the recommended client behavior.
Quota vs rate
OpenStack quotas (instance count, vCPU count) are admission controls; rate limits are a separate middleware concern.

Sources

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

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