Zitadel · Rate Limits

Zitadel Rate Limits

ZITADEL Cloud applies IP-oriented rate limits, with separate ceilings for the login / register / reset UI paths and for all other gRPC / REST / OAuth API endpoints. DDoS mitigation is layered on top, so simply rotating IPs to evade limits can lead to blocking. Self-hosted ZITADEL has no enforced ceiling.

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

It captures 2 rate-limit definitions, measuring requests_per_second.

The profile also includes 4 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Authentication, Authorization, Identity Management, and Rate Limiting.

2 Limits Throttle: 429
AuthenticationAuthorizationIdentity ManagementRate Limiting

Limits

UI paths (/ui/* — Login, Register, Reset) IP
requests_per_second · second
10
Steady-state limit; bursts up to 15 req/s tolerated (3-minute burst window).
gRPC / REST / OAuth APIs (all other paths) IP
requests_per_second · second
50
Steady-state and burst both 50 req/s.

Policies

IP-oriented limiting
Rate limits are bound to the source IP address; ZITADEL Cloud sits behind DDoS mitigation that may block IPs that try to evade limits by rotating.
429 + exponential backoff
When throttled the API returns HTTP 429; clients should implement exponential backoff with jitter rather than tight retry loops.
Shared-IP accommodation
Customers behind corporate proxies / NAT can request limit adjustments via support@zitadel.com.
Load testing requires advance notice
Load testing requires at least two weeks advance notice via support@zitadel.com; unauthorized load testing risks DDoS flagging and service termination.

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

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