# Limits - Temporal Nexus

> Learn about Nexus limits including rate limits, the maximum number of Endpoints, and handler request timeouts.

Nexus limits are documented in [Temporal Cloud limits](/cloud/limits):

- [Nexus rate limits](/cloud/limits#nexus-rate-limits) - Nexus requests count toward the Namespace RPS limit.
- [Nexus Endpoint limits](/cloud/limits#nexus-endpoints-limits) - 100 Endpoints per Account (default).
- [Per-Workflow Nexus Operation limits](/cloud/limits#per-workflow-nexus-operation-limits) - 30 in-flight Operations per Workflow.
- [Nexus Operation request timeout](/cloud/limits#nexus-operation-request-timeout) - Less than 10 seconds for a handler to process a start or cancel request.
- [Nexus Operation duration limits](/cloud/limits#nexus-operation-duration-limits) - 60-day maximum ScheduleToClose duration.
- [Per-Workflow callback limits](/cloud/limits#per-workflow-callback-limits) - 2000 callbacks per Workflow. Governs how many Nexus callers can attach to a handler Workflow.