# Create Temporal Cloud namespace

Canonical URL: https://docs.fuse.init.inc/integrations/temporal/actions/namespaces.create

Create a one-region, API-key-enabled namespace. Returns an async operation handle immediately. Maps the Fuse idempotency key to asyncOperationId.

Action ID: `namespaces.create`
Provider: Temporal (`temporal`)
Contract version: 1

## Risk and exposure

- Risk: Write
- Idempotency: Provider key — Retries are safe when the provider-supported idempotency key is supplied.
- Availability: Default
- Exposure: REST, SDK
- MCP hints: readOnly=false, destructive=false, idempotent=true, openWorld=true

## Required scopes

None.

## Input schema fields

- `name`
- `region`
- `retention_days`
- `project_id`
- `enable_delete_protection`

## Output schema fields

- `namespace`
- `operation`
- `operation.id`
- `operation.state`
- `operation.operation_type`
- `operation.check_after`
- `operation.started_at`
- `operation.finished_at`
- `operation.failure_reason`

Provider overview: https://docs.fuse.init.inc/integrations/temporal
Actions index: https://docs.fuse.init.inc/integrations/temporal/actions
Exact canonical JSON contract: https://docs.fuse.init.inc/api/catalog/v1/providers/temporal/actions/namespaces.create
Deployment-effective discovery: https://api.fuse.init.inc/v1/tenants/%7Btenant_id%7D/providers/temporal/actions