# List Temporal Cloud namespaces

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

List namespaces in the connected account. One page per call; map limit→pageSize and cursor→pageToken.

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

## Risk and exposure

- Risk: Read
- Idempotency: Safe — Safe to retry without coordination; repeats do not create additional side effects.
- Availability: Default
- Exposure: REST, SDK, MCP
- MCP hints: readOnly=true, destructive=false, idempotent=true, openWorld=true

## Required scopes

None.

## Input schema fields

- `limit`
- `cursor`
- `name`
- `project_id`

## Output schema fields

- `namespaces`
- `namespaces[]`
- `namespaces[].namespace`
- `namespaces[].name`
- `namespaces[].project_id`
- `namespaces[].state`
- `namespaces[].resource_version`
- `namespaces[].retention_days`
- `namespaces[].active_region`
- `namespaces[].async_operation_id`
- `namespaces[].created_at`
- `namespaces[].updated_at`
- `namespaces[].enable_delete_protection`
- `namespaces[].api_key_auth_enabled`
- `namespaces[].mtls_auth_enabled`
- `namespaces[].endpoints`
- `namespaces[].endpoints.web_address`
- `namespaces[].endpoints.grpc_address`
- `namespaces[].endpoints.mtls_grpc_address`
- `namespaces[].replicas`
- `namespaces[].replicas[]`
- `namespaces[].replicas[].id`
- `namespaces[].replicas[].region`
- `namespaces[].replicas[].is_primary`
- `namespaces[].replicas[].state`
- `namespaces[].tags`
- `namespaces[].tags[]`
- `namespaces[].tags[].key`
- `namespaces[].tags[].value`
- `next_cursor`

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.list
Deployment-effective discovery: https://api.fuse.init.inc/v1/tenants/%7Btenant_id%7D/providers/temporal/actions