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Read only Returns the ACTIVE workflows that dial through this phone number. Call it BEFORE proposing delete_phone_number or reassigning a number, so the user knows what stops working — releasing a number that a live workflow calls through breaks that workflow mid-run. An empty list means nothing active depends on it. Paused workflows are deliberately excluded: they are not blocking.

Parameters

Complete input schema

Registered output schema

Before you call

  • Connect and initialize the MCP client with OAuth or an API key for the intended workspace.
  • Provide the required parameters: phone_number_id.

Example MCP request

Send tools/call after your client completes MCP initialization. Replace placeholder values with IDs and inputs from your workspace. For object and array parameters, follow the nested requirements in the parameter description instead of treating an empty value as complete.
Successful results include structuredContent and a text content block containing the same JSON. Check isError first, then read structuredContent or parse content[0].text. See MCP responses and errors for the full envelope and failure behavior.

Verify the result

Confirm the response is not marked isError, parse content[0].text as JSON, and verify that returned IDs and workspace data match the request.

Retry safety

This tool does not change workspace data. Retrying after a transient transport failure is safe.