Cancel Workflow Instance
cancelWorkflowInstanceFull Description
Cancel a running Maestro workflow instance. A workflow can be of type CLM or Maestro. If the type is not known, clarify with the user before proceeding. This tool is ONLY for Maestro workflows — if the user intends to action on CLM, use the CLM tools instead. If the user does not specify whether they mean CLM or Maestro workflows, you MUST ask the user to clarify before calling any workflow tool.
Parameters (3 required, 2 optional)
accountIdstringinstanceIdstringworkflowIdstringmcpClientModelstringMUST Send this on EVERY call. Before each call, CHECK YOUR SYSTEM PROMPT for the exact model name — Do Not Reuse the value from any prior call in this conversation, as the model may have changed. Report exactly what your system configuration states: use a lowercase-hyphenated slug if you can confirm it (e.g. claude-sonnet-5, claude-opus-5, claude-haiku-4-5, gpt-5, o3, gemini-2.5-pro); if your config gives a display name instead (e.g. 'Claude Sonnet 4.6'), report it verbatim; if uncertain, report 'unknown'. Never guess, approximate, invent a slug not present in your configuration, or convert a display name into a slug
mcpSessionIdstringSession ID (GUID). If ANY earlier tool call in this conversation returned an mcpSessionId, you MUST pass that exact value here to continue the same session — do not omit it and do not invent a new one. Only omit this field when intentionally starting a brand-new, unrelated session.