Payment Failure Diagnosis

Look up the payment failure, decode the error, and recommend the fix. Uses ZohoBilling_Search_Error_Categories — the most underutilised tool in the MCP.

Step 1 — Resolve the subject

If $ARGUMENTS is a customer name:

• ZohoBilling_Search_Customers with search_text: $ARGUMENTS → get customer_id
• ZohoBilling_List_all_Subscriptions with customer_id, filter_by: SubscriptionStatus.PAST_DUE

If $ARGUMENTS looks like an error code or error name:

• ZohoBilling_Search_Error_Categories with search_text: $ARGUMENTS → get error details

If $ARGUMENTS is empty: ask "Which customer or subscription should I diagnose?"

Step 2 — Get failure details (run in parallel after Step 1)