1. A live diagnostic task
The task
Unit AC-250-S serial AC25041872 at Immingham Depot: discharge temperature climbs above the trip point under sustained load and the machine shuts down after about 20 minutes at full load. Diagnose it, identify the correct replacement part for this exact variant, and cite the manual procedure.
The answer key — fault F-101, part
AC-THE-1006S — is a property of the generated corpus: one
variant-specific remedy part exists per fault. The agent never sees it, and the grading
below is a string comparison, not a judgement.
Outcome
| Checked against the answer key | Result |
|---|---|
| Fault code identified | no F-101 |
| Variant-specific part number | no AC-THE-1006S |
| End to end | no |
| Distinct tools called | 0 — |
| Wall clock | 266 ms |
| Trace | 62ccf6392fd4460a |
Answer
The run, step by step
Each plan step shows the tool the planner chose and the scores of the runners-up. Each tool step shows exactly what was sent and what came back over MCP.
Three servers, one task
The three tools live on three separate MCP endpoints with separate identities and separate tool namespaces. The agent's client reached each over HTTP POST with the headers this protocol revision requires.
| Endpoint | Server identity | Tools |
|---|---|---|
/mcp/tickets | atlas.field-service.tickets | export_service_records, get_ticket, post_ticket_update, search_tickets |
/mcp/parts | atlas.field-service.parts | check_availability, find_part, raise_parts_order |
/mcp/manuals | atlas.field-service.manuals | search_manual |
Demo4/pipeline/.