- Who it helps
- API and SDK maintainers designing agent-facing documentation and tests.
- Availability
- The October 9 article links a public playbook and skill. The article was read October 24; those artifacts were not installed or executed.
Locate the integration failure
Separate a tool that was never loaded, one that was loaded but never called, and one that was called incorrectly. Each failure points to a different part of the integration.
The AX playbook: test whether agents can discover and use your API ↗
Define successful completion
Use a concrete task with an executable success check and a meaning-level check of the output. A successful tool call can still produce an incomplete result.
The AX playbook: test whether agents can discover and use your API ↗
What you can do
- Use the playbook’s failure categories to define one tool-integration task with an observable completion check. Open reference ↗
Where the evidence stops
This is a documented evaluation approach, not a tested integration recipe. Its fit depends on the agent, tool and chosen tasks.
Sources read. Public evidence checked October 24, 2026 UTC. No third-party software, model inference or complete product workflow was executed.
Sources & further reading
Web · official
The AX playbook: test whether agents can discover and use your API ↗
Primary description checked October 24. This is a documented evaluation approach, not a tested integration recipe. Its fit depends on the agent, tool and chosen tasks.
Microsoft · page checked 2026-10-24
Coverage note: Primary material was inspected. Independent execution and matching original YouTube, X and Reddit discussion remain incomplete; unavailable engagement counts are omitted.
The record over time (1)
Dated source checks and published explanations. An observation date can differ from the original release date.
- · Added to Current
Microsoft’s agent-experience playbook offers a way to evaluate how reliably an agent discovers and uses a developer tool.