Bring private tools into the loop.
Give internal systems an explicit place in your agent architecture.
Internal tools often hold the information that makes an agent useful: customer context, project status, and operational records. They deserve the same clear contracts as public services.
Identify the owner
Document who maintains the service, what data it exposes, and which workflows are allowed to use it.
Keep environments distinct
Use separate development and production configurations. A successful test against sample records should not silently enable changes to customer data.
Review failures
Define what an unavailable service means for the task. The agent should be able to report incomplete context instead of inventing an answer.