Advanced tool use: chaining multiple AI tools cleanly

One tool works. Ten tools in an agent is where it gets interesting — and fragile.

Key patterns

• Hierarchy of tools — composite calls over granular ones.
• Domain routing for large catalogs.
• Parallel calls for independent lookups.
• Verify-and-confirm for irreversible actions.
• Observability on every tool call.
• Explicit undo tools.