Each tool targets a distinct stage or resource in the purchase flow: catalog search vs. single product lookup vs. category listing, and the propose_purchase/place_order split cleanly separates approval from execution. No two tools overlap in purpose, so an agent can select correctly with confidence.

Uniform verb_noun snake_case throughout (search_catalog, get_product, list_missions, place_order, verify_audit_log, etc.). The convention is predictable and consistent with no mixed styles.

Ten tools is well-scoped for a constrained purchasing agent, covering discovery, approval, execution, and audit. Every tool earns its place without redundancy.

The surface covers the full purchase lifecycle (search, inspect, mission constraints, propose, order, lookup, audit) with no dead ends in the core flow. Minor gaps exist—no order cancellation or mission management—but these may be intentionally out of scope since missions are externally signed.