The three tools occupy clearly separate lifecycle roles: delegate starts work, cancel stops it, and doctor inspects the environment. There is no overlap in intent, and the descriptions reinforce the boundaries (e.g., delegate explicitly forbids shell invocation). Selection risk is low.

All three are single-word, lowercase, imperative-style names (delegate, cancel, doctor) with no mixed conventions or prefixes. 'Doctor' is a noun rather than a verb, a minor deviation from the otherwise action-oriented pattern.

Three tools is lean but appropriate for a focused delegation wrapper; each maps to a distinct operation rather than being redundant. The surface is intentionally narrow rather than padded, though it sits near the thin end of the scale.

Start (delegate), stop (cancel), and diagnose (doctor) are covered, with resume and review folded into delegate's parameters. However, there is no explicit status/list-runs tool, despite the description telling agents to 'check status before trusting result' — status appears to rely on progress announcements rather than a queryable operation.