search_reference and get_signature both target function lookups and could be confused at the margins, but the multi-match search vs. single exact-signature semantics are described clearly. explain_code is entirely distinct, targeting return codes and runtime errors.

All three tools use a consistent snake_case verb_noun pattern (search_reference, get_signature, explain_code) with clear, predictable action verbs. No mixing of conventions or styles.

Three focused tools is on the lean side but each earns its place covering search, lookup, and error decoding. Slightly thin for a documentation server that could also expose browsing or content retrieval.

Search, signature lookup, and error explanation are covered, but there is no way to retrieve full documentation text, code examples, or enumerate functions within a section. These gaps force agents to rely only on signatures and external links.