Stackmark

Each tool has a clearly readable purpose: detail lookup, category overview, keyword search, and nearest-neighbor discovery. The only real overlap is that get_listing's output already includes similar listings, which can make similar_listings feel partially redundant, but the dedicated tool still offers a focused alternative-finding path.

Three of four tools follow a clean verb_noun snake_case pattern (get_listing, list_categories, search_listings). similar_listings drops the verb and reads as a noun phrase, a minor but noticeable deviation in an otherwise tight set.

Four tools is a small but well-matched surface for a read-only catalog of AI building blocks: discover by search, browse by category, inspect details, and find alternatives. Nothing feels padded, though it sits at the thin end of the ideal range.

The browse-discover-inspect-alternatives lifecycle is fully covered with no dead ends, since search returns IDs that feed directly into get_listing. Gaps are minor: no way to list all listings/apply broader filters (license, source, popularity) without a keyword.