THE MAIN TOOL. Recommend games matching a stated preference, ranked against what the player actually plays. Describe the mood in preference (e.g. 'something cosy for winding down', 'punishing tactical shooter', 'a management sim I can sink 100 hours into'). Optionally pin exact tags. Already-owned and wishlisted games are excluded by default. Returns candidates with a 0-100 match score, the tags that earned it, and caveats. The list is ordered for variety as well as score, so a lower score can sit above a higher one. Without a Steam API key it still works, ranking on the stated preference alone.

Derive what a player actually likes from their library: tag affinities weighted by playtime, top genres, signature games, and titles they bounced off. Use this to explain or sanity-check a recommendation, or to answer 'what kind of games am I into'. Requires a Steam API key.

Search the Steam store with structured filters and return full details for each hit. Use when you want raw discovery without any personalised ranking; recommend_games is usually the better starting point. Keyless.

Full detail for one or more games by appid: description, genres, community tags, price, reviews, Metacritic, platforms, estimated owners, and optionally Steam Deck compatibility. Keyless.

Find games resembling one or more you name: 'more like Hades', 'something between Factorio and Rimworld'. Takes the seed games' dominant community tags and searches on them, scoring hits by tag overlap. Keyless, but personalises when a key is available.

Score breakdown plus the text of the most helpful reviews for one game. Use this to judge whether a game actually delivers on a specific preference (pacing, difficulty, story, how well it runs), which tags alone cannot tell you. Keyless.

Search Steam's official tag vocabulary. Call this before recommend_games or search_games when you are unsure a tag exists or what it is called: 'roguelite' and 'Rogue-lite' are different strings and only one is real. Keyless.

The player's owned games with hours played, most-played first. Requires a Steam API key and a profile whose game details are public.

The player's Steam wishlist, with current price and review data for each entry. A strong signal of stated intent, and useful for spotting what is on sale right now. Works without a key when the profile is public.

What the player has actually played in the last two weeks. The best read on current mood, as opposed to the lifetime habits get_taste_profile describes. Requires a Steam API key.