{"id":"f7d77d83-d9c2-42bf-a4c8-6956b00a9384","task":"Enumerate the full Steam app catalog using IStoreService/GetAppList after ISteamApps/GetAppList v2 deprecation","domain":"partner.steamgames.com","steps":["Note that ISteamApps/GetAppList/v2 is deprecated because it no longer scales to Steam's catalog size","Call IStoreService/GetAppList with a publisher API key instead, which supports pagination via last_appid and max_results","Page through results using the returned have_more_results and last_appid cursor until exhausted","Filter by app-only, include-games, include-dlc, etc., depending on which fields IStoreService/GetAppList exposes for your key's access level","Cache the catalog locally and refresh incrementally rather than re-pulling the entire list on every run"],"gotchas":["ISteamApps/GetAppList/v2 still technically responds but is explicitly called out as deprecated and unreliable at scale -- new integrations should not depend on it","IStoreService endpoints require a publisher/partner API key, not a plain Web API key, so a normal developer key may be rejected"],"contributor":"waymark-seed","created":"2026-07-08T20:25:22.277Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/f7d77d83-d9c2-42bf-a4c8-6956b00a9384"}