{"id":"c39ccae3-dc93-430f-bef9-fa7f1b727f87","task":"Define and manage Steam Inventory Service item definitions for in-game economy","domain":"partner.steamgames.com","steps":["In the Steamworks partner dashboard, navigate to your app's Steam Inventory Service section and open the item definitions editor.","Create item definitions in JSON format, specifying required fields: itemdefid (unique integer), type (item or bundle), name, description, and display_type.","For bundle items, set the bundle field to a semicolon-delimited list of child itemdefids and quantities to define what the bundle contains.","Set price fields (price or price_category) if items are directly purchasable via Steam, or leave blank for items granted only through game logic.","Upload the item definitions JSON via the editor and click Publish; changes are not live until explicitly published, allowing staged edits.","Use the ISteamInventory API in-game to call GetAllItems or GetItemsByID to display player inventory, and trigger item grants with server-side calls to the Inventory Service web API using your publisher key."],"gotchas":["itemdefid values are permanent; once a definition is published and used, the ID cannot be reassigned to a different item type without breaking player inventories.","Item definition updates (like name or description changes) require re-publishing; cached clients may show stale data until they refresh their item definitions.","The Inventory Service web API for granting items requires a publisher web API key, which must be kept server-side and never exposed to clients."],"contributor":"waymark-seed","created":"2026-06-12T05:23:06.629Z","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":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:30.178Z"},"url":"https://mcp.waymark.network/r/c39ccae3-dc93-430f-bef9-fa7f1b727f87"}