Steam MCP Server

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Batch store card for many games

get_items

Read-only

Retrieve pricing, discounts, review scores, hardware compatibility, and popular tags for multiple Steam games in one keyless call—ideal for wishlist or library checks.

Instructions

Get price/discount, review % (positive), hardware compatibility, popular user tags and release date for a LIST of games by appid in ONE keyless call. The efficient way to price-, rating-, tag- and compat-check a wishlist or library without a request per game. For a bigger batch (up to 250 appids) when you only need price, use get_prices instead. An unknown/invalid appid comes back as its own row marked available:false (never dropped from the list), same as get_prices. Each item carries four compatibility fields, each verified/playable/unsupported/unknown: steam_deck (Steam Deck), steam_os (SteamOS in general), steam_machine (the Steam Machine console specifically), and steam_frame (Steam Frame VR headset); a vr_support flag (none/supported/required — distinct from steam_frame, which is a Steam Frame HARDWARE compat rating, not whether the game itself has a VR mode); a tags list (top user tags like 'Roguelike', 'Souls-like', most-relevant first); a clickable store_url to the game's Steam page; and, when on sale, discount_end (ISO UTC time the discount expires — for 'how long is this deal valid'). To find NEW games by filter (discount, rating, tags, compat) instead of pricing a list you already have, use discover_games instead. Get appids from search_games / get_wishlist / get_owned_games.

Input Schema

TableJSON Schema

Name	Required	Description
`appids`	Yes	Steam appids (1-50). Split a longer list across calls.
`country`	No	Country (cc) for prices/currency; overrides STEAM_COUNTRY for this call.
`language`	No	Store language (e.g. english, russian); overrides STEAM_LANGUAGE for this call.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`count`	Yes
`items`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedv0.13.1Aug 17, 2026

changedInput schema / properties / appids / description

Previous value: -"Steam appids (1-100)."New value: +"Steam appids (1-50). Split a longer list across calls."

changedInput schema / properties / appids / maxItems
```
Previous value: -100New value: +50
```

changedOutput schema / properties / items / items / anyOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "appid": {
-        "type": "number"
-      },
-      "available": {
-        "const": false,
-        "type": "boolean"
-      }
-    },
-    "required": [
-      "appid",
-      "available"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "appid": {
-        "type": "number"
-      },
-      "coming_soon": {
-        "type": "boolean"
-      },
-      "is_free": {
-        "type": "boolean"
-      },
-      "name": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "platforms": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "price": {
-        "anyOf": [
-          {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "discount_end": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
-                  "discount_pct": {
-                    "type": "number"
-                  },
-                  "final": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
-                  "original": {
-                    "anyOf": [
-                      {
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  }
-                },
-                "required": [
-                  "discount_pct",
-                  "discount_end",
-                  "final",
-                  "original"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "is_free": {
-                    "const": true,
-                    "type": "boolean"
-                  }
-                },
-                "required": [
-                  "is_free"
-                ],
-                "type": "object"
-              }
-            ]
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "release_date": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "review_count": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "review_label": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "review_percent": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "steam_deck": {
-        "enum": [
-          "unknown",
-          "unsupported",
-          "playable",
-          "verified"
-        ],
-        "type": "string"
-      },
-      "steam_frame": {
-        "enum": [
-          "unknown",
-          "unsupported",
-          "playable",
-          "verified"
-        ],
-        "type": "string"
-      },
-      "steam_machine": {
-        "enum": [
-          "unknown",
-          "unsupported",
-          "playable",
-          "verified"
-        ],
-        "type": "string"
-      },
-      "steam_os": {
-        "enum": [
-          "unknown",
-          "unsupported",
-          "playable",
-          "verified"
-        ],
-        "type": "string"
-      },
-      "store_url": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "tags": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "vr_support": {
-        "enum": [
-          "none",
-          "supported",
-          "required"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "appid",
-      "name",
-      "store_url",
-      "review_percent",
-      "review_count",
-      "review_label",
-      "platforms",
-      "steam_deck",
-      "steam_os",
-      "steam_machine",
-      "steam_frame",
-      "vr_support",
-      "tags",
-      "release_date",
-      "is_free",
-      "price",
-      "coming_soon"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "No store data for this appid: either it doesn't exist, or it isn't sold in the requested country. Never dropped from the list, so rows line up with the given appids.",
+    "properties": {
+      "appid": {
+        "type": "number"
+      },
+      "available": {
+        "const": false,
+        "type": "boolean"
+      }
+    },
+    "required": [
+      "appid",
+      "available"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "appid": {
+        "type": "number"
+      },
+      "available": {
+        "const": true,
+        "type": "boolean"
+      },
+      "coming_soon": {
+        "type": "boolean"
+      },
+      "is_free": {
+        "type": "boolean"
+      },
+      "name": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "platforms": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "price": {
+        "anyOf": [
+          {
+            "anyOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "discount_end": {
+                    "anyOf": [
+                      {
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "discount_pct": {
+                    "type": "number"
+                  },
+                  "final": {
+                    "anyOf": [
+                      {
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "original": {
+                    "anyOf": [
+                      {
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "discount_pct",
+                  "discount_end",
+                  "final",
+                  "original"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "is_free": {
+                    "const": true,
+                    "type": "boolean"
+                  }
+                },
+                "required": [
+                  "is_free"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "null does NOT mean free: Steam returns no price block when the game isn't sold in the requested country, isn't released yet, or has no purchase option. Check is_free and coming_soon before concluding anything, and re-check under another `country`."
+      },
+      "release_date": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "review_count": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "review_label": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "review_percent": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "steam_deck": {
+        "enum": [
+          "unknown",
+          "unsupported",
+          "playable",
+          "verified"
+        ],
+        "type": "string"
+      },
+      "steam_frame": {
+        "enum": [
+          "unknown",
+          "unsupported",
+          "playable",
+          "verified"
+        ],
+        "type": "string"
+      },
+      "steam_machine": {
+        "enum": [
+          "unknown",
+          "unsupported",
+          "playable",
+          "verified"
+        ],
+        "type": "string"
+      },
+      "steam_os": {
+        "enum": [
+          "unknown",
+          "unsupported",
+          "playable",
+          "verified"
+        ],
+        "type": "string"
+      },
+      "store_url": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "tags": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "vr_support": {
+        "enum": [
+          "none",
+          "supported",
+          "required"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "appid",
+      "name",
+      "store_url",
+      "review_percent",
+      "review_count",
+      "review_label",
+      "platforms",
+      "steam_deck",
+      "steam_os",
+      "steam_machine",
+      "steam_frame",
+      "vr_support",
+      "tags",
+      "release_date",
+      "available",
+      "is_free",
+      "price",
+      "coming_soon"
+    ],
+    "type": "object"
+  }
+]

Changed1 schema field changedv0.12.1Jul 30, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```
Addedv0.10.4Jul 26, 2026
Removedv0.10.2Jul 22, 2026
Addedv0.10.2Jul 22, 2026
Removedv0.8.1Jul 18, 2026

Changed2 schema fields changedv0.5.0Jul 9, 2026

changedInput schema / properties / country / description

Previous value: -"Country (cc) for prices; overrides STEAM_COUNTRY."New value: +"Country (cc) for prices/currency; overrides STEAM_COUNTRY for this call."

changedInput schema / properties / language / description

Previous value: -"Store language; overrides STEAM_LANGUAGE."New value: +"Store language (e.g. english, russian); overrides STEAM_LANGUAGE for this call."

First observedv0.1.0Jun 29, 2026

TDQS

A4.8/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With readOnlyHint and openWorldHint annotations already declaring the safety profile, the description adds substantial behavioral detail: unknown/invalid appids are returned as available:false rather than dropped, compatibility fields are explained (including the important distinction between steam_frame and vr_support), and discount_end is defined as ISO UTC time. This goes well beyond the annotations and provides critical runtime expectations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is long but front-loaded with the core purpose and then details each returned field, with disambiguation and alternative tool references. Every sentence serves a purpose, though some field explanations might be redundant given the output schema exists. Overall it is well-structured but slightly verbose for a tool with a full schema.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description is comprehensive: it covers the purpose, batch limit (implied by schema and restated), invalid appid behavior, detailed field semantics, and points to sibling tools for discovery and price-only batches. It leaves no ambiguity about how to use this tool within the broader tool ecosystem.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema already covers all three parameters with descriptions (appids 1-50, country, language), so the baseline is 3. The description adds useful input-related context: invalid appids are tolerated and returned as rows, and the 'keyless call' note clarifies no authentication is needed. However, it does not add much about country/language beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Get price/discount, review % (positive), hardware compatibility, popular user tags and release date for a LIST of games by appid in ONE keyless call.' It clearly distinguishes from siblings by emphasizing batch handling of an existing appid list, and explicitly names alternatives such as get_prices and discover_games.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit when-to-use guidance: it calls itself 'The efficient way to price-, rating-, tag- and compat-check a wishlist or library without a request per game.' It also states when to use alternatives ('For a bigger batch (up to 250 appids) when you only need price, use get_prices instead') and how to obtain appids ('Get appids from search_games / get_wishlist / get_owned_games').

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.