steamwebapi

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io.github.sellrock-de/steamwebapiv0.1.1

Live Steam Market API docs, schemas, products, games, markets and endpoint search.

Entertainment & Games

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call_readonly_endpoint Read-only

Executes a documented steamwebapi GET endpoint with the caller API key from the MCP Authorization or X-Api-Key header. Refuses POST/PUT/PATCH/DELETE plus Proxy, Steam Guard and Tradeoffer endpoints.

pathstring, required

Documented OpenAPI GET path, e.g. "/steam/api/item" or "/market/{market}/prices".

timeoutMsinteger

HTTP timeout in milliseconds. Defaults to 10000.

parametersobject

Query and path parameters for the endpoint. Do not include `key`; pass your API key via the MCP Authorization or X-Api-Key header.

maxResponseBytesinteger

Maximum response characters returned to the agent. Larger responses are truncated.

Tools (11)

call_readonly_endpoint

Executes a documented steamwebapi GET endpoint with the caller API key from the MCP Authorization or X-Api-Key header. Refuses POST/PUT/PATCH/DELETE plus Proxy, Steam Guard and Tradeoffer endpoints.

read-only

Argument	Type	Description
path*	string	Documented OpenAPI GET path, e.g. "/steam/api/item" or "/market/{market}/prices".
timeoutMs	integer	HTTP timeout in milliseconds. Defaults to 10000.
parameters	object	Query and path parameters for the endpoint. Do not include `key`; pass your API key via the MCP Authorization or X-Api-Key header.
maxResponseBytes	integer	Maximum response characters returned to the agent. Larger responses are truncated.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "path"
  ],
  "properties": {
    "path": {
      "type": "string",
      "minLength": 1,
      "description": "Documented OpenAPI GET path, e.g. \"/steam/api/item\" or \"/market/{market}/prices\"."
    },
    "timeoutMs": {
      "type": "integer",
      "default": 10000,
      "maximum": 20000,
      "minimum": 500,
      "description": "HTTP timeout in milliseconds. Defaults to 10000."
    },
    "parameters": {
      "type": "object",
      "description": "Query and path parameters for the endpoint. Do not include `key`; pass your API key via the MCP Authorization or X-Api-Key header.",
      "additionalProperties": {
        "anyOf": [
          {
            "type": [
              "string",
              "number",
              "boolean"
            ]
          },
          {
            "type": "array",
            "items": {
              "$ref": "#/properties/parameters/additionalProperties/anyOf/0"
            }
          }
        ]
      }
    },
    "maxResponseBytes": {
      "type": "integer",
      "default": 80000,
      "maximum": 200000,
      "minimum": 1000,
      "description": "Maximum response characters returned to the agent. Larger responses are truncated."
    }
  },
  "additionalProperties": false
}

get_concept

Returns a detailed explanation for a Steam / steamwebapi concept (identifiers, CS2 mechanics, pricing fields, inventory flags). Built from curated domain knowledge specific to this platform.

Argument	Type	Description
term*	string	Concept name or alias, e.g. "assetid", "doppler phase", "market_hash_name", "pricelatest".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "term"
  ],
  "properties": {
    "term": {
      "type": "string",
      "minLength": 1,
      "description": "Concept name or alias, e.g. \"assetid\", \"doppler phase\", \"market_hash_name\", \"pricelatest\"."
    }
  },
  "additionalProperties": false
}

get_endpoint

Returns the full OpenAPI operation object for a given path: parameters, request body, all response schemas, examples, and tags. Use after search_endpoints to drill into a specific endpoint.

Argument	Type	Description
path*	string	Full OpenAPI path, e.g. "/steam/api/items" or "/account/me".
method	string	HTTP method. Defaults to "get".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "path"
  ],
  "properties": {
    "path": {
      "type": "string",
      "minLength": 1,
      "description": "Full OpenAPI path, e.g. \"/steam/api/items\" or \"/account/me\"."
    },
    "method": {
      "enum": [
        "get",
        "post",
        "put",
        "patch",
        "delete"
      ],
      "type": "string",
      "description": "HTTP method. Defaults to \"get\"."
    }
  },
  "additionalProperties": false
}

get_integration_skill

Read the reusable SteamWebAPI SKILL.md for integration workflows, credentials, prices, item variants and CS2 release discovery. Useful when the client does not expose MCP resources or initialization instructions.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

get_pricing

Returns public steamwebapi pricing plans, per-endpoint rate limits, API-key location, quota guidance and a recommended plan for the requested use case. Does not perform checkout or account actions.

read-only

Argument	Type	Description
useCase	string	Optional use case such as "inventory", "profile", "float", "history", "items", "market prices" or "balanced production app".
includePlanCatalog	boolean	Include the full public plan catalog with prices and rate limits. Defaults to true.
expectedRequestsPerDay	integer	Optional expected daily request count for plan recommendation.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "useCase": {
      "type": "string",
      "description": "Optional use case such as \"inventory\", \"profile\", \"float\", \"history\", \"items\", \"market prices\" or \"balanced production app\"."
    },
    "includePlanCatalog": {
      "type": "boolean",
      "default": true,
      "description": "Include the full public plan catalog with prices and rate limits. Defaults to true."
    },
    "expectedRequestsPerDay": {
      "type": "integer",
      "description": "Optional expected daily request count for plan recommendation.",
      "exclusiveMinimum": 0
    }
  },
  "additionalProperties": false
}

list_concepts

Lists every curated concept exposed by get_concept, optionally filtered by category. Use to discover what domain explanations are available.

Argument	Type	Description
category	string	Filter the list by concept category.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "category": {
      "enum": [
        "identifiers",
        "cs2",
        "market",
        "inventory",
        "pricing",
        "auth"
      ],
      "type": "string",
      "description": "Filter the list by concept category."
    }
  },
  "additionalProperties": false
}

list_endpoints

Lists all steamwebapi.com endpoints (path + method + summary), optionally filtered by tag. Useful for quickly enumerating what is available.

Argument	Type	Description
tag	string	Restrict to one tag. Omit to list every endpoint grouped by tag.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "tag": {
      "type": "string",
      "description": "Restrict to one tag. Omit to list every endpoint grouped by tag."
    }
  },
  "additionalProperties": false
}

list_games

Lists every game supported by steamwebapi.com with its slug, name, Steam appId, and the value to pass as `game=` in API queries.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

list_markets

Lists every third-party marketplace covered by the steamwebapi.com market price endpoints, with their domain and the games they cover.

Argument	Type	Description
game	string	Restrict to markets that cover a specific game slug, e.g. "cs2".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "game": {
      "type": "string",
      "description": "Restrict to markets that cover a specific game slug, e.g. \"cs2\"."
    }
  },
  "additionalProperties": false
}

list_products

Lists steamwebapi.com product packages (Price API, Inventory API, Float API, ...) with the endpoints each one bundles. Use get_pricing for paid plans, request quotas and upgrade guidance.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

search_endpoints

Fuzzy text search across all steamwebapi.com OpenAPI endpoints and Steam domain concepts (assetid, doppler phase, market_hash_name, etc.). Returns ranked hits with path, method, tag and summary.

Argument	Type	Description
tag	string	Restrict to one OpenAPI tag (Items, Inventory, Profile, Float, Market Prices, Market Index, Account, Info, Explore, Proxy).
kind	string	Restrict to endpoints or concepts.
limit	integer	Maximum number of hits returned.
query*	string	Free-text query, e.g. "inventory cs2" or "float screenshot".

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "tag": {
      "type": "string",
      "description": "Restrict to one OpenAPI tag (Items, Inventory, Profile, Float, Market Prices, Market Index, Account, Info, Explore, Proxy)."
    },
    "kind": {
      "enum": [
        "endpoint",
        "concept"
      ],
      "type": "string",
      "description": "Restrict to endpoints or concepts."
    },
    "limit": {
      "type": "integer",
      "default": 10,
      "maximum": 50,
      "minimum": 1,
      "description": "Maximum number of hits returned."
    },
    "query": {
      "type": "string",
      "minLength": 1,
      "description": "Free-text query, e.g. \"inventory cs2\" or \"float screenshot\"."
    }
  },
  "additionalProperties": false
}