steamwebapi
Live Steam Market API docs, schemas, products, games, markets and endpoint search.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'get_concept' description lacks action verbin get_concept
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"steamwebapi": {
"url": "https://mcp.steamwebapi.com/mcp"
}
}
}Remote endpoints
https://mcp.steamwebapi.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (11)
🟢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.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢search_endpoints(query, kind, tag, limit)
Fuzzy text search across all steamwebapi.com OpenAPI endpoints and Steam domain concepts (assetid, doppler phase, market_hash_name, etc.). Returns ranked hits with path, method, tag and summary.
Input Schema
{
"type": "object",
"properties": {
"query": {
"type": "string",
"minLength": 1,
"description": "Free-text query, e.g. \"inventory cs2\" or \"float screenshot\"."
},
"kind": {
"type": "string",
"enum": [
"endpoint",
"concept"
],
"description": "Restrict to endpoints or concepts."
},
"tag": {
"type": "string",
"description": "Restrict to one OpenAPI tag (Items, Inventory, Profile, Float, Market Prices, Market Index, Account, Info, Explore, Proxy)."
},
"limit": {
"type": "integer",
"minimum": 1,
"maximum": 50,
"default": 10,
"description": "Maximum number of hits returned."
}
},
"required": [
"query"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_endpoint(path, method)
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.
Input Schema
{
"type": "object",
"properties": {
"path": {
"type": "string",
"minLength": 1,
"description": "Full OpenAPI path, e.g. \"/steam/api/items\" or \"/account/me\"."
},
"method": {
"type": "string",
"enum": [
"get",
"post",
"put",
"patch",
"delete"
],
"description": "HTTP method. Defaults to \"get\"."
}
},
"required": [
"path"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢list_endpoints(tag)
Lists all steamwebapi.com endpoints (path + method + summary), optionally filtered by tag. Useful for quickly enumerating what is available.
Input Schema
{
"type": "object",
"properties": {
"tag": {
"type": "string",
"description": "Restrict to one tag. Omit to list every endpoint grouped by tag."
}
},
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢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.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢list_markets(game)
Lists every third-party marketplace covered by the steamwebapi.com market price endpoints, with their domain and the games they cover.
Input Schema
{
"type": "object",
"properties": {
"game": {
"type": "string",
"description": "Restrict to markets that cover a specific game slug, e.g. \"cs2\"."
}
},
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢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.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_concept(term)
Returns a detailed explanation for a Steam / steamwebapi concept (identifiers, CS2 mechanics, pricing fields, inventory flags). Built from curated domain knowledge specific to this platform.
Input Schema
{
"type": "object",
"properties": {
"term": {
"type": "string",
"minLength": 1,
"description": "Concept name or alias, e.g. \"assetid\", \"doppler phase\", \"market_hash_name\", \"pricelatest\"."
}
},
"required": [
"term"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢list_concepts(category)
Lists every curated concept exposed by get_concept, optionally filtered by category. Use to discover what domain explanations are available.
Input Schema
{
"type": "object",
"properties": {
"category": {
"type": "string",
"enum": [
"identifiers",
"cs2",
"market",
"inventory",
"pricing",
"auth"
],
"description": "Filter the list by concept category."
}
},
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_pricing(useCase, expectedRequestsPerDay, includePlanCatalog)
Returns public steamwebapi pricing plans, per-endpoint rate limits, API-key location, quota guidance and a recommended plan for the requested use case. Does not perform checkout or account actions.
Input Schema
{
"type": "object",
"properties": {
"useCase": {
"type": "string",
"description": "Optional use case such as \"inventory\", \"profile\", \"float\", \"history\", \"items\", \"market prices\" or \"balanced production app\"."
},
"expectedRequestsPerDay": {
"type": "integer",
"exclusiveMinimum": 0,
"description": "Optional expected daily request count for plan recommendation."
},
"includePlanCatalog": {
"type": "boolean",
"default": true,
"description": "Include the full public plan catalog with prices and rate limits. Defaults to true."
}
},
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢call_readonly_endpoint(path, parameters, timeoutMs, maxResponseBytes)
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.
Input Schema
{
"type": "object",
"properties": {
"path": {
"type": "string",
"minLength": 1,
"description": "Documented OpenAPI GET path, e.g. \"/steam/api/item\" or \"/market/{market}/prices\"."
},
"parameters": {
"type": "object",
"additionalProperties": {
"anyOf": [
{
"type": [
"string",
"number",
"boolean"
]
},
{
"type": "array",
"items": {
"$ref": "#/properties/parameters/additionalProperties/anyOf/0"
}
}
]
},
"description": "Query and path parameters for the endpoint. Do not include `key`; pass your API key via the MCP Authorization or X-Api-Key header."
},
"timeoutMs": {
"type": "integer",
"minimum": 500,
"maximum": 20000,
"default": 10000,
"description": "HTTP timeout in milliseconds. Defaults to 10000."
},
"maxResponseBytes": {
"type": "integer",
"minimum": 1000,
"maximum": 200000,
"default": 80000,
"description": "Maximum response characters returned to the agent. Larger responses are truncated."
}
},
"required": [
"path"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Community
Evidence