Steam

Steam ISteamUser API

The ISteamUser API from Steam — 4 operation(s) for isteamuser.

Documentation GitHub OpenAPI

Specifications

⚙

OpenAPI

https://raw.githubusercontent.com/api-evangelist/steam/refs/heads/main/openapi/steam-isteamuser-api-openapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/steam-isteamuser-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.1.0
info:
  title: Steamworks Web IPlayerService ISteamUser API
  version: 1.0.0
  description: 'Valve''s Steamworks Web API exposes a constellation of HTTP interfaces for

    games, players, news, friends, achievements, and items. Public read-only

    interfaces (with a Steam Web API key) are served from api.steampowered.com;

    publisher-restricted methods are served from partner.steam-api.com.

    Endpoints derived from https://steamcommunity.com/dev and the Steamworks

    documentation at https://partner.steamgames.com/doc/webapi.

    '
  contact:
    name: Steamworks Developer Portal
    url: https://partner.steamgames.com/doc/webapi
servers:
- url: https://api.steampowered.com
  description: Public Steam Web API
- url: https://partner.steam-api.com
  description: Publisher-only Steam Web API
security:
- ApiKey: []
tags:
- name: ISteamUser
paths:
  /ISteamUser/GetPlayerSummaries/v2/:
    get:
      summary: Get profile summaries for a list of Steam users
      security:
      - ApiKey: []
      parameters:
      - in: query
        name: steamids
        required: true
        schema:
          type: string
        description: Comma-separated list of 64-bit Steam IDs.
      responses:
        '200':
          description: Player summaries
      tags:
      - ISteamUser
  /ISteamUser/GetFriendList/v1/:
    get:
      summary: Get the friend list for a Steam user
      security:
      - ApiKey: []
      parameters:
      - in: query
        name: steamid
        required: true
        schema:
          type: string
      - in: query
        name: relationship
        schema:
          type: string
          enum:
          - all
          - friend
          default: all
      responses:
        '200':
          description: Friend list
      tags:
      - ISteamUser
  /ISteamUser/GetPlayerBans/v1/:
    get:
      summary: Get VAC / community ban information for a list of Steam users
      security:
      - ApiKey: []
      parameters:
      - in: query
        name: steamids
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Player ban information
      tags:
      - ISteamUser
  /ISteamUser/ResolveVanityURL/v1/:
    get:
      summary: Resolve a Steam vanity URL into a 64-bit Steam ID
      security:
      - ApiKey: []
      parameters:
      - in: query
        name: vanityurl
        required: true
        schema:
          type: string
      - in: query
        name: url_type
        schema:
          type: integer
          enum:
          - 1
          - 2
          - 3
          default: 1
      responses:
        '200':
          description: Resolved Steam ID
      tags:
      - ISteamUser
components:
  securitySchemes:
    ApiKey:
      type: apiKey
      in: query
      name: key
      description: Steam Web API key. Obtain at https://steamcommunity.com/dev/apikey.