Inventory API
Fetch a complete Steam inventory for any user across CS2, Dota 2, Rust and TF2. Non-blocking, no 429 errors, with full item metadata and pricing.
Developer-friendly API
All-in-One Steam API
Market, Inventory, Skin Prices & Trade
for CS2, Rust, Dota 2 & more
Steamwebapi delivers lightning-fast access to every Steam API endpoint – market prices, skin price APIs for CS2, Dota 2, Rust & more, inventory and trade – with zero 429 errors.
Rated 5 stars
by over
4000+ users
Trusted by leading companies worldwide
We are the #1 choice for Steam game data. Here's why.
Our API is trusted by developers across the globe who rely on our services for their projects.
2016
Established
Trusted by Steam developers since
8018
Active Users
Developers building with our Steam API
130199
items being tracked
Across CS2, Dota 2, Rust and TF2 inventories
10,210
apps being tracked
Steam app metadata in our database
24/7
uptime
24/7 continuous operation
99.9%
up-to-date
Steam Market data refresh SLA
382816
Steam market transactions
Tracked Steam Community Market trades
$8,161,656,124
spent on the Steam market
Aggregate Steam Market trading volume
How it works
From zero to production in minutes. No complex setup or infrastructure management.
01
Sign up
Create your free account in seconds. No credit card required to start.
02
Get API key
Generate your API key from the dashboard. Ready to use immediately.
03
Make your first request
Start fetching inventories, prices, and trade data. It's that simple.
Join thousands of developers building with SteamWebAPI
View Documentation →What can I build with this?
Discover the power of our Steam Marketplace API: buy and sell skins with ease. Create an inventory worth calculator or customise your gaming experience with an in-game skin changer. Foster thriving communities, build Discord bots and track user inventories and profiles. Unleash the potential of our versatile API.
Marketplace
You can build a marketplace and, for instance, utilise our Inventory API. To list items and prices, make use of the Items API.
Inventory Worth Calculator
Build an inventory value calculator similar to csbackpack.net using our Steam Profile API together with the Inventory API.
Communities
Build thriving communities for your users – from esports platforms to PUG services and beyond – powered by our API.
Skin Changer
Elevate your gaming experience with an in-game skin changer. Customise CS2 or any skins-enabled game on unofficial servers for endless personalisation.
Discord Bots
Create your own Discord bot to calculate stats, display ranks and much more – all via our API.
Tracker
Effortlessly track user inventories and profiles with our reliable tracker. Gain valuable insights and stay up to date with our powerful tools.
Have a custom use case?
Let's talk →
10+ Marketplaces, One API
All Markets, One API Call
Buff, Youpin, Skinport, DMarket, Waxpeer, Skinbaron and more — query any marketplace with a single parameter. Including Doppler & Gamma Doppler phase prices.
Try the API live
Pick an endpoint and see the actual JSON response we return. No signup, no tokens — just real production data shapes.
Every endpoint below returns clean, predictable JSON tested across millions of requests. Inspect the live response shape before you write a single line of integration code — no Steam Web API key required to preview, no rate limits to navigate.
Steam API endpoints available in this preview
Inventory Batch API
Pull multiple Steam inventories in a single request. Ideal for portfolio trackers, leaderboards and inventory worth calculators.
Items API
Browse the full catalog of Steam items with names, types, rarity, exterior and live market price snapshots.
Item Detail API
Get granular per-item data — current price, median price, lowest sell, highest buy and 24h volume — for any Steam Market listing.
Steam Profile API
Resolve Steam profile information including avatar, level, country, friends count and visibility — bypassing the official rate-limit pain.
CS2 Float API
Retrieve float values, paint seeds and patterns for CS2 skins. Backed by our growing float database with 6+ months of historical data.
Friendlist API
Get a Steam user's friend list with relation timestamps. Useful for trade-bot allowlists and community graph analytics.
Price History API
Up to 365 days of Steam Market price history per item. Power dashboards, alerts, arbitrage detection and trading signals.
Steam Login Secure Resolver
Decode and validate Steam Login Secure cookies for server-side trade-bot and authentication flows.
Steam ID Resolver
Convert any Steam vanity URL or profile link into a SteamID64 for use with all our endpoints.
Steam API Platform
All-in-one Steam API for developers
Ideal for all project types – discover unmatched features like Steam Market items and seamless inventory management. Our API is user-friendly and our documentation top-notch. Even the free plan unlocks every endpoint.
Go to Steam API DocumentationSeamless JSON Data
Effortlessly integrate comprehensive JSON data from our service, empowering your applications with up-to-date information.
Real-time Item Prices
Keep users informed with real-time item prices and the latest market rates.
Crucial Item Insights
Access essential item details instantly and enrich your app with targeted information.
Item Price History
Track price changes over time with our built-in historical data.
Item Tracking
Monitor item additions and removals in user inventories for a complete history.
Steam Profile Access
Retrieve key profile information quickly and reliably.
No 429 Errors
Say goodbye to inventory blocking and pesky 429 responses – our service keeps data flowing.
Lightning-Fast Performance
Experience blazing-fast response times thanks to our optimised infrastructure.
Trusted by developers from over 80 countries
Our API is trusted by developers across the globe who rely on our services for their projects.
99.9%
Uptime SLA
Reliable infrastructure
10M+
Requests Daily
Production-tested at scale
5,000+
Active Developers
Trusted by the community
24/7
Monitoring
Always online and fast
Active Maintenance
Regular updates and improvements. Last updated 2 days ago with new endpoints and fixes.
Fast Response Times
Global CDN with under 100ms average response time worldwide.
Enterprise Security
Encrypted connections, API key rotation, and audit logs for production teams.
STEAM INVENTORY API
Steam Inventory API – Non-blocking and 429-free
Production-grade endpoints for inventory, items, profiles, float data and price history. No 429 errors, no blocking, just clean JSON.
Inventory API
Seamlessly access user inventories, including item details, without 429 errors.
No Rate LimitsItems API
Retrieve a complete list of game items with names and descriptions.
Complete DataProfile API
Fetch Steam user profiles effortlessly, free from blocking issues.
Fast AccessItem Details API
Get granular item data – price, median price and more.
Detailed InfoTracking API
Monitor item changes in inventories in real time.
Real-time UpdatesHistory API
Access up to a year of price history to spot trends with ease.
Historical DataDeveloper Tools & Packages
Our PHP and Python packages on GitHub make integrating Steamwebapi even faster. They include a sample project – the CS2/CS:GO Inventory Value Calculator.
Skip the boilerplate. Steamwebapi ships official open-source SDKs for Next.js, PHP and Python so you can hit any Steam API endpoint with a few lines of code. Each library is MIT-licensed, fully typed, and maintained alongside the API — every release stays in sync with new Steam Web API endpoints, CS2 market schema changes and Doppler phase updates.
CS2 Inventory Calculator
The CS2 Inventory Calculator is a free tool to calculate the value of your CS2 (or CS:GO) inventory. Built with Next.js, it lets you evaluate individual skins or your entire inventory in real time.
Real-time price updates
Responsive design
PHP Package
Our PHP package streamlines project development, offering seamless API integration and comprehensive documentation.
Easy API integration
Comprehensive documentation
Python Package
Our Python package integrates effortlessly with Steamwebapi, accelerating your development workflow.
Easy API integration
Comprehensive documentation
Frequently Asked Questions
Find answers to common questions about our API and services.
What is Steamwebapi?
Steamwebapi is a high-performance API platform that provides real-time and cached data for the Steam Community Market, CS2, and Steam inventories. We offer endpoints for market prices, item metadata, inventories, profiles and float values.
Are you affiliated with Valve or Steam?
No. Steamwebapi.com is fully independent and not affiliated with Valve or Steam.
Which games do you support?
We support CS2, Dota 2, Rust and all other Steam Community Market games.
What is the Steam Market API?
Our Steam Market API delivers real-time and historical pricing data for CS2, Dota 2, Rust and other Steam Market items.
How fast is the Steam Market API?
We use optimized caching and request buffering to provide extremely fast responses and prevent Steam's 429 rate-limit errors.
Do you offer CS2 Market pricing?
Yes. We provide dedicated CS2 Market Pricing API endpoints for skins, stickers, agents, patches and more.
Can I use the API for price tracking, bots or marketplaces?
Yes. Our API powers trading bots, price trackers, marketplaces, Discord bots, extensions, analytics tools and more.
What is the Steam Inventory API?
Our Steam Inventory API allows you to fetch complete inventories for CS2, Dota 2, Rust and all Steam games — including item values, tradability and full metadata.
Why is the official Steam Inventory API often down or slow?
The official endpoint is unstable and frequently rate-limited. Steamwebapi uses caching and request buffering to keep inventory access fast and reliable.
Do you support CS2 inventory data with values?
Yes. Our CS2 Inventory API includes item pricing, float values (when available) and market metadata.
Can I build auto-sell or pricing tools with your Inventory API?
Yes. Many developers use our Inventory API for value calculators, auto-sell tools, CS2 shops and Steam trading platforms.
What is the Steam Float API?
Our Steam Float API retrieves CS2 float values, paint seeds, patterns and additional item metadata.
Is float fetching rate-limited?
Official float sources are extremely rate-limited. We optimize requests and serve cached or pre-scanned float data whenever possible.
Do you provide a Float Database?
Yes. We maintain an expanding CS2 Float Database accessible through our API.
Do you provide a Steam Profile API?
Yes. You can fetch public profile data including avatars, Steam level, visibility status and basic user info.
Does the API work for private profiles?
No. Private Steam profiles cannot be accessed due to Steam's privacy rules.
Is my purchase a subscription?
Yes. Paid plans are recurring subscriptions processed via Stripe. You can choose a monthly or yearly billing interval, and the plan auto-renews at the end of each period until you cancel. You can cancel at any time from your dashboard via "Manage subscription" — your access remains active until the end of the current billing period.
How can I contact you?
You can reach us anytime via Discord, live chat or email. We have been active since 2019 and are a trusted provider in the Steam API community. We aim to deliver excellent support and long-term reliability.
Is the Free Plan suitable for production use?
The Free Plan is for testing and development. For production systems we recommend at least the Starter Plan.
Can I upgrade my plan at any time?
Yes. You can upgrade instantly by contacting us via Discord or live chat.
Where can I find my API key?
Your API key is shown in your Steamwebapi dashboard. It is independent from Valve's official Steam Web API key.
How do I avoid 429 errors from the Steam API?
Steamwebapi uses smart buffering and caching to prevent Steam's rate limits. Even when Steam returns 429 errors, we continue serving cached responses so your app never breaks.
Who are you and how long have you been doing this?
We are a small, dedicated team specializing in Steam-related software, APIs and marketplaces. Since 2018, we have delivered numerous Steam-focused tools and platforms for developers, traders and gaming communities.
Still have questions?
Join our Discord
What is Steamwebapi?
Steamwebapi is the all-in-one developer platform for Steam game data. We provide a single, reliable interface to every Steam API endpoint you need — Steam Market prices, full Steam inventory, item metadata, Steam profiles, CS2 float values, friend lists and historical price data — across CS2, Dota 2, Rust, Team Fortress 2 and the wider Steam Community Market. Our engineering focus is reliability: production traffic for thousands of developers since 2016, with sub-100 ms responses and a 99.9 % uptime SLA.
We exist because the official Steam Web API is unreliable for production: rate limits, transient outages, schema gaps and the famous "429 — Too Many Requests" blocks. Steamwebapi sits in front of Steam with smart request buffering, distributed caching and a global proxy network so your application keeps responding even when Steam doesn't.
Explore the API
Ready to dive in and transform your project?
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