Steam Trends API - concurrent player trends as JSON

Steam trend data as clean JSON: monthly concurrent player time series for any game, growth rates and the live most-played feed from one REST endpoint. No Steam Web API key, no scraping SteamDB.

One endpoint. One API key. One normalized 0-100 trend score you can compare against 14 other platforms.

Docs: https://trendsapi.ai/#quickstart · llms.txt: https://trendsapi.ai/llms.txt · Free API key (100 req/mo): https://trendsapi.ai/#get-key

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What a call looks like

curl -X POST https://api.trendsapi.ai/api \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"mode": "get_growth", "source": "steam", "keyword": "Baldur's Gate 3", "percent_growth": ["3M", "12M"]}'

{
  "keyword": "Baldur's Gate 3",
  "source": "steam",
  "growth": { "3M": 41.8, "12M": 212.4 },
  "timestamp": "2026-08-03T12:00:00Z"
}

Quickstart (60 seconds)

1. Get a free API key at https://trendsapi.ai/#get-key - 100 requests/month, no credit card.

2. Make your first call:

curl -X POST https://api.trendsapi.ai/api \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"mode": "get_time_series", "source": "steam", "keyword": "Baldur's Gate 3"}'

Python:

import requests

res = requests.post(
    "https://api.trendsapi.ai/api",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"mode": "get_growth", "source": "steam", "keyword": "Baldur's Gate 3",
          "percent_growth": ["3M", "12M"]},
)
print(res.json())

Node.js:

const res = await fetch("https://api.trendsapi.ai/api", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ mode: "get_growth", source: "steam", keyword: "Baldur's Gate 3",
                          percent_growth: ["3M", "12M"] }),
});
console.log(await res.json());

---

The three modes

Mode	What it returns	Needs a keyword?
get_time_series	Historical concurrent players as a normalized 0-100 series	yes
get_growth	Growth % over 3M / 6M / 12M / 5Y windows	yes
get_top_trends	Live trending feeds (21 of them)	no

Why teams switch

	Steam Web API / SteamDB	Trends API
Player history	not exposed by Steam	monthly series
SteamDB scraping	against ToS, brittle	one call, JSON
Growth rates	compute yourself	3M/6M/12M/5Y built in
Cross-industry compare	no	same scale as 14 other sources
Free tier	n/a	100 requests/month

Use cases

• Game research: is this genre growing or was last year's hit the peak?
• Investing: track player momentum for public game publishers
• Marketing: time your launch window against competitor decay curves
• Streaming: pick games with rising player counts, not just current hype

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Use it from your AI assistant (MCP)

The same API key powers the Trends API MCP server, so Claude, Cursor, VS Code, ChatGPT and any MCP-compatible client can query this data in natural language.

+ Add to Cursor (one click)

Cursor / Windsurf / Cline (~/.cursor/mcp.json or equivalent):

{
  "mcpServers": {
    "trendsapi": {
      "url": "https://api.trendsapi.ai/mcp",
      "transport": "http",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

VS Code / GitHub Copilot (.vscode/mcp.json):

{
  "servers": {
    "trendsapi": {
      "type": "http",
      "url": "https://api.trendsapi.ai/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "trendsapi": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.trendsapi.ai/mcp", "--header", "Authorization:${AUTH_HEADER}"],
      "env": { "AUTH_HEADER": "Bearer YOUR_API_KEY" }
    }
  }
}

Claude.ai (browser): Settings -> Connectors -> Add custom connector -> https://api.trendsapi.ai/mcp

Then ask things like:

How did "creatine gummies" grow on TikTok vs Google over the last 12 months?
What is trending on YouTube right now?

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Every source on the same key

Source	source value	What it measures
Google Search	google search	Search volume
Google Images	google images	Image search volume
Google News	google news	News search volume
Google Shopping	google shopping	Shopping search volume
YouTube	youtube	Search volume
TikTok	tiktok	Hashtag volume
Reddit	reddit	Subreddit subscribers
Amazon	amazon	Product search volume
Wikipedia	wikipedia	Page views
News volume	news volume	Article mention volume
News sentiment	news sentiment	Positive / negative score
App downloads	app downloads	Android downloads (AppBrain)
App rankings	app rankings	Android chart position
npm	npm	Weekly package downloads
Steam	steam	Concurrent players (monthly)

Live feeds (get_top_trends, no keyword needed)

Feed	type value
Google Trends	Google Trends
Google News Top News	Google News Top News
TikTok Trending Hashtags	TikTok Trending Hashtags
TikTok Trending Searches	TikTok Trending Searches
TikTok Shop Hot Products	TikTok Shop Hot Products
YouTube Trending	YouTube Trending
X (Twitter) Trending	X (Twitter) Trending
Reddit Hot Posts	Reddit Hot Posts
Reddit World News	Reddit World News
Wikipedia Trending	Wikipedia Trending
Amazon Best Sellers Top Rated	Amazon Best Sellers Top Rated
Amazon Best Sellers by Category	Amazon Best Sellers by Category
App Store Top Free	App Store Top Free
App Store Top Paid	App Store Top Paid
Google Play	Google Play
Top Websites	Top Websites
Spotify Top Podcasts	Spotify Top Podcasts
Steam Most Played	Steam Most Played
GitHub Trending Repos	GitHub Trending Repos
IMDb MOVIEmeter	IMDb MOVIEmeter
Open Library Trending Books	Open Library Trending Books

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FAQ

What Steam data does Trends API provide?

Monthly concurrent player counts for any game as a normalized time series, growth percentages over 3M/6M/12M/5Y windows, and the live Steam Most Played feed.

Do I need a Steam Web API key?

No. One Trends API key covers Steam and every other source.

How is this different from SteamDB?

SteamDB is a website you scrape (against its terms). Trends API gives you the same class of data as clean JSON with normalization and growth already computed, in the same response shape as 14 other sources.

Can I compare a game's Steam players with its Twitch or YouTube buzz?

Query Steam alongside youtube or google search for the game title and compare normalized scores. Player counts and content interest often diverge in interesting ways.

How far back does history go?

Up to 5 years of monthly data on paid plans; 90 days on the free tier.

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Links

• Docs & quickstart: https://trendsapi.ai/#quickstart
• llms.txt (machine-readable API reference): https://trendsapi.ai/llms.txt
• Pricing (free tier: 100 requests/month): https://trendsapi.ai/#pricing
• Get an API key: https://trendsapi.ai/#get-key

License

MIT - see LICENSE. Data is served by Trends API; usage of the API itself is subject to the plan limits on your key.