Steam concurrent player counts over time as a normalized time series. Track any game's player momentum, measure peak-to-current decline or growth, and compare across titles - via a single POST endpoint.
Steam's own API has a GetNumberOfCurrentPlayers endpoint. It tells you how many people are playing a game right now. What it does not tell you is how that number looked 3 months ago, or whether the game's player base is in a long decline or a post-update resurgence.
Trends MCP exposes that historical view - monthly concurrent player data, normalized and comparable across titles.
POST https://api.trendsmcp.ai/api
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
Historical concurrent player data for any Steam game, normalized 0-100.
{
"source": "steam",
"keyword": "Elden Ring"
}
Response:
[
{
"date": "2026-03-01",
"value": 31,
"volume": null,
"keyword": "Elden Ring",
"source": "steam"
}
]
Note: Steam data is reported at monthly granularity. The data_mode field is ignored for this source.
Track how a game's player count has moved between any two periods.
{
"source": "steam",
"keyword": "Counter-Strike 2",
"percent_growth": ["3M", "1Y"]
}
Custom date comparison - useful for measuring launch vs. current:
{
"source": "steam",
"keyword": "Baldur's Gate 3",
"percent_growth": [
{ "name": "since launch", "recent": "2026-01-01", "baseline": "2023-09-01" }
]
}
Preset periods available: 7D 14D 30D 1M 2M 3M 6M 9M 12M 1Y 18M 24M 2Y 36M 3Y 48M 60M 5Y MTD QTD YTD
Python
import requests
res = requests.post(
"https://api.trendsmcp.ai/api",
headers={"Authorization": "Bearer YOUR_API_KEY"},
json={"source": "steam", "keyword": "Elden Ring", "percent_growth": ["3M", "1Y"]}
)
data = res.json()
JavaScript
const res = await fetch("https://api.trendsmcp.ai/api", {
method: "POST",
headers: {
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json"
},
body: JSON.stringify({ source: "steam", keyword: "Elden Ring", percent_growth: ["3M", "1Y"] })
});
const data = await res.json();
FAQ