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Real, calibrated Dota 2 / Deadlock win-rate predictions and pick recommendations from batru.gg.
About
Real, calibrated Dota 2 / Deadlock win-rate predictions and pick recommendations from batru.gg.
Security Report
5.2
Moderate5.2Moderate Riskbatru-mcp is a well-designed, read-only MCP server with strong security fundamentals. The codebase demonstrates proper authentication handling via environment variables, appropriate input validation through hero name normalization, and secure HTTP communication with the upstream API. Permissions are tightly scoped to the server's purpose (read-only API wrapper). Minor code quality improvements around exception handling and response validation are recommended but do not materially impact security. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
7 files analyzed · 8 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Base URL of the batru.gg API. Defaults to https://batru.gg; override only for local testing.
Environment variable: BATRU_API_BASE
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"gg-batru-batru-mcp": {
"env": {
"BATRU_API_BASE": "your-batru-api-base-here"
},
"args": [
"batru-mcp"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
batru-mcp
A minimal, read-only MCP server over batru.gg's live API, so your LLM can answer Dota 2 / Deadlock draft, counter and win-rate questions with real, calibrated model predictions instead of guessing from memory.
It is a thin wrapper around batru.gg's public endpoints — no model runs locally; every number comes from the same production model the website serves.
Why calibrated matters
batru.gg's model is trained on ~20M real matches and calibrated: a reported 60% win rate corresponds to an empirically observed ~60% win rate. We deliberately do not headline a raw "accuracy" number — accuracy alone is misleading for win prediction. What you get from these tools are probabilities you can trust at face value. The tool descriptions instruct the host LLM to report these numbers verbatim and never invent matchup data.
Tools
| Tool | What it does |
|---|---|
lookup_hero(query, game="dota2") | Normalise a name/alias/shortName to {id, displayName, shortName}. game ∈ {dota2, deadlock}. |
predict_dota_winrate(my_heroes, enemy_heroes, my_side="radiant") | Calibrated win-rate % for both teams (partial drafts OK; empty → 50/50). |
recommend_dota_pick(my_heroes, enemy_heroes, my_side="radiant") | Top-3 heroes to pick next, each with its calibrated win rate. |
get_dota_counters(hero, limit=12) | Real matchup table: who this hero beats / loses to, with win rate % and sample size. |
predict_deadlock_draft(team0_heroes, team1_heroes) | Calibrated win-rate % for a Deadlock 6v6 (6 heroes per team). |
Hero names are accepted in any form (e.g. am, anti mage, Anti-Mage) and normalised internally — the backend silently drops names it doesn't recognise, so normalising first keeps predictions honest.
Install
Requires uv (or any way to run a Python 3.12+ package from PyPI):
uvx batru-mcp # fetches from PyPI and starts the stdio MCP server
Configuration is via the BATRU_API_BASE environment variable (default https://batru.gg) — you normally don't need to set anything.
Claude Desktop config
Add to claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json):
{
"mcpServers": {
"batru": {
"command": "uvx",
"args": ["batru-mcp"]
}
}
}
Restart Claude Desktop; the batru tools appear in the tool picker. Claude Code:
claude mcp add batru -- uvx batru-mcp.
Development
git clone https://github.com/batrugg/batru-mcp && cd batru-mcp
uv sync
uv run batru-mcp # run the server from the checkout (blocks, waiting on stdin)
For a Claude Desktop pointing at the checkout, use
"command": "uv", "args": ["run", "--directory", "/absolute/path/to/batru-mcp", "batru-mcp"].
Tests
uv run pytest # offline: hero normalisation + draft assembly
uv run pytest -m live # also hits the real batru.gg API
Prefer programmatic access from Python instead of MCP? pip install batru — the
official batru SDK.
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