get_position_size
ActiveTool of PredMCP
declared in 0.7.0
Turn a signal + bankroll into a concrete position: fractional-Kelly size capped by orderbook liquidity, ATR-based stop, liquidation price at chosen leverage, funding carry cost, and % bankroll at risk. Warns when liquidation sits inside the stop. Ground win_rate_pct with get_signal_performance or get_signal_backtest first.
Parameters schema
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"asset",
"direction",
"bankroll_usdc"
],
"properties": {
"asset": {
"type": "string",
"description": "Asset, e.g. \"BTC\""
},
"leverage": {
"type": "number",
"default": 3,
"maximum": 50,
"minimum": 1,
"description": "Intended leverage (default 3x)"
},
"direction": {
"enum": [
"long",
"short"
],
"type": "string",
"description": "Trade direction"
},
"payoff_ratio": {
"type": "number",
"default": 1.5,
"maximum": 20,
"minimum": 0.1,
"description": "Avg win / avg loss ratio (default 1.5)"
},
"win_rate_pct": {
"type": "number",
"default": 55,
"maximum": 99,
"minimum": 1,
"description": "Estimated win probability % (use get_signal_performance or get_signal_backtest to ground this)"
},
"bankroll_usdc": {
"type": "number",
"minimum": 10,
"description": "Total capital available in USDC"
},
"kelly_fraction": {
"type": "number",
"default": 0.25,
"maximum": 1,
"minimum": 0.05,
"description": "Fraction of full Kelly to use (default 0.25 — quarter Kelly)"
},
"max_slippage_pct": {
"type": "number",
"default": 0.3,
"maximum": 5,
"minimum": 0.01,
"description": "Max acceptable slippage % — caps size by orderbook depth"
}
},
"additionalProperties": false
}No endpoints wrapped at confidence ≥ 0.50.
Parent server
PredMCP
https://github.com/RavioleLabs/predmcp
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