What this MCP does
Calculates whether a proposed long trade remains profitable after fees, spread, slippage, and other trading costs.
Tools
Input schema
{'type': 'object', 'required': ['symbol', 'side', 'size', 'entry_price', 'exit_price', 'entry_liquidity', 'exit_liquidity', 'maker_fee_bps', 'taker_fee_bps', 'spread_bps', 'slippage_bps'], 'properties': {'side': {'enum': ['buy'], 'type': 'string', 'description': 'Long-only: "buy". Shorts are rejected with SIDE_NOT_SUPPORTED.'}, 'size': {'oneOf': [{'type': 'object', 'required': ['quantity'], 'properties': {'quantity': {'type': 'number', 'exclusiveMinimum': 0}}, 'additionalProperties': False}, {'type': 'object', 'required': ['notional'], 'properties': {'notional': {'type': 'number', 'exclusiveMinimum': 0}}, 'additionalProperties': False}], 'description': 'Exactly one of quantity (base units) or notional (quote currency, at the entry reference price).'}, 'symbol': {'type': 'string', 'maxLength': 64, 'minLength': 1, 'description': 'Label only; does not affect the math.'}, 'exit_price': {'type': 'number', 'description': 'Expected exit reference (mid) price, before spread, slippage and fees.', 'exclusiveMinimum': 0}, 'spread_bps': {'type': 'number', 'minimum': 0, 'description': 'FULL bid/ask spread in bps; a taker leg pays half.'}, 'entry_price': {'type': 'number', 'description': 'Entry reference (mid) price, before spread, slippage and fees.', 'exclusiveMinimum': 0}, 'slippage_bps': {'type': 'number', 'minimum': 0, 'description': 'Adverse slippage per taker leg, in bps.'}, 'maker_fee_bps': {'type': 'number', 'minimum': 0, 'exclusiveMaximum': 10000}, 'taker_fee_bps': {'type': 'number', 'minimum': 0, 'exclusiveMaximum': 10000}, 'exit_liquidity': {'enum': ['maker', 'taker'], 'type': 'string'}, 'entry_liquidity': {'enum': ['maker', 'taker'], 'type': 'string'}, 'profit_buffer_bps': {'type': 'number', 'minimum': 0, 'description': 'Optional required net return in bps; omitted means 0 (echoed in assumptions).'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'required': ['ok', 'model_version', 'request_id', 'usage'], 'properties': {'ok': {'type': 'boolean'}, 'error': {'type': 'object', 'properties': {'code': {'type': 'string'}, 'errors': {'type': 'array'}, 'message': {'type': 'string'}}, 'description': 'Present when ok=false. Stable machine-readable code; field-level `errors` for VALIDATION_FAILED.'}, 'usage': {'type': 'object', 'required': ['credits_used', 'credits_remaining'], 'properties': {'credits_used': {'type': 'number'}, 'credits_remaining': {'type': 'number'}}}, 'result': {'type': 'object', 'description': 'Present when ok=true: the canonical /check result.'}, 'request_id': {'type': 'string'}, 'model_version': {'type': 'string', 'description': 'Calculation model version. Same version + same input = same output.'}}}
Recent tool changes
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