TradingCalc MCP Server

Ask Claude or Cursor trade questions and get exact numbers back, not AI guesses.

"What's my PnL if I buy 0.5 BTC at $80k and sell at $95k with 5x leverage?" "Size my position: $10k account, 1% risk, long BTC at $83k, stop at $81k." "Is this carry trade worth it? 0.01% funding long, 0.05% short, $50k, 30 days."

23 deterministic tools across trade planning, risk & margin, funding/carry, and market-structure (Market Profile) analysis. Formulas verified against 35 canonical test vectors: same inputs always produce the same outputs. Free, no signup.

Access via MCP (Claude Desktop / Cursor / VS Code) or a plain HTTP POST to the MCP endpoint. Free, no signup.

Endpoints

| Surface | URL | Auth | |---|---|---| | MCP | https://tradingcalc.io/api/mcp | Bearer optional (free) | | For agents / setup | https://tradingcalc.io/for-agents | None | | Verification proof | https://tradingcalc.io/verify | None |

MCP transport: Streamable HTTP (MCP spec 2024-11-05)

Quick Start

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "tradingcalc": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://tradingcalc.io/api/mcp"]
    }
  }
}

Cursor / VS Code

{
  "tradingcalc": {
    "url": "https://tradingcalc.io/api/mcp"
  }
}

Direct HTTP

curl -X POST https://tradingcalc.io/api/mcp \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "workflow.run_liquidation_safety",
      "arguments": {
        "side": "long",
        "entryPrice": 95000,
        "leverage": 10
      }
    }
  }'

Example prompts

After connecting, just ask naturally: the AI picks the right tool automatically:

Trade P&L

"I bought 0.5 BTC at $80,000 and want to sell at $95,000 with 5x leverage. What's my net profit after fees?"

Position sizing

"I have a $10,000 account and want to risk 1% going long BTC at $83,000 with a stop at $81,000. How many coins should I buy?"

Liquidation check

"Long ETH at $3,200 with 10x leverage, where do I get liquidated?"

Full pre-trade check

"Analyze this setup: long BTC at $83,000, stop $81,000, target $90,000, $10k account, 1% risk, 5x leverage. Is it worth taking?"

Funding cost

"I'm holding 0.5 BTC long on Bybit at $83,000 with 0.01% funding rate. How much will funding cost me over 3 days?"

Carry trade

"Is this carry trade worth it? Long on Bybit at 0.01% funding, short on Binance at 0.05%, $50k notional, 30 days."

DCA average entry

"I bought BTC at $78k (0.2 BTC), $80k (0.3 BTC), and $82k (0.1 BTC). What's my average entry and breakeven?"

Scale-out plan

"I'm long 1 BTC from $80k. I want to close 30% at $88k, 40% at $92k, 30% at $96k. What's my total P&L?"

Tools (23)

Tool naming follows the workflow.run_* / primitive.* / system.* namespace convention. Old flat names (pnl, liquidation, etc.) are accepted for backward compatibility. All tools are free via MCP, no signup; 20 calls/day anonymously, 200/day with a free API key.

Trade Planning

| Tool | Description | |---|---| | workflow.run_pnl_planning | Net PnL, fees and gross profit/loss for a futures trade | | workflow.run_breakeven_planning | Break-even price accounting for entry/exit fees | | workflow.run_exit_target | Exit price required to hit a target PnL or ROE | | workflow.run_scenario_planning | Multi-scenario P&L analysis across price targets | | workflow.run_dca_entry | DCA across N price levels → avg entry, breakeven, level contribution | | workflow.run_scale_out | Partial exits at multiple levels → P&L per exit, weighted avg, overall ROI |

Risk & Margin

| Tool | Description | |---|---| | workflow.run_liquidation_safety | Liquidation price for long/short isolated margin | | workflow.run_position_sizing | Position size based on account size and max risk % | | workflow.run_max_leverage | Maximum safe leverage based on drawdown tolerance and volatility | | workflow.run_risk_reward | Full R:R analysis: sizing + liquidation + breakeven + P&L at stop and target |

Funding & Carry

| Tool | Description | |---|---| | workflow.run_funding_cost | Cumulative funding cost over a holding period | | workflow.run_funding_arbitrage | Annualized yield from long/short basis trades across two exchanges | | workflow.run_compound_funding | Capital growth projection from reinvesting funding income | | workflow.run_funding_breakeven | Price move needed to cover funding cost + fees over holding period | | workflow.run_carry_trade | Delta-neutral carry setup: net yield, ROI, breakeven days, verdict |

Market Structure (Market Profile)

| Tool | Description | |---|---| | workflow.run_open_analysis | Open location + type (OD/OTD/ORR/OAIR), VAH/VAL/VPOC/IB, scenario framing | | workflow.run_session_structure | Day-type classifier: trend / balance / neutral_trend / normal / normal_var | | workflow.run_value_migration | Value-area migration across sessions, directional conviction vs balance | | workflow.run_breakout_acceptance | Breakout acceptance vs rejection beyond the value area (optional delta) |

Primitives

| Tool | Description | |---|---| | primitive.average_entry | Average entry price after DCA into a position | | primitive.hedge_ratio | Short perp size and funding cost to hedge a spot position |

Integrated Decision

| Tool | Description | |---|---| | workflow.run_pre_trade_check | Full pre-trade decision: position size, liquidation, breakeven, funding cost, go/no-go signal. Accepts live exchange + symbol. |

System

| Tool | Description | |---|---| | system.verify | Run 35 canonical test vectors against all calculators. Returns pass/fail report. |

Formulas normalized across 17 exchanges: Binance, OKX, Bybit, Aster, Hyperliquid, MEXC, KuCoin, Gate, Deribit, Kraken, HTX, WOO, Phemex, Blofin, Backpack, CoinEx, dYdX.

Rate Limits

| Access | Req/day | Price | |---|---|---| | Anonymous | 20 | Free | | Free API key | 200 | Free |

The Service is free. Need a higher-limit key → email [email protected].

Pass key as: Authorization: Bearer <your-api-key>

Self-Verification

Agents can verify all 35 canonical test vectors before trusting results:

{
  "jsonrpc": "2.0", "id": 1,
  "method": "tools/call",
  "params": { "name": "system.verify", "arguments": {} }
}

Response: { "status": "pass", "passed": 35, "failed": 0, "total": 35 }

Live proof: tradingcalc.io/verify

Use Cases

• Trading bots: check liquidation price before every trade
• AI agents: deterministic risk calculations without hallucination risk
• Multi-agent systems: drop-in risk management agent in analyst + risk + execution pipelines
• Dashboards: embed calculations programmatically

Why deterministic?

LLMs asked directly give plausible but potentially wrong numbers. TradingCalc MCP returns exact calculations: same inputs always produce the same outputs. No hallucination risk for financial data.

Risk Agent Wrapper

examples/risk-agent-wrapper.ts: a drop-in TypeScript wrapper for risk-gated trade execution. Integrates with any agent framework (ElizaOS, CrewAI, AutoGen, Hummingbot, Freqtrade).

import { RiskAgent, preTradeGate } from './examples/risk-agent-wrapper';

const agent = new RiskAgent({ apiKey: 'tc_your_key', minLiqDistancePct: 3.0 });

const result = await agent.evaluate({
  symbol: 'BTCUSDT', exchange: 'bybit',
  side: 'long', entry_price: 83000, stop_loss: 81000,
  account_balance: 10000, risk_pct: 1, leverage: 5,
  funding_rate: 0.0001, hold_hours: 24,
});

if (result.approved) {
  // execute trade: result.recommended_size, result.liquidation_price
} else {
  console.log('Rejected:', result.rejection_reason);
}

// Binary gate for execution bots
const ok = await agent.isSafe({ symbol: 'ETHUSDT', side: 'short', ... });

// Standalone function (minimal integration)
const { approved, size, liqPrice } = await preTradeGate({ ... }, 'tc_your_key');

TypeScript SDK

For code-first integrations, use tradingcalc-sdk instead of raw JSON-RPC:

npm install tradingcalc-sdk

import { TradingCalcClient } from 'tradingcalc-sdk';

const tc = new TradingCalcClient({ apiKey: 'tc_your_key' });

// Workflows: orchestrated decisions
const check = await tc.workflows.preTradeCheck({ side: 'long', entry_price: 83000, leverage: 5, funding_rate: 0.0001, account_balance: 5000 });

// Primitives: single formula
const avg = await tc.primitives.averageEntry({ symbol: 'BTCUSDT', input: { fills: [{ price: 83000, quantity: 0.1 }] } });

// System
const report = await tc.system.verify();

tc.call() is available for raw MCP access. Full docs: npmjs.com/package/tradingcalc-sdk

Links

• For agents: tradingcalc.io/for-agents
• Verification proof: tradingcalc.io/verify
• Web calculators: tradingcalc.io