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."

19 deterministic tools across trade planning, risk & margin, and funding/carry. Formulas verified against 22 canonical test vectors — same inputs always produce the same outputs.

Two access surfaces: MCP (Claude Desktop / Cursor / VS Code) and REST API (/v1/primitives, /v1/workflows).

Endpoints

Surface	URL	Auth
MCP	https://tradingcalc.io/api/mcp	Bearer optional
REST primitives	https://tradingcalc.io/v1/primitives/:id	Bearer required
REST workflows	https://tradingcalc.io/v1/workflows/:id	Bearer required
Discovery	https://tradingcalc.io/v1/primitives	None
Docs	https://tradingcalc.io/docs	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 (19)

Tool naming follows the workflow.run_* / primitive.* / system.* namespace convention. Old flat names (pnl, liquidation, etc.) are accepted for backward compatibility.

Standard Workflows — 5 credits each (via MCP or POST /v1/workflows/:id)

Trade Planning

Tool	REST endpoint	Description
workflow.run_pnl_planning	/v1/workflows/pnl-planning	Net PnL, fees and gross profit/loss for a futures trade
workflow.run_breakeven_planning	/v1/workflows/breakeven-planning	Break-even price accounting for entry/exit fees
workflow.run_exit_target	/v1/workflows/exit-target	Exit price required to hit a target PnL or ROE
workflow.run_scenario_planning	/v1/workflows/scenario-planning	Multi-scenario P&L analysis across price targets
workflow.run_dca_entry	/v1/workflows/dca-entry	DCA across N price levels → avg entry, breakeven, level contribution
workflow.run_scale_out	/v1/workflows/scale-out	Partial exits at multiple levels → P&L per exit, weighted avg, overall ROI

Risk & Margin

Tool	REST endpoint	Description
workflow.run_liquidation_safety	/v1/workflows/liquidation-safety	Liquidation price for long/short isolated margin
workflow.run_position_sizing	/v1/workflows/position-sizing	Position size based on account size and max risk %
workflow.run_max_leverage	/v1/workflows/max-leverage	Maximum safe leverage based on drawdown tolerance and volatility

Funding & Carry

Tool	REST endpoint	Description
workflow.run_funding_cost	/v1/workflows/funding-cost	Cumulative funding cost over a holding period
workflow.run_funding_arbitrage	/v1/workflows/funding-arbitrage	Annualized yield from long/short basis trades across two exchanges
workflow.run_compound_funding	/v1/workflows/compound-funding	Capital growth projection from reinvesting funding income
workflow.run_funding_breakeven	/v1/workflows/funding-breakeven	Price move needed to cover funding cost + fees over holding period

Advanced Workflows — 8 credits each

Tool	REST endpoint	Description
workflow.run_risk_reward	/v1/workflows/risk-reward	Full R:R analysis: sizing + liquidation + breakeven + P&L at stop and target
workflow.run_carry_trade	/v1/workflows/carry-trade	Delta-neutral carry setup: net yield, ROI, breakeven days, verdict

Primitives — 1 credit each (via MCP or POST /v1/primitives/:id)

Tool	REST endpoint	Description
primitive.average_entry	/v1/primitives/average_entry	Average entry price after DCA into a position
primitive.hedge_ratio	/v1/primitives/hedge_ratio	Short perp size and funding cost to hedge a spot position

Integrated Decision Workflow — 10 credits

Tool	REST endpoint	Description
workflow.run_pre_trade_check	/v1/workflows/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 22 canonical test vectors against all calculators. Returns pass/fail report.

Formulas normalized across 7 exchanges: Binance, Bybit, OKX, Hyperliquid, Aster, KuCoin, MEXC.

Rate Limits & Pricing

Plan	Req/day	Credits/mo	Price
Anonymous	20	—	Free
Free API key	200	—	Free
Trader	2,500	250	$19/mo
Builder	50,000	5,000	$79/mo
Team	250,000	25,000	$249/mo
Growth	2,000,000	150,000	$599/mo

Credits: primitive = 1 cr · standard workflow = 5 cr · advanced workflow = 8 cr · pre-trade-check = 10 cr · verification bundle = +2 cr

Get your API key → email hi@tradingcalc.io or see tradingcalc.io/pricing

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

Self-Verification

Agents can verify all 22 canonical test vectors before trusting results:

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

Response: { "status": "pass", "passed": 22, "failed": 0, "total": 22 }

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

• API docs: tradingcalc.io/docs
• Pricing: tradingcalc.io/pricing
• Verification proof: tradingcalc.io/verify
• Web calculators: tradingcalc.io
• Telegram Mini App: @perpcalcbot