🆓 Free Alternative to Sensibull & Opstra

| Feature | Sensibull (₹1500/mo) | Opstra (₹999/mo) | Indian Option MCP (Free) | |:---|:---:|:---:|:---:| | Option Chain | ✅ | ✅ | ✅ Live from NSE | | Strategy Builder | ✅ (20+) | ✅ (15+) | ✅ 34 strategies | | Greeks Calculator | ✅ | ✅ | ✅ Black-Scholes | | Max Pain | ✅ | ✅ | ✅ | | OI Analysis | ✅ | ✅ | ✅ | | IV Smile/Skew | ❌ | ✅ | ✅ | | Position Sizing | ❌ | ❌ | ✅ | | Margin Estimation | ❌ | ❌ | ✅ | | Probability of Profit | ❌ | ❌ | ✅ | | AI-Powered Analysis | ❌ | ❌ | ✅ Claude AI | | Natural Language | ❌ | ❌ | ✅ "Build me an Iron Condor" | | API/Programmatic | ❌ | ❌ | ✅ MCP Protocol | | Price | ₹1500/month | ₹999/month | 🆓 Forever Free |

✨ Why Indian Option MCP?

| Pain Point | Old Way | With This MCP | |:---|:---|:---| | Checking option chains | Open Sensibull/NSE website, scroll, compare | "Show me NIFTY option chain" | | Building strategies | Manually pick strikes, calculate P&L | "Build an iron condor on BANKNIFTY" | | Greeks analysis | Open Black-Scholes calculator, enter values | "What are the Greeks for NIFTY 24000 CE?" | | Finding support/resistance from OI | Stare at OI columns, do mental math | "Where is the highest OI in NIFTY?" | | Position sizing | Spreadsheet + guesswork | "Size a position for ₹5L capital, 2% risk" |

🕐 24/7 Availability — Works Even After Market Hours

Most NSE tools and scrapers break after 3:30 PM IST because NSE takes down the option chain API. This MCP server uses a dual-endpoint fallback architecture:

| Time | Data Source | What You Get | |:---|:---|:---| | 9:15 AM – 3:30 PM (Market Open) | Primary NSE API | Full chain with IV, Greeks, change-in-OI, bid/ask | | After 3:30 PM (Market Closed) | Fallback derivatives API | Closing snapshot with OI, LTP, volume, strike prices |

No configuration needed. The fallback is automatic. You always get data, any time of day.

🚀 Features

📊 Option Chain Tools

| Tool | Description | |:-----|:------------| | get_option_chain | Full option chain with strikes, LTP, OI, IV, volume, bid/ask for calls & puts | | get_expiry_dates | All available expiry dates for any F&O symbol | | get_spot_price | Current spot/underlying price of any stock or index |

🔢 Greeks & Pricing

| Tool | Description | |:-----|:------------| | calculate_greeks | All Greeks — Delta, Gamma, Theta, Vega, Rho — via Black-Scholes | | calculate_iv | Implied Volatility from market price (Newton-Raphson method) | | calculate_option_price | Theoretical option price using Black-Scholes model | | what_if_greeks | Scenario analysis — how Greeks change under hypothetical conditions |

🏗️ Strategy Builder — 34 Pre-Built Strategies

| Tool | Description | |:-----|:------------| | build_strategy | Build any of 34 strategies with real market prices, payoff & breakevens | | custom_strategy | Build custom multi-leg strategies with specific strikes | | suggest_strategy | Get strategy suggestions based on outlook & risk preference | | list_strategies | Browse all available strategies by category | | calculate_payoff | Payoff/P&L table at expiry across price scenarios |

📈 Open Interest Analysis

| Tool | Description | |:-----|:------------| | calculate_max_pain | Max Pain strike — where option buyers lose the most | | get_pcr | Put-Call Ratio (OI, Volume, and Change based) with interpretation | | highest_oi_strikes | OI-based support & resistance levels | | oi_change_analysis | Change in OI patterns — emerging support/resistance |

📉 IV Analytics

| Tool | Description | |:-----|:------------| | iv_smile | IV Smile curve + IV Skew across strikes | | expected_move | Expected price range by expiry (1σ, 1.645σ, 1.96σ) |

🌍 Market Data

| Tool | Description | |:-----|:------------| | market_overview | NIFTY & BANKNIFTY snapshot — spot, ATM IV, PCR, lot size | | market_status | Is the NSE market currently open or closed? | | lot_size | Lot size for any F&O instrument | | next_expiry | Next weekly/monthly expiry date |

🛡️ Risk Management

| Tool | Description | |:-----|:------------| | estimate_margin | SPAN + Exposure margin estimate for option strategies | | probability_of_profit | POP calculation using log-normal distribution | | position_sizing | Optimal lot count based on capital & risk tolerance |

🔍 Scanners

| Tool | Description | |:-----|:------------| | scan_high_oi | Find strikes with highest institutional OI buildup | | unusual_activity | Detect abnormally high volume/OI ratio |

💬 MCP Prompts

| Prompt | Description | |:-------|:------------| | strategy_advisor | Full strategy recommendation workflow — chains, PCR, max pain, expected move, build & size | | market_analysis | Comprehensive analysis — OI, PCR, IV smile, max pain, expected move synthesized |

⚡ Quick Start

Option 1: npx (Recommended — Zero Install)

Add this to your Claude Desktop config:

{
  "mcpServers": {
    "indian-options": {
      "command": "npx",
      "args": ["-y", "indian-option-mcp"]
    }
  }
}

Restart Claude Desktop. Done. 🎉

Option 2: Clone & Build

# Clone the repository
git clone https://github.com/devag7/Indian-Option-MCP.git
cd Indian-Option-MCP

# Install dependencies & build
npm install
npm run build

Configure Claude Desktop

Add this to your Claude Desktop config file:

| OS | Path | |:---|:-----| | macOS | ~/Library/Application Support/Claude/claude_desktop_config.json | | Windows | %APPDATA%\Claude\claude_desktop_config.json | | Linux | ~/.config/Claude/claude_desktop_config.json |

{
  "mcpServers": {
    "indian-options": {
      "command": "node",
      "args": ["/absolute/path/to/Indian-Option-MCP/dist/bundle.mjs"],
      "env": {
        "DATA_PROVIDER": "nse"
      }
    }
  }
}

That's it. Restart Claude Desktop and start asking about Indian options! 🎉

💬 Example Conversations

Once configured, just talk naturally to Claude:

You: Show me the NIFTY option chain for the nearest expiry

You: Build an iron condor on BANKNIFTY with 3 strikes OTM

You: What's the max pain for NIFTY? Where is OI-based support?

You: I'm bullish on RELIANCE. Suggest a strategy with low risk.

You: Calculate Greeks for NIFTY 24500 CE, 10 days to expiry, 14% IV

You: Show the expected move for NIFTY at 95% confidence

You: Size a short straddle on BANKNIFTY for ₹10L capital, max 2% risk

🏗️ Strategy Library

All 34 pre-built strategies, ready to deploy with live market prices:

📈 Bullish

| Strategy | Legs | |:---------|:----:| | long_call | 1 | | bull_call_spread | 2 | | bull_put_spread | 2 | | put_credit_spread | 2 | | synthetic_long | 2 | | covered_call | 2 | | collar | 3 | | strap | 2 | | jade_lizard | 3 |

📉 Bearish

| Strategy | Legs | |:---------|:----:| | long_put | 1 | | bear_put_spread | 2 | | bear_call_spread | 2 | | put_debit_spread | 2 | | call_credit_spread | 2 | | synthetic_short | 2 | | protective_put | 2 | | strip | 2 |

⚖️ Neutral

| Strategy | Legs | |:---------|:----:| | short_straddle | 2 | | short_strangle | 2 | | iron_condor | 4 | | iron_butterfly | 4 | | butterfly | 3 | | calendar_spread | 2 | | double_diagonal | 4 |

🌊 Volatility

| Strategy | Legs | |:---------|:----:| | long_straddle | 2 | | long_strangle | 2 | | back_spread_call | 2 | | back_spread_put | 2 | | ratio_call_spread | 2 | | ratio_put_spread | 2 | | short_call | 1 | | short_put | 1 | | broken_wing_butterfly | 3 | | christmas_tree | 3 |

💡 Tip: Use list_strategies to browse by category, or suggest_strategy to get recommendations based on your market view.

🔌 Data Providers

| Provider | API Key | Features | Speed | |:---------|:-------:|:---------|:-----:| | NSE India (default) | ❌ Not needed | Full option chains, OI, IV, volume, spot prices | ⚡ Fast | | Zerodha Kite (optional) | ✅ Required | Full option chains, tick-level data, order book depth | ⚡⚡ Faster |

NSE (Default — Zero Config)

Works out of the box. The server fetches data directly from NSE India's public endpoints.

# No configuration needed — just build and run
DATA_PROVIDER=nse  # this is the default

Zerodha Kite (Optional)

For traders with a Zerodha account who want faster data and deeper order book:

DATA_PROVIDER=zerodha
KITE_API_KEY=your_api_key
KITE_API_SECRET=your_api_secret
KITE_ACCESS_TOKEN=your_access_token  # refreshed daily

Get credentials from developers.kite.trade

⚙️ Environment Variables

Copy .env.example to .env and configure as needed:

cp .env.example .env

| Variable | Default | Description | |:---------|:--------|:------------| | DATA_PROVIDER | nse | Data source — nse (free) or zerodha (needs API key) | | KITE_API_KEY | — | Zerodha Kite API key (only if zerodha) | | KITE_API_SECRET | — | Zerodha Kite API secret (only if zerodha) | | KITE_ACCESS_TOKEN | — | Zerodha session token, refreshed daily (only if zerodha) | | CACHE_TTL_SECONDS | 5 | Real-time data cache lifetime in seconds | | INSTRUMENT_CACHE_TTL_HOURS | 12 | Instrument master cache lifetime in hours | | RISK_FREE_RATE | 0.07 | Annual risk-free rate for Black-Scholes (7% = Indian 10Y bond) | | LOG_LEVEL | info | Logging verbosity — debug, info, warn, error |

🏛️ Architecture

indian-option-mcp/
├── src/
│   ├── index.ts                    # Entry point — stdio transport
│   ├── server.ts                   # MCP server — all 35+ tools registered here
│   ├── config.ts                   # Zod-validated env configuration
│   │
│   ├── data/
│   │   ├── providers/
│   │   │   ├── base.provider.ts    # Abstract data provider interface
│   │   │   ├── nse.provider.ts     # NSE India scraper (default)
│   │   │   └── zerodha.provider.ts # Kite Connect API client
│   │   ├── provider-factory.ts     # Provider factory pattern
│   │   ├── cache/
│   │   │   ├── memory-cache.ts     # TTL-based in-memory cache
│   │   │   └── instrument-cache.ts # Long-lived instrument master cache
│   │   ├── constants/
│   │   │   ├── lot-sizes.ts        # F&O lot sizes (NIFTY=75, BANKNIFTY=30, etc.)
│   │   │   ├── expiry-calendar.ts  # Expiry date calculations
│   │   │   └── indices.ts          # Index metadata & strike intervals
│   │   └── models/
│   │       ├── option-chain.ts     # Option chain data models
│   │       ├── instrument.ts       # Instrument definitions
│   │       ├── quote.ts            # Quote/tick models
│   │       ├── strategy.ts         # Strategy type definitions
│   │       └── index.ts            # Model barrel exports
│   │
│   ├── engine/
│   │   ├── black-scholes.ts        # Option pricing & Greeks (Δ, Γ, Θ, ν, ρ)
│   │   ├── implied-volatility.ts   # IV solver (Newton-Raphson)
│   │   ├── iv-surface.ts           # IV Smile, Skew, Rank, Percentile, HV
│   │   ├── strategy-builder.ts     # 34 strategy templates + builder
│   │   ├── payoff.ts               # Payoff/P&L at expiry engine
│   │   ├── max-pain.ts             # Max Pain calculator
│   │   ├── pcr.ts                  # Put-Call Ratio analyzer
│   │   ├── oi-analysis.ts          # OI distribution & activity detection
│   │   ├── margin-calculator.ts    # SPAN margin estimator
│   │   └── risk-metrics.ts         # POP, Kelly, position sizing
│   │
│   └── utils/
│       ├── date.ts                 # Market hours, DTE, expiry helpers
│       ├── format.ts               # Currency, number, OI formatting
│       ├── math.ts                 # Normal CDF, statistical functions
│       └── logger.ts               # Stderr-only logger (MCP-safe)
│
├── dist/                           # Compiled output
├── package.json
├── tsconfig.json
└── .env.example

Design Principles

• Zero external trading dependencies — only @modelcontextprotocol/sdk and zod
• Provider pattern — swap between NSE and Zerodha with one env variable
• Pure computation engine — all pricing, Greeks, and analytics are self-contained
• MCP-safe logging — all output goes to stderr, never stdout (protects stdio transport)
• Startup validation — Zod schemas validate all config at boot, not at runtime

🛠️ Development

# Watch mode (recompile on save)
npm run dev

# Type-check without emitting
npm run lint

# Run tests
npm test

# Inspect with MCP Inspector
npm run inspect

# Clean build artifacts
npm run clean

🤝 Contributing

Contributions are welcome! Here's how to get started:

1. Fork the repository
2. Create a feature branch — git checkout -b feat/my-feature
3. Commit your changes — git commit -m "feat: add my feature"
4. Push to your branch — git push origin feat/my-feature
5. Open a Pull Request

Areas for Contribution

• 🆕 New strategies (e.g., seagull, condor variations)
• 🌐 Additional data providers (Upstox, Angel One, etc.)
• 📊 Enhanced analytics (IV term structure, correlation analysis)
• 🧪 Test coverage for engine modules
• 📚 Documentation improvements

📄 License

This project is licensed under the MIT License — see the LICENSE file for details.