Ibkr API Skill

Quick Decision: Which API?

Default recommendation: TWS API via ib_async library for all programmatic work.

Account Architecture

Tim's setup: Roth IRA + Personal Brokerage + THK Enterprises (future business account)

• All linked under single IBKR username/password
• Single API session accesses all linked accounts
• Use reqLinkedAccounts() to enumerate account IDs
• Specify account ID per order placement
• Market data subscriptions charged once across all linked accounts
• One active session per username — connecting elsewhere closes current session

IRA-Specific Restrictions (Critical)

Core API Operations

Read Operations (Safe — use for all account types)

# Key TWS API functions for portfolio queries
reqLinkedAccounts()        # List all account IDs
reqAccountSummary()        # Balances, buying power, equity (all accounts)
reqPositions()             # Current positions (up to 50 sub-accounts)
reqPositionsMulti()        # Per-account positions (>50 sub-accounts)
reqAccountUpdates()        # Stream account + position data (single account)
reqMktData()               # Real-time Level 1 market data
reqHistoricalData()        # Historical price data

Write Operations (Use with caution — respect IRA restrictions)

placeOrder(account_id, contract, order)  # Place order on specific account
cancelOrder(order_id)                     # Cancel pending order
reqGlobalCancel()                         # Cancel all open orders

Client Portal REST Endpoints (Alternative)

GET  /iserver/accounts                        # List accounts
GET  /iserver/account/{id}/positions          # Positions
GET  /iserver/account/{id}/summary            # Balances
POST /iserver/account/{id}/orders             # Place order
GET  /market/candle                           # Historical candles

Python Library: ib_async

Install: pip install ib_async

Why ib_async over alternatives:

• Modern successor to ib_insync (original creator's project continued)
• Native asyncio support
• Implements IBKR binary protocol internally (no need for official ibapi)
• Active maintenance (GitHub: ib-api-reloaded/ib_async)

Alternatives (use only if ib_async doesn't meet needs):

• ib_insync — Legacy, stable but unmaintained since early 2024
• ibapi — Official IBKR library, cumbersome event loop

Reference: Connection Pattern

See reference/connection-patterns.md for:

• IB Gateway setup and configuration
• Connection/reconnection handling
• Session timeout management (6-min ping for CP API)
• Multi-account query patterns
• Error handling and rate limit management

Reference: Trading Patterns

See reference/trading-patterns.md for:

• Order types (market, limit, stop, bracket, IB algos)
• IRA-safe order validation
• Multi-account order routing
• Position sizing with account-type awareness
• Greeks-aware options order flow

Infrastructure Requirements

1. IB Gateway (lightweight) or TWS (full UI) running locally
2. Java 8+ installed
3. API enabled in TWS/Gateway settings
4. Ports: 7496 (live) / 7497 (paper trading)
5. Credentials: Stored in OS credential manager (never hardcode)

Security Best Practices

• Run IB Gateway on localhost only (no internet exposure)
• Use read-only login for portfolio queries when trading not needed
• Store credentials in macOS Keychain / Linux secret-service
• Implement session timeout handling
• Validate market data subscriptions before placing orders
• Log all order attempts with account ID + timestamp

Cost Structure

Integration with Trading-Signals Skill

This skill complements the trading-signals-skill:

• trading-signals → generates signals, confluence scores, regime detection
• ibkr-api → executes trades, queries positions, manages accounts
• Pipeline: Signal generation → Position sizing → IRA validation → Order execution

IBKR MCP Server (Installed)

ArjunDivecha/ibkr-mcp-server is installed and configured:

• Location: ~/Desktop/tk_projects/ibkr-mcp-server/
• Claude Code: Added to ~/.claude.json (user scope)
• Claude Desktop: Added to claude_desktop_config.json
• Mode: Paper trading (port 7497), live trading disabled
• Safety: Order cap 1,000 shares, confirmation required

Available MCP Tools

To Activate

1. Start IB Gateway → port 7497 (paper) or 7496 (live)
2. Enable API: Config → API → Settings → "ActiveX and Socket Clients"
3. Add 127.0.0.1 to Trusted IPs
4. Restart Claude Code / Claude Desktop

Other Community MCP Servers

• code-rabi/interactive-brokers-mcp — Client Portal REST API
• xiao81/IBKR-MCP-Server — TWS API focused
• Hellek1/ib-mcp — Read-only via ib_async (safest)

Multi-Broker Aggregation

For unified view across IBKR + Robinhood:

• SnapTrade MCP (dangelov/mcp-snaptrade) — Read-only aggregator, 15+ brokerages, OAuth-based (safe)
• Alpaca MCP (official) — Alternative broker with production-ready MCP
• Manual CSV import from Robinhood as fallback (ToS-safe)

See reference/multi-broker-strategy.md for aggregation patterns.

Emit Outcome Sidecar

As the final step, write to ~/.claude/skill-analytics/last-outcome-ibkr-api.json:

{"ts":"[UTC ISO8601]","skill":"ibkr-api","version":"1.0.0","variant":"default",
 "status":"[success|partial|error]","runtime_ms":[estimated ms from start],
 "metrics":{"queries_executed":[n],"positions_analyzed":[n],"accounts_checked":[n]},
 "error":null,"session_id":"[YYYY-MM-DD]"}

Use status "partial" if some stages failed but results were produced. Use "error" only if no output was generated.