Rekko

rekko-mcp MCP server MCP Badge

Prediction market intelligence for AI coding assistants. 24 MCP tools for market data, deep analysis, trading signals, arbitrage detection, and screening across Kalshi, Polymarket, Robinhood, and Coinbase.

Install

uvx rekko-mcp
# or
pip install rekko-mcp

Requires Python 3.11+ and a Rekko API key (free tier available).

Configure

Claude Code:

claude plugin install rekko

Or add to .mcp.json:

{
  "mcpServers": {
    "rekko": {
      "command": "uvx",
      "args": ["rekko-mcp"],
      "env": { "REKKO_API_KEY": "rk_free_your_key_here" }
    }
  }
}

Cursor — same .mcp.json format in .cursor/mcp.json.

What You Get

• Market data — browse, search, and get price history across Kalshi, Polymarket, Robinhood, and Coinbase
• Deep analysis — multi-stage AI research pipeline with probability estimates and causal decomposition (30-90s)
• Trading signals — edge assessment, confidence scoring, Kelly criterion position sizing
• Arbitrage — cross-platform spread detection between Kalshi and Polymarket
• Screening — batch score markets by volume, movement, and opportunity
• Performance — trading track record and calibration metrics
• Webhooks — real-time alerts for price shifts and whale trades
• Quickstart — working code snippets for Python, curl, and MCP config to get started in under 5 minutes

Quick Examples

"What are the top prediction markets right now?"
"Analyze the Fed rate decision market on Kalshi"
"Find arbitrage opportunities above 3% spread"
"Screen the top 50 Kalshi markets and analyze anything actionable"
"Show me a quickstart for Python"

Tutorials

• Prediction Market API Comparison — Kalshi vs Polymarket vs Robinhood vs Coinbase APIs compared
• Build a Trading Bot with Python — End-to-end bot with screening, analysis, and signals
• Kalshi API Guide — RSA-PSS auth, endpoints, and adding AI analysis
• Polymarket API Guide — CLOB, py-clob-client, and AI-powered analysis
• MCP Trading Workflow — Natural language market research from your IDE
• Cross-Platform Arbitrage — Find price gaps between platforms
• Kelly Criterion Sizing — Optimal position sizing

Pricing

Tier	Per call	Includes
Free	$0.00	Calibration, health check
Listing	$0.01	Market data, price history
Insight	$0.10	Analysis, screening, resolution
Strategy	$2.00	Signals, portfolio sizing, consensus
Deep	$5.00	Arbitrage, correlation, webhooks

Free plan: 100 listing + 10 insight calls/month. Upgrade to Pro for higher limits.

Links

• rekko.ai — Home
• Documentation — Full API reference and tutorials
• Status — API uptime and incident history
• OpenAPI Spec — Machine-readable API schema
• RapidAPI — Marketplace listing