# Parlay

Connects AI assistants to live odds from Polymarket, Kalshi, and Limitless. Gathers market data and sentiment without opening browser tabs.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 6
- Author: parlay-run
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/parlay-run/parlay-mcp
- Updated: 2026-05-26
- HTML: https://affpapa.org/en/nevibecode/mcp/parlay

## What it does

Parlay links your assistant to a hosted prediction market aggregator built on PMXT. It runs strictly in read-only mode. You cannot place orders, fund accounts, or manage positions through its endpoints. The server searches active contracts, aligns cross-venue probabilities, and generates topical research briefs.

The service separates real-money exchanges from community sentiment. Information from Polymarket and Kalshi does not blend into Manifold polls during direct probability comparisons. Note that JSON-configured clients like Claude Code or Cursor require a personal access token in request headers. Without it, the endpoint rejects the connection. The free tier covers 15 tool calls per month.

## Requirements
- Remote server: `https://mcp.parlay.run/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http parlay https://mcp.parlay.run/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add parlay --url https://mcp.parlay.run/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "parlay": {
            "url": "https://mcp.parlay.run/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "parlay": {
            "type": "http",
            "url": "https://mcp.parlay.run/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http parlay https://mcp.parlay.run/mcp
```

## When to use it
- compare event probabilities side-by-side between Polymarket and Kalshi
- spot price discrepancies across different prediction exchanges
- generate a synthesized brief on current event odds
- track trending contracts with high trading volume

## Example prompts
- Search for active prediction contracts about interest rate cuts and compare their odds
- Run market_brief on the upcoming elections to summarize real-money probabilities and sentiment
- Use scan_discrepancies to check for spread differences between Kalshi and Polymarket

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