Polystrike

The Polystrike MCP server gives Claude read-only access to the record: counters, recent posts and bucket prices for the Elon Musk, Ted Cruz and Donald Trump post-count markets. It runs on our servers; you install nothing except, for Claude Desktop, the mcp-remote bridge that npx fetches for you.

The data tools need a Data key. Your client sends it as the X-API-Key header on the MCP request and the server forwards it to the API. There is no free tier. To get a key, see Quick Start.

Endpoints

• Streamable HTTP (use this): https://polystrike.xyz/mcp
• Legacy SSE, for older clients: https://polystrike.xyz/mcp/sse

Claude Code

claude mcp add --transport http polystrike https://polystrike.xyz/mcp \
  --header "x-api-key: YOUR_KEY"

Claude Desktop

Open the configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

Add:

{
  "mcpServers": {
    "polystrike": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://polystrike.xyz/mcp",
        "--header",
        "x-api-key:${POLYSTRIKE_API_KEY}"
      ],
      "env": {
        "POLYSTRIKE_API_KEY": "YOUR_KEY"
      }
    }
  }
}

Replace YOUR_KEY with your Data key, then quit Claude Desktop completely (Cmd+Q on macOS, not just closing the window) and start it again. You need Node.js for npx.

Tools

All five tools are read-only.

Tool	Arguments	Returns	Needs a Data key
get_market_metadata	user: elon, cruz or trump	Counters and deltas for the open windows	yes
get_recent_tweets	user, limit, offset	Recent posts with is_counted	yes
get_predictions	user	Counters and each bucket’s market_price; no forecasts	yes
get_crypto_metadata	none	Crypto price-market metadata (experimental; can be empty)	no
check_health	none	API status	no

The tools get_trading_signals, analyze_portfolio and get_rebalancing_recommendations no longer exist: Polystrike sells the record, not trading advice.

Try it

Check Polystrike API health

What are the current counters for the open Elon Musk markets?

Show me Donald Trump's latest Truth Social posts and which ones count

Troubleshooting

Tools don’t appear. Check the JSON syntax of the config file, then restart Claude Desktop completely.

A tool says a Data key is required. The key did not reach the server. Check that the header is x-api-key, that the key has no extra spaces, and that it has not expired. An unknown key returns 401; an expired or disabled key returns 403.

Rate limit exceeded. A Data key allows 10,000 requests/hour. Wait for the window to reset.

Something else. Write to [email protected].