SolSigs MCP Server

AI Agent Gateway to Solana blockchain data via x402 micropayments.

What is this?

SolSigs MCP is a Model Context Protocol server that gives AI agents access to 22 Solana on-chain data tools — DEX prices, arbitrage scanning, wallet intel, token launches, AI market summaries, prediction markets, perps data, memecoin trenches, and more.

Each tool costs fractions of a cent USDC via the x402 protocol. No key required — start with 50 free calls automatically.

Quick Start

Free tier (no key needed):

pip install solsigs-mcp
solsigs-mcp
# → SolSigs MCP Server starting (stdio) [FREE-TIER MODE]...
#   50 free calls per session. Set SOLSIGS_MCP_KEY for paid mode.

Paid mode (unlimited calls):

pip install solsigs-mcp
export SOLSIGS_MCP_KEY="<your-base58-solana-private-key>"
solsigs-mcp

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "solsigs": {
      "command": "solsigs-mcp"
    }
  }
}

With a funded wallet:

{
  "mcpServers": {
    "solsigs": {
      "command": "solsigs-mcp",
      "env": {
        "SOLSIGS_MCP_KEY": "<your-base58-solana-private-key>"
      }
    }
  }
}

Cursor / VS Code

Add to .cursor/mcp.json (or .vscode/mcp.json):

{
  "mcpServers": {
    "solsigs": {
      "command": "solsigs-mcp"
    }
  }
}

SSE Mode (remote/multi-client)

export MCP_TRANSPORT=sse
export MCP_HOST=0.0.0.0
export SOLSIGS_MCP_KEY="<your-key>"   # optional
solsigs-mcp
# → SSE endpoint at http://0.0.0.0:3001/sse

Client config:

{
  "mcpServers": {
    "solsigs": {
      "url": "http://localhost:3001/sse"
    }
  }
}

Tools

Configuration

License

MIT