Mercury402 MCP Server: Install & Setup

Install Mercury402 in Claude Code

Claude Code

claude mcp add --transport http mercury402 https://mcp.mercury402.com/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mercury402": {
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

Claude Code

claude mcp add mercury402 -- npx -y mercury402-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mercury402": {
      "command": "npx",
      "args": [
        "-y",
        "mercury402-mcp"
      ]
    }
  }
}

Treasury/FRED financial data over x402: pay-per-call US yields, macro and forex in USDC on Base

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Local + Remote. Can run locally or be used as a hosted remote server.

Run: claude mcp add --transport http mercury402 https://mcp.mercury402.com/mcp

atsp-protocol/x402-conformance

x402 payment safety checks: validate a 402 answer, prove a server never serves before settlement.

FTHTrading/genesis402-agent-kit

Counterparty checks, sanctions screening, company lookup and 360+ pay-per-call APIs over x402.

NeuZhou/stratevo

Quantitative trading: quotes, backtesting, screening, and genetic algorithm strategy evolution.

theodor90/form4api-mcp

Real-time SEC Form 4, Form 144, 13F-HR & congressional STOCK Act insider data. 39 tools + 6 prompts.

zaffy18/crypto-market-data-mcp

Live crypto market data and Hyperliquid wallet reports for AI agents, paid per call with x402.

JonasFuchss/x402-trust-mcp

Discover x402 endpoints and check their trust score before your agent pays them.