groundhog.markets MCP Server: Install & Setup

Install groundhog.markets in Claude Code

Claude Code

claude mcp add --transport http groundhog-markets https://groundhog.markets/mcp

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

{
  "mcpServers": {
    "groundhog-markets": {
      "url": "https://groundhog.markets/mcp"
    }
  }
}

groundhog.markets: free weather forecasts in one call, plus Kalshi and Polymarket market rules.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Remote. Hosted by the provider. You connect with a URL, nothing to install.

Run: claude mcp add --transport http groundhog-markets https://groundhog.markets/mcp

ai.agentlookups/groundtruth

Federal environmental records near any US location, with dates and provenance; never a safety score.

com.graphmake/graphmake

Turn data into infographics (PNG/SVG): 90+ templates, or KPI cards, charts, timelines and maps.

unspecifiedcoder/groundtruth

Verified location-bound retail evidence for AI agents, delivered by human field workers.

io.github.perwinroth/got-cosy-graph

Travel/hotel data: 6,300 hotels scored for cosiness from guest reviews; verified booking links.

com.groundworkdemographics/groundwork

Site and market reports for any U.S. location: residents, incomes, spending, competitors, growth.

Ac0AI/gospelchannel

Find a Christian church by worship style, denomination, language, and location. Read-only.