claude mcp add whodoicallfor -- npx -y whodoicallfor-mcp

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

https://whodoicallfor.com/api/mcp/

claude mcp add --transport http whodoicallfor https://whodoicallfor.com/api/mcp/

npx whodoicallfor-mcp                # stdio (default)
npx whodoicallfor-mcp --http         # streamable HTTP on http://localhost:3000/mcp
npx whodoicallfor-mcp --http 8080    # ...on a port you pick

{ "problem": "water coming through my ceiling" }

{
  "matches": [
    {
      "title": "Water Leaking From the Ceiling — Who Do I Call?",
      "category": "water",
      "vertical": "water-damage",
      "tldr": "What's directly above matters less than timing. Appears or worsens when it rains → roofer. Appears when the AC runs, or only in cooling season → HVAC condensate line. Neither, and it tracks water use upstairs → plumber. If water is still coming, shut the main valve, keep it clear of lights and outlets, and photograph everything before any repair. Renting? The landlord's emergency line comes before any of this.",
      "who_to_call": [
        {
          "who": "Emergency plumber",
          "when": "Water is actively dripping or flowing and you can't stop it at the source",
          "not_for": "The leak has stopped — a plumber fixes pipes, not soaked drywall"
        },
        {
          "who": "Roofer",
          "when": "The stain appears or worsens when it rains and stays quiet in dry weather — usually failed flashing",
          "not_for": "The stain tracks showers, washes, or flushes rather than the weather"
        }
      ],
      "costs": [
        {
          "item": "Water-damaged ceiling repair",
          "range": "$200–$1,500",
          "source": "Fixr",
          "source_url": "https://www.fixr.com/costs/ceiling-repair"
        }
      ],
      "updated": "2026-08-12",
      "url": "https://whodoicallfor.com/water/ceiling-leaking/",
      "recommended_call": null,
      "match_score": 12
    }
  ],
  "state": null
}

{ "category": "water", "slug": "ceiling-leaking" }

npm install
npm run typecheck
npm run build
npm start           # stdio
npm run start:http  # http on :3000

src/index.ts    entry point: tool definitions, stdio + streamable HTTP transports
src/client.ts   cached fetches against the public JSON endpoints
src/match.ts    token-overlap ranking