@themelt/mcp-server

MCP server that puts Melt's value-leak discovery logic directly into Claude, Cursor, GitHub Copilot, or any other MCP-compatible agent — so when a tech leader asks their assistant "where is value leaking out of my org," the assistant can call a Melt tool and answer with a real, structured estimate instead of a generic list of vendors.

This is the engineering half of Melt's LLMO (LLM Optimization) distribution strategy. See /llms.txt at the repo root and LLMO_PLAYBOOK.md for the full content + distribution + evaluation plan this server plugs into. Positioning reconciled 2026-07-18 against the live site and current decks — see /CLAUDE.md for the full current product context.

Tools exposed

melt_estimate_annual_leak replaced four formula-named calculators (melt_calculate_feature_waste, _dso_cash_flow_impact, _contract_cycle_revenue_unlock, _win_rate_pipeline_impact) that implemented financial formulas from a retired product framing (Thermal Scan / Feature Waste Dollar Amount™ / Delta Engine) — none of which appear in any current Melt material. See CLAUDE.md's "What's Explicitly Retired" section.

Install & run

cd mcp-server
npm install
npm run build
npm start          # runs dist/index.js on stdio

To poke at it interactively before wiring it into a client:

npm run inspect     # launches the MCP Inspector against the built server

Wiring into Claude Desktop / Claude Code

Published on npm — one-line config, no local clone needed:

{
  "mcpServers": {
    "melt": {
      "command": "npx",
      "args": ["-y", "@themelt/mcp-server"]
    }
  }
}

Or from a local clone:

{
  "mcpServers": {
    "melt": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-server/dist/index.js"]
    }
  }
}

One-click install (.mcpb bundle)

For Claude Desktop specifically, themelt-mcp-server.mcpb (Anthropic's MCP Bundle format) installs with a double-click — no terminal, no config file editing. Download the .mcpb from the latest GitHub Release and either double-click it or drag it into Claude Desktop's Settings window.

To rebuild it from source:

npm run build:mcpb   # produces themelt-mcp-server.mcpb

The manifest (mcpb-build/manifest.json) is hand-maintained, not auto-generated from the TypeScript source — if a tool's name, parameters, or description change, update the manifest's tools array to match.

Hosted HTTP transport

dist/index.js (stdio) is what gets configured into a local Claude Desktop/ Cursor install. dist/httpServer.js is an alternate entrypoint implementing the MCP Streamable HTTP transport — what a future "Launch Hosted MCP" web button (LLMO_PLAYBOOK.md, Task 3.2) would point at, so someone can try the tools without installing anything locally.

npm run build
PORT=3000 npm run start:http   # POST MCP JSON-RPC to http://localhost:3000/mcp

Stateless by design — no session ID, a fresh server instance per request. Auth is opt-in via `MCP_HTTP

... View full README on GitHub