Mcpspend

Name: Mcpspend
Author: andreisirbu91-lab

@andreisirbu91-lab

About Mcpspend

MCPSpend is the first cost-observability platform built natively for MCP. One CLI command wraps yourexisting MCP servers across Claude Desktop, Cursor, Windsurf, VS Code, and Claude Code — zero SDKchanges. Per-tool / per-project cost attribution, $ budget alerts via email + Slack

#cost-tracker #cursor #claude #anthropic #ai-tracking

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcpspend": {
      "command": "npx",
      "args": [
        "-y",
        "@mcpspend/mcp-server@latest"
      ],
      "env": {
        "MCPSPEND_API_KEY": "<YOUR_MCPSPEND_API_KEY>"
      }
    }
  }
}

Tools

No tools detected

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Mcpspend?

MCPSpend is a cost-observability tool for the Model Context Protocol (MCP). It uses a transparent stdio proxy to record metadata on every tool call—server name, tool name, latency, success/error, and estimated token usage—and streams that data to a dashboard for cost analysis. It is built for developers running MCP clients like Claude Desktop, Cursor, Windsurf, VS Code, and Claude Code who need to understand which tool calls drive their LLM bills.

How to use Mcpspend?

Run the single command npx @mcpspend/proxy add in the terminal. The CLI auto-detects every MCP client on the machine, lists the servers it found, asks for confirmation, then rewrites the configuration files in-place (with .mcpspend.bak backups) to wrap each server with the transparent proxy. The proxy then streams metadata to api.mcpspend.com/v1/ingest authenticated with your API key.

Key features of Mcpspend

Transparent stdio proxy intercepting every tools/call
Auto-detects MCP clients on the machine (Claude Desktop, Cursor, Windsurf, etc.)
Dashboard shows top-N tools by cost with gradient bars
Sessions view with drill-down into specific agent runs
Budget projections with Slack alerts at 50/80/100%
Per-project cost allocation by labeling MCP servers
Privacy-by-design: never sends tool arguments, responses, or file contents
25,000 calls/month on the free tier