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MCPSpend

by andreisirbu91-lab
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MCPSpend

Know what your AI agents really cost. Real-time cost tracking for every MCP tool call across Cursor, Claude Desktop, Windsurf, and VS Code.

npm version Open VSX license MCPSpend MCP server

mcpspend.com · Smithery · npm · Open VSX · Glama

One-command install

npx --yes @mcpspend/proxy@latest init --key mcps_live_xxx

Auto-detects Claude Desktop, Cursor, Windsurf, VS Code (user + workspace), and Claude Code (user + project). Wraps every configured MCP server, leaves a .mcpspend.bak backup, and starts streaming usage to your dashboard at mcpspend.com.

Free tier: 25,000 tool calls/month, no credit card.

Related MCP server: iris-eval/mcp-server

What's in this monorepo

Package

What it is

packages/proxy

@mcpspend/proxy — the stdio observability proxy + wrap-http bridge for remote MCP servers. Published on npm.

packages/mcp-server

@mcpspend/mcp-server — query your MCPSpend usage from inside any MCP client. Published on npm + Smithery.

packages/vscode-extension

mcpspend-vscode — IDE extension for Cursor, Windsurf, and VS Code. Published on Open VSX.

apps/api

Express + Prisma + Postgres + BullMQ. The ingest endpoint, billing, and the new /api/mcp HTTP MCP server.

apps/dashboard

Next.js dashboard at mcpspend.com.

Three ways to query your usage

Use case

How

Web dashboard

mcpspend.com/dashboard — overview, top tools, sessions, CSV export.

From any MCP client (stdio)

Add @mcpspend/mcp-server to your client config — agent gains tools like get_today_cost, list_top_tools.

From any MCP client (HTTP)

Point your client at https://api.mcpspend.com/api/mcp with Authorization: Bearer mcps_live_….

Pricing

Plan

Calls/month

Monthly

Yearly

Free

25,000

$0

$0

Pro

1,000,000

$29

$290 (2 months free)

Team

10,000,000

$99

$990

Enterprise

unlimited

$499

$4,990

Every paid plan: 30–90 day retention, CSV/Slack export, budget alerts, role-based access.

Privacy

The proxy reports: tool name, server name, model, latency, success, approximate input/output sizes (tokens, derived from JSON length). It does not send the actual tool arguments or response bodies to MCPSpend. See Privacy Policy for the full sub-processor list (Stripe + Resend + Hostinger, all EU-hosted) and your GDPR rights.

Security

For automated scanners flagging this repo: the proxy uses child_process.spawn to wrap the user's own MCP server — that's the whole point of an observability proxy. The spawn args come from the user's local MCP-client config (Claude Desktop / Cursor / Windsurf / VS Code), never from network input. No RCE path, no privilege escalation, no arbitrary command execution. Full threat model in SECURITY.md.

  • API keys stored as SHA-256 hashes (never plaintext on the server)

  • Passwords bcrypt cost 12

  • Secrets at rest AES-256-GCM (APP_ENCRYPTION_KEY)

  • Transport HTTPS only, HSTS enabled, helmet CSP headers

  • No tool arguments or responses ever leave the user's machine

  • Per-tenant isolation every query scopes by organizationId

  • GDPR Art. 15 / 17 / 20 self-serve at mcpspend.com/dashboard/account/privacy

  • EU-hosted (Hostinger EU region)

  • SOC 2 Type I in progress with Vanta (Q4 2026)

  • DPA available for Enterprise customers

Report vulnerabilities: security@mcpspend.com · Machine-readable disclosure: https://mcpspend.com/.well-known/security.txt · Full policy: SECURITY.md · Live posture: https://mcpspend.com/security

Support the project

If MCPSpend saves you money or you just want to keep the proxy MIT and the free tier alive, you can sponsor any amount via Stripe — no account required:

💖 buy.stripe.com/00w8wPbUxe1qgK36CRbbG06

Every dollar goes back into hosting, security audits, and shipping features.

License

MIT. Use it, fork it, run it self-hosted.

© NewRzs SRL · CUI RO48756557 · Bucharest, Romania · support@mcpspend.com

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maintenance

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Maintenance

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If you are the server author, to access and configure the admin panel.

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