mbanderas/costguard

CostGuard

<p align="center"> <img src="assets/costguard-banner.png" alt="CostGuard — a robot sea captain steering a boat named costguard through waters of dollars, CPUs, clocks, and clouds" width="720"> </p> <p align="center"> <a href="https://www.npmjs.com/package/@costguard/costguard-mcp"><img src="https://img.shields.io/npm/v/@costguard/costguard-mcp?label=npm&color=2E9E6B" alt="npm version"></a> <a href="https://github.com/mbanderas/costguard/actions/workflows/ci.yml"><img src="https://img.shields.io/github/actions/workflow/status/mbanderas/costguard/ci.yml?branch=master&label=CI" alt="CI status"></a> <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-2E9E6B" alt="MIT license"></a> <a href="https://nodejs.org"><img src="https://img.shields.io/node/v/@costguard/costguard-mcp" alt="node version"></a> </p>

CostGuard audits your repos and cloud providers for CI and infrastructure cost leaks. It is built for developers who run several projects across GitHub Actions, Vercel, Supabase, Railway, Netlify, Neon, Cloudflare, and more, and want a single command that surfaces what is being wasted and exactly how to fix it. On repositories that have never been optimized, the static audit alone typically reduces CI spend by 60–80%.

<p align="center"> <img src="assets/chart-ci-savings.svg" alt="Observed CI cost reduction: 60-80% typical on repositories never optimized, up to 80% best observed" width="720"> </p>

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Install

CostGuard installs three ways. The plugin paths are zero-build and zero-npm (they ship a prebuilt, self-contained bundle); the npm package gives you the CLI and the MCP server anywhere.

Claude Code

/plugin marketplace add mbanderas/costguard
/plugin install costguard@costguard

Adds /costguard-audit, /costguard-fix, /costguard-live, and the full costguard skill (scan, providers, registry, report, digest). No build step, no npm install.

Codex

codex plugin marketplace add mbandera