About Cloud Guardian

An open-source FinOps platform that automatically detects and remediates cost inefficiencies across your Google Cloud infrastructure.

Why we built this

Cloud costs are the fastest-growing line item for most engineering teams, yet optimization is often manual, reactive, and time-consuming. Teams discover waste during quarterly reviews instead of preventing it in real-time.

Cloud Guardian was created to close this gap. It continuously scans your GCP projects every 6 hours, evaluates resources against configurable policies, and either alerts you or automatically fixes the issue — all without requiring you to change your deployment workflow.

Design principles

Visibility first

You can't optimize what you can't see. Cloud Guardian surfaces cost data, utilization metrics, and policy violations across all your GCP projects in a single dashboard.

Automated remediation

Detection without action is just noise. Cloud Guardian auto-fixes violations via direct GCP API calls or GitHub PRs against your infrastructure-as-code.

Security by default

Credentials are encrypted with AES-256-GCM using Cloud KMS-wrapped DEKs. Read-only scanning. Write permissions only where auto-remediation is explicitly enabled.

Developer-native

Integrates into your existing workflow. MCP server for Claude Code, GitHub App for PR-based fixes, API keys for CI/CD, and webhook notifications for your alerting stack.

Architecture

Backend

Go, Connect-RPC (gRPC + HTTP/JSON), deployed on Cloud Run (australia-southeast2). Firestore for persistence, Cloud KMS for credential encryption.

Frontend

Next.js 16, React 19, Tailwind CSS, shadcn/ui. Deployed on Vercel. Firebase Auth for authentication.

Scanner

Parallel GCP API scanning across 9 resource types. CEL-based custom rules. Background ticker with per-project timeouts.

MCP Server

70+ tools for Claude Code integration. Server-mediated auth flow. Full platform control from your terminal.

Open source

Cloud Guardian is open source. Contributions, issues, and feature requests are welcome.