CostPilot – Terraform cost diffs at PR time without cloud dependencies

Summary: CostPilot is a local CLI tool that estimates infrastructure cost changes from Terraform plans before merge. It processes terraform show -json output offline using embedded pricing data, providing fast, deterministic cost feedback during code review without relying on cloud APIs, IAM roles, or network access.

What it does

CostPilot analyzes Terraform plan outputs to calculate cost deltas entirely offline using deterministic heuristics and embedded pricing data. It avoids runtime cloud API calls and runs efficiently in CI environments.

Who it's for

It is designed for developers and teams who want early cost feedback during code review before infrastructure changes are deployed.

Why it matters

It shifts cost estimation to the pre-merge stage, enabling reversible infrastructure decisions and avoiding post-deployment billing surprises.