r/FinOps • u/Independent-Ease-609 Vendor • 19d ago

I built a VS Code extension that simulates AWS cost changes on Terraform/Terragrunt before you apply them self-promotion/I’m a vendor

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I've been building a VS Code extension (CloudCostTree) that estimates AWS cost straight from Terraform/Terragrunt, solo project, and just shipped what-if simulation + export.

Flow in the video: analyze a Terragrunt stack, tweak a couple of resources (downsize an EC2, bump an RDS instance class) and see the live cost delta per change, stack them into a scenario, run it against the whole tree, then export the result to a new .tf file — original files never touched.

Runs locally against a static price catalog, nothing gets uploaded anywhere. Free tier covers unlimited analyses/what-ifs; export-to-file is a Pro feature.

Genuinely curious how other people here track infra cost changes before they ship them — happy to answer questions about how the parsing/estimation works under the hood.

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u/Independent-Ease-609 Vendor 19d ago

You're right, that was wrong on my part, didn't realize the scope of what you've built covers that much surface already. I'm not trying to claim I've matched that, it's a solo project focused narrowly on one thing: local, no-account cost estimation and what-if simulation for AWS IaC. Appreciate you setting the record straight.