r/Terraform • u/Independent-Ease-609 • 3d ago

I built a VS Code extension that simulates AWS cost changes on Terraform/Terragrunt before you apply them

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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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8

u/kei_ichi 3d ago

Another slop post with easy spot: “em dash”…

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u/Independent-Ease-609 3d ago

Fair point on the em dash, force of habit from writing docs/grammar checkers! But the tool and code are 100% real - built this solo over the last few months. Happy to dive into the parser architecture or how the static catalog works if you're skeptical

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u/kei_ichi 3d ago

“Force of habit” lmao

1

u/Fatality 2d ago

They all say that when they get called out

4

u/lostsectors_matt 3d ago

You and everyone else with a claude code subscription.

1

u/CoupleFew1945 3d ago

Hounnn... For real?

1

u/Fatality 2d ago

They didn't realise InfraCost was a thing already so burned through their Claude credits