PRIVATE BETA · WAITLIST OPEN

Cost while you code.

Name: CARTIE AI
Author: CARTIE AI

The CARTIE AI extension shows the monthly $ cost of every cloud resource as a CodeLens, right inside VS Code. No need to leave your editor, run a separate plan, or guess. Limited private beta · seats opening on a rolling basis — free forever for individual engineers and open-source teams.

Inline cost annotations for Terraform, Pulumi and AWS CDK resources
"Why this resource is expensive" hover hints with cheaper alternatives
Diff view — sees your edits and shows the cost delta vs. the file on disk
Zero secrets — calls our public, no-auth pricing API just like the GitHub Action
Free for individual engineers and open-source teams, forever

Download .vsix (Beta)Source on GitHub

Built end-to-end · cartie-cost-lens-0.9.0.vsix MIT-licensed

Same pricing engine that powers the public PR-Cost Predictor and the GitHub Actions snippet. Now in your editor.

main.tf

  1 resource "aws_db_instance" "analytics" {
  2   instance_class    = "db.r5.4xlarge"  // ≈ $1,152/mo
  3   allocated_storage = 2000             // ≈ $230/mo gp3
  4   multi_az          = true             // 2× → ≈ $1,152/mo extra
  5   engine            = "postgres"
  6 }
  7 
  8 resource "aws_instance" "api_worker" {
  9   instance_type = "c5.4xlarge"      // ⚠ $496/mo · was c5.xlarge ($124/mo)
 10   count         = 3
 11 }

Total: ≈ $4,022/mo·+$1,116/mo since last save·CARTIE AI · us-east-1 on-demand

Mockup — coming Q2 2026

Where we are honestly

✓ Live today

Public Terraform pricing API, GitHub Actions snippet, PR-Cost Predictor — the same calculator the extension will use.

⊙ Building now

The VS Code language-server integration, hover hints, and Pulumi/CDK parsers. Co-built with our first 10 design partners.

— Not yet

VS Code Marketplace listing, IntelliJ counterpart, Helm/Kustomize support. We'll ship them in that order.

Want it on every PR today? Use the GitHub Actions snippet.

Same pricing engine, no waitlist required. 10 lines of YAML, posts the cost delta as a PR comment using your repo's built-in GITHUB_TOKEN.

Cost while you code.

Install CARTIE AI