Every time your team opens a pull request that changes Terraform, Kubernetes, Bicep, or any other IaC file, reviewers face the same problem: they have to mentally simulate what the code change does to the actual infrastructure. The InfraSketch GitHub Action solves this by automatically posting a clickable architecture diagram link in the PR comment — no secrets, no paid plan, no setup beyond a single workflow file.

View on GitHub Marketplace Free, no secrets needed. Works with Terraform, Bicep, Pulumi, Kubernetes, CloudFormation, CDK, and Docker Compose. Install the Action →

What the action does

When a contributor opens or updates a pull request, the action:

Reads the list of changed files from the GitHub API

Filters for IaC files — .tf , .bicep , terragrunt.hcl , Kubernetes YAML, CloudFormation templates, Pulumi TypeScript/Python, and Docker Compose files

Reads each file's content and auto-detects its format

Encodes the content into a shareable infrasketch.cloud URL

Posts a PR comment with a table…