---
name: "terraform-module-authoring"
description: "Author reusable, enterprise Terraform modules with strict input typing and dynamic blocks."
metadata:
  author: "HashiCorp"
  version: "1.0.0"
  runtime_compatibility:
    - "codex"
    - "claude-code"
    - "cursor"
    - "windsurf"
triggers:
  - "author reusable terraform module"
  - "use terraform dynamic blocks"
  - "terraform variable validation"
permissions:
  fs_read: true
  fs_write: "workspace"
  shell_exec: false
  net_access: false
---

# Terraform Modular Architecture & Dynamic Blocks

Structures Terraform modules: defining variables.tf with validation blocks, outputs.tf with sensitive flags, dynamic blocks (dynamic 'ingress'), ternary conditionals, and module semantic versioning.

## When to Invoke
Invoke this skill whenever you need to:
- author reusable terraform module
- use terraform dynamic blocks
- terraform variable validation

## Execution SOP & Rules
1. Organize module into main.tf, variables.tf, outputs.tf, and versions.tf.
2. Enforce validation conditions on variables with clear descriptive error messages.
3. Tag all provisioned resources consistently using a merged local.common_tags map.
4. Run terraform fmt -check and terraform validate to guarantee syntax correctness.

## Verification Checklist
- Run local linting, syntax validation, and type-checks before reporting completion.
- Ensure all created or modified files adhere to workspace boundaries and avoid uncommitted secrets.
- Verify tests or build commands exit cleanly with return code 0.