Terraform module

Skill minagayid/Agents/skills/library/terraform-module

Write clean, reusable Terraform modules and safe infrastructure changes. Use when the user asks to write Terraform/IaC, create a module, or review infrastructure code.From its SKILL.md

Install

npx -y skills add minagayid/Agents --skill terraform-module

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SKILL.md

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Terraform Module

Author Terraform that is reusable, reviewable, and safe to apply.

Module structure

module/
├── main.tf         # resources
├── variables.tf    # typed inputs with descriptions + validation
├── outputs.tf      # outputs consumers need
├── versions.tf     # required_version + provider version constraints
└── README.md       # purpose, inputs, outputs, example usage

Practices

Typed variables with description, sensible defaults, and validation blocks; mark secrets sensitive = true.
Pin versions — required_version and provider constraints; commit .terraform.lock.hcl.
Remote state with locking (e.g. S3 + DynamoDB, GCS, Terraform Cloud); never commit state or secrets.
No hard-coded values — parameterize via variables; keep environments in separate workspaces/dirs.
Least privilege IAM; tag resources; use for_each over count for stable addressing.
Composable — small modules with clear inputs/outputs; avoid provider config inside reusable modules.

Workflow (safe change)

terraform fmt and terraform validate.
terraform plan — read the plan; confirm no unexpected destroy/replace.
Apply to non-prod first; use -target sparingly and only knowingly.
Review drift; keep applies small and reversible.

Guidelines

Treat plan output as the review artifact — a resource being destroyed/recreated is a red flag.
Prefer data sources and outputs over duplicating values across modules.