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Terrashark — Terraform/OpenTofu Failure-Mode Workflow

A step-by-step skill that diagnoses common Terraform/OpenTofu failure modes and proposes fixes with explicit risk controls.

Dev & CodingIntermediate★ 716⑂ 27AI score 8/10Last updated: Sep 17, 2026

What it does

  • Forces you to capture execution context first: runtime (terraform vs tofu), exact version, providers, state backend, execution path (local CLI, CI, HCP/TFE, Atlantis) and environment criticality.
  • Diagnoses one or more of five failure modes: identity churn, secret exposure, blast radius, CI drift, and compliance gate gaps.
  • Loads only the relevant reference docs, with conditional docs triggered by detected backends or providers to keep context lean.
  • For every fix, states why it works, what could still break, and the guardrails (tests, approvals, rollback).
  • Produces real artifacts: HCL with typed vars and pinned versions, moved/import migration plans, plan-apply-separated CI pipelines, and policy/compliance controls.

Who it's for

  • DevOps and platform engineers running Terraform or OpenTofu in production
  • Tech leads reviewing AI-generated IaC who want a repeatable safety checklist
  • Anyone about to migrate a state backend, refactor modules, or harden an IaC pipeline

Example uses

  1. "Refactor this module to use for_each" → flags resource re-creation risk and drafts a moved block migration plan.
  2. "Move my state from local to S3" → pulls the backend-state-safety reference and walks through locking, backup, restore, and verification commands.
  3. "Write a GitHub Actions workflow for Terraform" → generates plan/apply separation, plan artifacts, approval gates, and version pinning.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/LukasNiessen/terrashark/HEAD/SKILL.md

What I want: (describe your task here)

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↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the SKILL.m folder from the GitHub repo LukasNiessen/terrashark into my ~/.claude/skills/terrashark/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/LukasNiessen/terrashark.git ~/.claude/skills/terrashark

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Create the skills directory if needed: mkdir -p ~/.claude/skills
  3. Clone the full repo (the reference files are required): git clone https://github.com/LukasNiessen/terrashark.git ~/.claude/skills/terrashark
  4. Confirm both SKILL.md and the references/ folder exist inside the new directory.
  5. Restart Claude Code, then ask something like "review this Terraform module" to trigger the skill.
  6. To scope it to a single project, copy the folder into that project's .claude/skills directory instead.
View source on GitHub ↗License: MIT