Terraform and OpenTofu Guide
agentscope-ai/QwenPaw
Guidance for writing and testing Terraform and OpenTofu code: module structure, naming, test approaches, CI/CD workflows, state handling and security scanning.
Agent skill
Building Terraform Modules
by jeremylongshore in jeremylongshore/tons-of-skills-marketplace
Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications.
Install Building Terraform Modules
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modules --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/building-terraform-modules .claude/skills/building-terraform-modules && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .claude/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modulesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modules --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.curated/building-terraform-modules .agents/skills/building-terraform-modules && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .agents/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modules --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.curated/building-terraform-modules .cursor/skills/building-terraform-modules && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .cursor/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jeremylongshore/tons-of-skills-marketplace.git --path skills/.curated/building-terraform-modules--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modules --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.curated/building-terraform-modules .gemini/skills/building-terraform-modules && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .gemini/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modulesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.curated/building-terraform-modules .github/skills/building-terraform-modules && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .github/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace building-terraform-modules --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.curated/building-terraform-modules .opencode/skills/building-terraform-modules && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "building-terraform-modules" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/building-terraform-modules into .opencode/skills/building-terraform-modules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "building-terraform-modules", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
building-terraform-modules- GitHub stars
- 2.8k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 445 words
- Files
- 5 (incl. scripts, references, assets)
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications.
- Works in 10 steps: Define the module scope: determine which… → Create the standard module file… → Write versions.tf with required_version… → …
- Appropriate context detected
- SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 3 more sections
- Calls terraform
What it does
Building Terraform Modules is an agent skill from jeremylongshore/tons-of-skills-marketplace. Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications. it leverages the terraform-module-builder plugin to generate production-ready, well-documented terraform module code, incorporating best practices for sec... Use when appropriate context detected. Trigger with relevant phrases based on skill purpose.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts, reference files and assets (for example `assets/README.md`, `assets/validation_rules.json` and `references/README.md`). Compatibility notes: Designed for Claude Code
It sits in DevOps & Cloud, covering Infrastructure as code. It works with Terraform. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.
When your agent uses it
- Appropriate context detected
- With relevant phrases based on skill purpose
Example prompts
- “/building-terraform-modules”
Requirements
- Compatibility (from SKILL.md): Designed for Claude Code
- Pre-approved tools (allowed-tools): Read, Write, Edit, Grep, Glob, Bash(cmd:*)
Workflow steps
10 steps, taken from the first numbered list in SKILL.md.
- Define the module scope: determine which cloud resources the module manages and its input/output contract
- Create the standard module file structure: main.tf, variables.tf, outputs.tf, versions.tf, locals.tf
- Write versions.tf with required_version and required_providers blocks pinned to stable versions
- Define input variables in variables.tf with descriptions, types, defaults, and validation rules
- Implement resources in main.tf using variables for all configurable values; use locals for computed values
- Add meaningful outputs in outputs.tf for resource IDs, ARNs, endpoints, and connection strings
- Implement security defaults: encryption enabled, public access blocked, least-privilege IAM, logging enabled
- Create an examples/ directory with at least one complete usage example showing module invocation
- Generate documentation with terraform-docs markdown table . > README.md
- Validate the module with terraform init && terraform validate and test with terraform plan using the example
What it can do on your machine
Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteEditGrepGlobBash(cmd:*)
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/, which the agent can run.
Shell commands in SKILL.md call:
terraform
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
developer.hashicorp.comregistry.terraform.ioterraform-docs.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Designed for Claude Code
From compatibility in the SKILL.md frontmatter.
Context cost
Building Terraform Modules loads about 1.1k tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 96 tokens; SKILL.md has 445 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 445 words, ~1,113 tokens.
Download SKILL.mdSave it as
.claude/skills/building-terraform-modules/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- building-terraform-modules
- description
- Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications. it leverages the terraform-module-builder plugin to generate production-ready, well-documented terraform module code, incorporating best practices for sec... Use when appropriate context detected. Trigger with relevant phrases based on skill purpose.
- allowed-tools
- Read, Write, Edit, Grep, Glob, Bash(cmd:*)
- compatibility
- Designed for Claude Code
- version
- 1.23.0
- author
- Jeremy Longshore <jeremy@intentsolutions.io>
- license
- MIT
- tags
- devops, terraform, terraform-modules
Building Terraform Modules
Overview
Build reusable, production-ready Terraform modules with proper variable definitions, outputs, validation rules, documentation, and examples. Generate modules following HashiCorp's standard module structure for AWS, GCP, and Azure resources with security best practices, tagging conventions, and lifecycle management.
Prerequisites
- Terraform 1.0+ installed (
terraform version) - Cloud provider credentials configured for the target platform
- Understanding of the infrastructure resources the module will manage
- Familiarity with HCL syntax and Terraform module conventions
terraform-docsinstalled for automated documentation generation (optional)
Instructions
- Define the module scope: determine which cloud resources the module manages and its input/output contract
- Create the standard module file structure:
main.tf,variables.tf,outputs.tf,versions.tf,locals.tf - Write
versions.tfwithrequired_versionandrequired_providersblocks pinned to stable versions - Define input variables in
variables.tfwith descriptions, types, defaults, and validation rules - Implement resources in
main.tfusing variables for all configurable values; uselocalsfor computed values - Add meaningful outputs in
outputs.tffor resource IDs, ARNs, endpoints, and connection strings - Implement security defaults: encryption enabled, public access blocked, least-privilege IAM, logging enabled
- Create an
examples/directory with at least one complete usage example showing module invocation - Generate documentation with
terraform-docs markdown table . > README.md - Validate the module with
terraform init && terraform validateand test withterraform planusing the example
Output
- Module files:
main.tf,variables.tf,outputs.tf,versions.tf,locals.tf - Example usage in
examples/basic/main.tfwith realistic variable values - Auto-generated
README.mdwith inputs, outputs, and usage documentation .terraform-docs.ymlconfiguration for documentation generation- Optional: test files using Terratest or
terraform test(HCL-based)
Show full SKILL.md (191 more words)Show less
Error Handling
| Error | Cause | Solution |
|---|---|---|
variable validation failed | Input value does not meet validation rule | Check the validation block in variables.tf; adjust the value or the validation regex |
provider not found | Missing or wrong provider source in versions.tf | Add the provider to required_providers with correct source and version constraint |
circular dependency | Resources referencing each other in a loop | Refactor to break the cycle; use depends_on or separate into sub-modules |
output references undeclared resource | Typo in resource name or resource removed | Verify resource names in main.tf match output references exactly |
module source not found | Incorrect module path or registry reference | Verify the source path is relative (e.g., ./modules/vpc) or a valid registry address |
Examples
- "Build a Terraform module for an AWS VPC with configurable CIDR, public/private subnets across 3 AZs, NAT gateway, and flow logs."
- "Create a GCP Cloud Run module with custom domain, IAM bindings, and auto-scaling configuration as input variables."
- "Generate a Terraform module for an S3 bucket with versioning, encryption, lifecycle rules, and access logging, with all settings as optional variables with secure defaults."
Resources
- Terraform module registry: https://registry.terraform.io/
- Module structure guide: https://developer.hashicorp.com/terraform/language/modules/develop/structure
- terraform-docs: https://terraform-docs.io/
- Module best practices: https://developer.hashicorp.com/terraform/language/modules/develop
© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files (scripts, references, assets) in skills/.curated/building-terraform-modules of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- assets/README.md
- assets/validation_rules.json
- references/README.md
- scripts/README.md
Open the folder on GitHubat commit cfae287
Compare with similar skills
Building Terraform Modules next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Building Terraform Modules this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Terraform and OpenTofu Guideagentscope-ai/QwenPaw | 36k | 6 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Terraform Skillantonbabenko/terraform-skill | 2.4k | 1 repos | ~5.1k | Automated safety check: Pass | Apache-2.0 | |
| Review Docshashicorp/terraform-provider-aws | 11k | — | ~1.3k | Automated safety check: Pass | MPL-2.0 | |
| Senior DevOps Toolkitmaslennikov-ig/claude-code-orchestrator-kit | 260 | 6 repos | ~1.1k | Automated safety check: Notes | Custom licence | |
| Cloudflarehodgef/apiker | 127 | 7 repos | ~2.2k | Automated safety check: Pass | MIT |
Similar skills
Terraform Skill
antonbabenko/terraform-skill
A skill your agent uses when writing, reviewing, or debugging Terraform/OpenTofu modules, tests, CI, scans, or state ops - diagnoses failure mode (identity churn, secrets, blast radius, CI drift…
- Official
Review Docs
hashicorp/terraform-provider-aws
Review a Terraform AWS Provider PR's end-user documentation (website/docs//.markdown): whether docs are needed, description openings, argument/attribute style, section structure, tags wording, code…
Senior DevOps Toolkit
maslennikov-ig/claude-code-orchestrator-kit
Comprehensive DevOps skill for CI/CD, infrastructure automation, containerization, and cloud platforms (AWS, GCP, Azure). Includes pipeline setup…
Cloudflare
hodgef/apiker
Comprehensive Cloudflare platform skill covering Workers, Pages, storage (KV, D1, R2), AI (Workers AI, Vectorize, Agents SDK), feature flags (Flagship), networking (Tunnel, Spectrum), security (WAF…
Terravision Cloud Diagrams
patrickchugh/terravision
Draw cloud architecture diagrams for AWS, Azure or GCP with the official provider icon sets, using TerraVision.
More from jeremylongshore/tons-of-skills-marketplace
All 3,342 skills in this repoPerforming Security Code Review
jeremylongshore/tons-of-skills-marketplace
Execute this skill enables AI assistant to conduct a security-focused code review using the security-agent plugin.
Adapting Transfer Learning Models
jeremylongshore/tons-of-skills-marketplace
Build this skill automates the adaptation of pre-trained machine learning models using transfer learning techniques.
Agent Context Loader
jeremylongshore/tons-of-skills-marketplace
Execute proactive auto-loading: automatically detects and loads agents.md files.
Aggregating Performance Metrics
jeremylongshore/tons-of-skills-marketplace
Aggregate and centralize performance metrics from applications, systems, databases, caches, and services.
Analyzing Capacity Planning
jeremylongshore/tons-of-skills-marketplace
Execute this skill enables AI assistant to analyze capacity requirements and plan for future growth.
Analyzing Database Indexes
jeremylongshore/tons-of-skills-marketplace
Process use when you need to work with database indexing. An agent skill from jeremylongshore/tons-of-skills-marketplace.
Related
Works with
Categories
Questions about Building Terraform Modules
What does Building Terraform Modules do?
Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications. Building Terraform Modules is an agent skill from jeremylongshore/tons-of-skills-marketplace. Execute this skill empowers AI assistant to build reusable terraform modules based on user specifications.
When should I use Building Terraform Modules?
Building Terraform Modules fits situations like: appropriate context detected; with relevant phrases based on skill purpose.
How do I install Building Terraform Modules in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a claude-code`. Or copy the skill folder (skills/.curated/building-terraform-modules in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/building-terraform-modules in your project. Claude Code loads it when a task matches its description.
How do I install Building Terraform Modules in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a codex`. Or copy the skill folder (skills/.curated/building-terraform-modules in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/building-terraform-modules in your project. Codex loads it when a task matches its description.
Can I use Building Terraform Modules in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-terraform-modules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/building-terraform-modules, .gemini/skills/building-terraform-modules, .github/skills/building-terraform-modules and .opencode/skills/building-terraform-modules in your project.
What does Building Terraform Modules need to run?
Going by SKILL.md and its folder, Building Terraform Modules needs the command-line tools its instructions call (terraform). Its frontmatter pre-approves these tools: Read, Write, Edit, Grep, Glob, Bash(cmd:*). Compatibility (from SKILL.md): Designed for Claude Code.
Does Building Terraform Modules access the network?
SKILL.md names 3 domains. As links in the text: developer.hashicorp.com, registry.terraform.io and terraform-docs.io. This is read from the text; nothing was executed.
Is Building Terraform Modules safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Building Terraform Modules use?
Building Terraform Modules is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Building Terraform Modules use?
About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 17 tokens, read only when the agent opens those files.
What are the alternatives to Building Terraform Modules?
Skills that share tags, products or a category with Building Terraform Modules: Terraform and OpenTofu Guide (agentscope-ai/QwenPaw, 36k stars), Terraform Skill (antonbabenko/terraform-skill, 2.4k stars), Review Docs (hashicorp/terraform-provider-aws, 11k stars) and Senior DevOps Toolkit (maslennikov-ig/claude-code-orchestrator-kit, 260 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Building Terraform Modules?
jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.
Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.