HashiCorp Agent Skills is a collection of reusable instructions and plugins that help coding agents work with Terraform and Packer. Developers use it to add HashiCorp product workflows to supported coding-agent tools, either individually or as product bundles.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add hashicorp/agent-skills --skill terraform-stacksgit clone --depth 1 https://github.com/hashicorp/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/hashicorp/agent-skills/terraform-stacks)<a href="https://agentmods.dev/skills/hashicorp/agent-skills/terraform-stacks"><img src="https://agentmods.dev/badge/skills/hashicorp/agent-skills/terraform-stacks/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/hashicorp/agent-skills/terraform-stacks"><img src="https://agentmods.dev/badge/skills/hashicorp/agent-skills/terraform-stacks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 313 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 329 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 341 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 324 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 334 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 395 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.03715 |
| Opus 5 | $0.00039 | $0.01858 |
| Sonnet 5 | $0.00015 | $0.00743 |
| Haiku 4.5 | $0.00008 | $0.00371 |
Grade A, and why
terraform-stacks scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Artifacts endpoint returns HTTP 307 redirect (use `curl -L`) Copies of this mod
3 near-identical copies found in the catalogue:
- terraform-stacks — 95% identical, 1 lines differ
- terraform-stacks — 95% identical, 3 lines differ
- terraform-stacks — 95% identical, 3 lines differ
How it starts
The opening of the file, as written. The whole thing — 482 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Terraform Stacks
Terraform Stacks simplify infrastructure provisioning and management at scale by providing a configuration layer above traditional Terraform modules. Stacks enable declarative orchestration of multiple components across environments, regions, and cloud accounts.
Core Concepts
Stack: A complete unit of infrastructure composed of components and deployments that can be managed together.
Component: An abstraction around a Terraform module that defines infrastructure pieces. Each component specifies a source module, inputs, and providers.
Deployment: An instance of all components in a stack with specific input values. Use deployments for different environments (dev/staging/prod), regions, or cloud accounts.
Stack Language: A separate HCL-based language (not regular Terraform HCL) with distinct blocks and file extensions.
File Structure
Terraform Stacks use specific file extensions:
- Component configuration:
.tfcomponent.hcl - Deployment configuration:
.tfdeploy.hcl - Provider lock file:
.terraform.lock.hcl(generated by CLI)
All configuration files must be at the root level of the Stack repository. HCP Terraform processes all files in dependency order.
Recommended File Organization
my-stack/
├── .terraform-version # The required Terraform version for this Stack
├── variables.tfcomponent.hcl # Variable declarations
├── providers.tfcomponent.hcl # Provider configurations
├── components.tfcomponent.hcl # Component definitions
├── outputs.tfcomponent.hcl # Stack outputs
├── deployments.tfdeploy.hcl # Deployment definitions
├── .terraform.lock.hcl # Provider lock file (generated)
└── modules/ # Local modules (optional - only if using local modules)
├── s3/
└── compute/
Note: The modules/ directory is only required when using local module sources. Components can reference modules from:
- Local file paths:
./modules/vpc - Public registry:
terraform-aws-modules/vpc/aws - Private registry:
app.terraform.io/<org-name>/vpc/aws - Git:
git::https://github.com/org/repo.git//path?ref=v1.0.0
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 482 lines · 77 tokens per session scan A 2ccf67ec4344
terraform-stacks is a skill published in the GitHub repository hashicorp/agent-skills (865 stars, last pushed 5d ago), licensed MPL-2.0. It adds 77 tokens to every session and 3,715 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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nemo-automodel-launcher-config
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azure-mgmt-botservice-dotnet
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