analyze-plan

A command that examines a Terraform plan, which is a preview of infrastructure changes, before those changes are applied. It checks for security-sensitive changes, cost effects, destructive actions, and configuration drift.

In plain words
What is it for?
Use it to review an existing Terraform plan file or a saved plan before deployment. It is intended for repositories containing one or more Terraform components.
Why use it?
It helps reveal risky or unexpected infrastructure changes before running terraform apply. It also explains when a plan is missing and can ask before generating one.

Command

Part of the infra-review plugin — 7 skills, 7 commands, 5 agents, 2 hooks shipped together

Install

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.

agentmods
npx agentmods add commands/infraspecdev/tesseract/analyze-plan
Clone the repo
git clone --depth 1 https://github.com/infraspecdev/tesseract

Or install infra-review, the plugin that ships this one along with the rest of its 7 skills, 7 commands, 5 agents, 2 hooks.

Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 367 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00015 $0.00367
Opus 5 $0.00008 $0.00183
Sonnet 5 $0.00003 $0.00073
Haiku 4.5 $0.00002 $0.00037

Measured 3d ago against content hash d482ea0c7e83, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

analyze-plan scanned grade A with 0 findings 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 3d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

infra-review/commands/analyze-plan.md · 38 lines

What it actually says

Plan Analysis

Analyze a Terraform execution plan to surface security-sensitive changes, cost impacts, destructive actions, and drift before terraform apply.

Step 1: Detect Component

  1. Check if src/versions.tf exists → single-component repo, component at src/
  2. Check if components/terraform/ exists → multi-component repo, ask user which component
  3. Neither → report "This doesn't appear to be a Terraform component repository"

Step 2: Locate or Generate Plan

Check for plan sources in this order:

  1. User provided a file path → Read it directly as plan JSON
  2. plan.tfplan exists in component dir → Convert: terraform show -json plan.tfplan
  3. .terraform/ exists in component dir → Ask user before generating:

    "No plan file found. I can run terraform plan -json -lock=false to generate one. This is read-only and won't modify state. Proceed?"

  4. None of the above → Tell user:

    "No plan available. Either run terraform init && terraform plan -out=plan.tfplan first, or provide a plan JSON file path."

Step 3: Run Plan Analysis

Invoke the infra-review:terraform-plan-analyzer skill against the plan JSON.

IMPORTANT: Never run terraform apply. This is analysis only.

Step 4: Write Report

Write findings to claude/infra-review/plan-analysis.md in the repository root.

Present the change summary, any destructive warnings, security concerns, and the verdict to the user.

Changes

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.

  1. 3d ago First seen · 38 lines · 15 tokens per session scan A d482ea0c7e83

Subscribe to this mod's changes

analyze-plan is a command published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 2mo ago), licensed MIT. It adds 15 tokens to every session and 367 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.