Borrowing it
Nothing to install: this file belongs to jonathan-vella/apex-accelerator. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jonathan-vella/apex-accelerator/main/.github/instructions/iac-terraform-best-practices.instructions.mdgit clone --depth 1 https://github.com/jonathan-vella/apex-acceleratorWrote 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/instructions/jonathan-vella/apex-accelerator/iac-terraform-best-practices)<a href="https://agentmods.dev/instructions/jonathan-vella/apex-accelerator/iac-terraform-best-practices"><img src="https://agentmods.dev/badge/instructions/jonathan-vella/apex-accelerator/iac-terraform-best-practices/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/instructions/jonathan-vella/apex-accelerator/iac-terraform-best-practices"><img src="https://agentmods.dev/badge/instructions/jonathan-vella/apex-accelerator/iac-terraform-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.01184 | $0.01184 |
| Opus 5.5 | $0.00474 | $0.00474 |
| Sonnet 5.5 | $0.00237 | $0.00237 |
| Haiku 4.5 | $0.00118 | $0.00118 |
Grade A, and why
apex-accelerator iac-terraform-best-practices.instructions.md 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Terraform Best Practices
Azure values are canonical in Copilot instructions; shared naming, AVM, and security procedures live in apex-azure-defaults. This file covers Terraform-specific patterns. Discovered policy constraints always take precedence.
Policy and Security
Azure Policy always wins. Code adapts to policy, never the reverse.
Cross-reference 04-governance-constraints.json before writing templates; use
azurePropertyPath (not bicepPropertyPath) for Terraform argument mapping. Shared rules:
references/iac-security-baseline.md and references/iac-policy-compliance.md
(checklist, resource type mapping and azurePropertyPath → Terraform argument tables).
Provider and Backend
| Rule | Standard |
|---|---|
| Provider | Pin azurerm to ~> 4.0, azapi ~> 2.12 (when used), random ~> 3.0 |
| Terraform | >= 1.11 (current AVM-TF Key Vault and AKS modules require it) |
| State backend | Azure Storage Account — never HCP Terraform Cloud |
azurerm stays on 4.x until the AVM-TF modules APEX composes accept 5.x; see
avm-provider-compatibility.md.
Never use terraform { cloud {} } or reference TFE_TOKEN.
File Structure
| File | Purpose |
|---|---|
main.tf |
Root module resources and module calls |
variables.tf / outputs.tf |
Input/output declarations |
providers.tf / versions.tf |
Provider and required_providers blocks |
locals.tf |
Local value computations |
backend.tf |
Remote state backend configuration |
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.
- 6d ago Changed · -2 tokens per session 47fd9efce267
- 18d ago Changed · +3 lines · +84 tokens per session b8aac7df9886
- 1mo ago Changed · -20 lines · -137 tokens per session 2c7a2b0e31da
- 1mo ago Changed · +1 lines · +78 tokens per session 1d1586f09e19
- 1mo ago First seen · 123 lines · 1,161 tokens per session scan A 1c37eab6df78
apex-accelerator iac-terraform-best-practices.instructions.md is an instructions file published in the GitHub repository jonathan-vella/apex-accelerator (50 stars, last pushed yesterday), licensed MIT. It adds 1,184 tokens to every session, about $0.0047 per session on Opus 5.5. 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 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.