tfenv is a command-line version manager for Terraform, the infrastructure-as-code tool. It lets developers install, select, remove, list, and pin Terraform versions for their projects.
Borrowing it
Nothing to install: this file belongs to tfutils/tfenv. 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/tfutils/tfenv/master/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/tfutils/tfenvWrote 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/tfutils/tfenv/copilot-instructions)<a href="https://agentmods.dev/instructions/tfutils/tfenv/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/tfutils/tfenv/copilot-instructions/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/tfutils/tfenv/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/tfutils/tfenv/copilot-instructions.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 | $0.00232 | $0.00232 |
| Opus 5.5 | $0.00093 | $0.00093 |
| Sonnet 5.5 | $0.00046 | $0.00046 |
| Haiku 4.5 | $0.00023 | $0.00023 |
Grade A, and why
tfenv copilot-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 2mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- tfscaffold copilot-instructions.md — 91% identical, 2 lines differ
What it actually says
Copilot Instructions — tfenv
This file is intentionally minimal. The canonical source for project
architecture, conventions, and agent guidelines is AGENTS.md
at the repository root.
Auto-Loaded Instructions
Language-specific coding standards are in .github/instructions/ and use
applyTo frontmatter to load automatically when editing matching files:
| File | Applies To | Purpose |
|---|---|---|
bash.instructions.md |
**/*.sh |
Bash coding standards |
Agent Definitions
Agent definitions live in .github/agents/ as .agent.md files. Each agent
has a YAML frontmatter block with description, tools, model, and
argument-hint fields.
Key References
- AGENTS.md — master context: project overview, core principles, conventions, work type ownership, essential commands
- SECURITY.md — vulnerability reporting policy
- docs/adr/ — Architecture Decision Records
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.
- 2mo ago First seen · 28 lines · 232 tokens per session scan A b21b5e0b8e8d
tfenv copilot-instructions.md is an instructions file published in the GitHub repository tfutils/tfenv (4,991 stars, last pushed 4mo ago), licensed MIT. It adds 232 tokens to every session, about $0.0009 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.
tfenv copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| tfenv copilot-instructions.mdtfutils/tfenv | Instructions file | 5.0k | 4mo ago | MIT | A | 232 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |