openspec-for-copilot: Instructions file for Codex

AGENTS.md

openspec-for-copilot AGENTS.md is an instructions file for Codex, OpenCode from atman-33/openspec-for-copilot. It costs 95 tokens per session, scanned A, original, MIT.

Repository instructions for a VS Code extension that gives GitHub Copilot users a guided workflow based on written specifications. They point to policies for development, testing, review, and deployment.

In plain words
What is it for?
They are for checking coding standards, branch and commit rules, testing expectations, review criteria, and deployment procedures.
Why use it?
They help contributors follow the project’s defined engineering and release practices.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is atman-33/openspec-for-copilot's own configuration. It tells Codex and OpenCode how to work on openspec-for-copilot itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything openspec-for-copilot configures →

Reuse

Borrowing it

Nothing to install: this file belongs to atman-33/openspec-for-copilot. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/atman-33/openspec-for-copilot/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/atman-33/openspec-for-copilot

Made for: Codex, OpenCode.

Wrote 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.

agentmods badge for openspec-for-copilot AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/atman-33/openspec-for-copilot/agents-md/github.svg)](https://agentmods.dev/instructions/atman-33/openspec-for-copilot/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/atman-33/openspec-for-copilot/agents-md"><img src="https://agentmods.dev/badge/instructions/atman-33/openspec-for-copilot/agents-md/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.

agentmods 80×15 button for openspec-for-copilot AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/atman-33/openspec-for-copilot/agents-md"><img src="https://agentmods.dev/badge/instructions/atman-33/openspec-for-copilot/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 This file is loaded in full into every session.
When invoked 95 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00095 $0.00095
Opus 5.5 $0.00038 $0.00038
Sonnet 5.5 $0.00019 $0.00019
Haiku 4.5 $0.00010 $0.00010

Measured 2mo ago against content hash aff72ce7fe2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openspec-for-copilot AGENTS.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.

AGENTS.md · 10 lines

What it actually says

Software Development Policies

  • docs/policies/development-policy.md: Coding standards, branch strategy, commit message conventions, and more
  • docs/policies/testing-policy.md: Testing strategy, coverage targets
  • docs/policies/review-policy.md: Code review criteria, checklists
  • docs/policies/deployment-policy.md: Deployment procedures, CI/CD pipeline
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. 2mo ago First seen · 10 lines · 95 tokens per session scan A aff72ce7fe2c

Subscribe to this mod's changes

openspec-for-copilot AGENTS.md is an instructions file published in the GitHub repository atman-33/openspec-for-copilot (22 stars, last pushed 5mo ago), licensed MIT. It adds 95 tokens to every session, about $0.0004 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.

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