agents-template: Instructions file for Codex

AGENTS.md

agents-template AGENTS.md is an instructions file for Codex, OpenCode from pedrofuentes/agents-template. It costs 2,036 tokens per session, scanned A, original, MIT.

A template for configuring autonomous AI coding agents through Markdown instructions and quality checks. It includes TDD, or test-driven development, which means writing tests before the code they check.

In plain words
What is it for?
Use it when creating or maintaining agent instruction templates, quality gates, TDD requirements, or the Sentinel review system.
Why use it?
It helps projects apply consistent rules, verify changes against real agent behavior, and keep reusable instruction files valid.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions subagents; mentions AGENTS.md.

This is pedrofuentes/agents-template's own configuration. It tells Codex and OpenCode how to work on agents-template 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 agents-template configures →

Reuse

Borrowing it

Nothing to install: this file belongs to pedrofuentes/agents-template. 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/pedrofuentes/agents-template/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/pedrofuentes/agents-template

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
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Per session 2,036 This file is loaded in full into every session.
When invoked 2,036 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 $0.02036 $0.02036
Opus 5.5 $0.00814 $0.00814
Sonnet 5.5 $0.00407 $0.00407
Haiku 4.5 $0.00204 $0.00204

Measured 2mo ago against content hash 753c52306462, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agents-template 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 · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — agents-template

You are a disciplined engineer working on a template system for AI coding agents. This is a documentation/template project — not a traditional codebase. Your output is instructions that OTHER agents will follow. Every word you write affects agent compliance across all projects that adopt this template.

Three invariants:

  1. Never break the template — template/ files must always be valid for adoption
  2. Every change must be verified against real-world agent behavior
  3. Compression matters — every line in AGENTS.md and SENTINEL.md must earn its place

Project Overview

agents-template — A template system for configuring autonomous AI coding agents with quality gates, TDD enforcement, and the Sentinel review system.

Structure

agents-template/
├── AGENTS.md                          ← THIS FILE (repo-specific rules)
├── README.md                          ← For humans browsing GitHub
├── CHANGELOG.md                       ← Version history (semver) + evolution history
├── SYNC.md                            ← Downstream sync manifest (repos + last-synced versions)
├── LICENSE                            ← MIT
├── docs/                              ← GitHub Pages website
│   └── index.html                     ← Landing page (self-contained)
├── .github/workflows/
│   ├── deploy-pages.yml               ← Auto-deploys docs/ to GitHub Pages
│   └── validate.yml                   ← Runs scripts/validate.sh on every PR / push to main
├── scripts/
│   └── validate.sh                    ← Automated repo checks (version sync, budgets, cross-refs, …)
├── evals/                             ← Behavioral regression tests for the Sentinel ruleset
│   ├── README.md                      ← Coverage matrix + scoring rules
│   ├── RUNNER.md                      ← Runner prompt (dim-level + end-to-end lanes)
│   └── fixtures/                      ← Synthetic PR diffs + expected verdicts (14 fixtures)
└── template/                          ← What users copy into their projects
    ├── AGENTS.md                      ← THE TEMPLATE (with setup block + placeholders)
    ├── SETUP.md                       ← Placeholder inventory (deleted after setup)
    ├── ROADMAP.md, LEARNINGS.md, DECISIONS.md, CHANGELOG.md
    └── docs/
        ├── SENTINEL.md                ← Quality gate specification
        ├── ARCHITECTURE.md, TESTING-STRATEGY.md, DEVELOPMENT-WORKFLOW.md
        └── sentinel/                  ← Dimension-specific sub-agent prompts
            ├── dim-a1-security-attacks.md, dim-a2-security-defenses.md
            ├── dim-b-resilience.md, dim-c-performance.md
            ├── dim-d-testing.md, dim-e-dependencies.md, dim-f-documentation.md
            ├── SEVERITY-RUBRIC.md         ← Phase 3 severity calibration (golden examples)
            └── BACKLOG-HYGIENE.md         ← Opt-in issue-backlog lifecycle (flag, never auto-close)

Read the full file on GitHub · 137 lines

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 · 137 lines · 2,036 tokens per session scan A 753c52306462

Subscribe to this mod's changes

agents-template AGENTS.md is an instructions file published in the GitHub repository pedrofuentes/agents-template (6 stars, last pushed 3mo ago), licensed MIT. It adds 2,036 tokens to every session, about $0.0081 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 2026-08-31.

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