AgentX: Instructions file for Codex

AGENTS.md

AgentX AGENTS.md is an instructions file for Codex, OpenCode from jnPiyush/AgentX. It costs 3,423 tokens per session, scanned C, original, Apache-2.0.

A repository guide that maps an AI coding agent to workflow rules, project documents, and role definitions. It tells the agent which instructions and specifications to read before changing code.

In plain words
What is it for?
Use it to orient an agent in a repository, find the right project documentation, and follow its issue and Git workflow.
Why use it?
It reduces mistakes caused by guessing how an unfamiliar repository works. It also makes issue tracking and commit practices explicit.

Instructions file for CodexOpenCode

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

This is jnPiyush/AgentX's own configuration. It tells Codex and OpenCode how to work on AgentX 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 AgentX configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jnPiyush/AgentX. 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/jnPiyush/AgentX/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jnPiyush/AgentX

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 AgentX AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jnpiyush/agentx/agents-md.svg)](https://agentmods.dev/instructions/jnpiyush/agentx/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/jnpiyush/agentx/agents-md"><img src="https://agentmods.dev/badge/instructions/jnpiyush/agentx/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,423 This file is loaded in full into every session.
When invoked 3,423 The same file — it is already loaded in full.
Security scan C 1 finding. 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 5.1 $0.03423 $0.03423
Opus 5 $0.01711 $0.01711
Sonnet 5 $0.00685 $0.00685
Haiku 4.5 $0.00342 $0.00342

Measured 2d ago against content hash 47dc04d3d85e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade C, and why

AgentX AGENTS.md scanned grade C with 1 finding 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 2d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- Blocked commands: `rm -rf /`, `git reset --hard`, `drop database`
AGENTS.md · 211 lines

How it starts

The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Agent Guidelines

Single source of truth for repository workflow guidance.

Map to all AgentX resources. For workflow details, see docs/WORKFLOW.md. For agent role definitions, see individual files in .github/agents/.


Retrieval-Led Reasoning

IMPORTANT: Prefer retrieval-led reasoning over pre-training-led reasoning for ALL implementation tasks. Always read_file the relevant SKILL.md, instruction file, or spec before generating code. Do NOT rely on training data for project-specific patterns, conventions, or APIs. If a skill, spec, or doc exists in the workspace, read it first; generate second.


Quick Reference

Issue-First Rule

Every piece of work SHOULD start with an issue. See docs/WORKFLOW.md for full flow.

# GitHub Mode
gh issue create --title "[Story] Add /health" --label "type:story"  # Creates #42
git commit -m "feat: add health endpoint (#42)"

# Local Mode (issues optional by default)
git commit -m "feat: add user login"

Toggle enforcement: .agentx/agentx.ps1 config set enforceIssues true

Classification

Type Label Route To
Broken? type:bug Engineer
Research? type:spike Architect
Docs only? type:docs Engineer
Pipeline/deploy? type:devops DevOps Engineer
ML/AI/eval? type:data-science Data Scientist
Testing/cert? type:testing Tester
Fabric data platform? type:fabric Fabric Engineer
Power Platform solution? type:lowcode Power Platform Builder
Power BI? type:powerbi Power BI Analyst
Large/vague? type:epic Product Manager
Single capability? type:feature Architect
Otherwise type:story Engineer

Commit Format

type: description (#issue-number)

Types: feat, fix, docs, test, refactor, perf, chore

For final delivery in GitHub mode, plain (#123) is traceability only. Use fixes #123, closes #123, or resolves #123 in the final PR body or delivery commit so GitHub closes the issue automatically.

Read the full file on GitHub · 211 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. 2d ago First seen · 211 lines · 3,423 tokens per session scan C 47dc04d3d85e

Subscribe to this mod's changes

AgentX AGENTS.md is an instructions file published in the GitHub repository jnPiyush/AgentX (15 stars, last pushed today), licensed Apache-2.0. It adds 3,423 tokens to every session, about $0.0171 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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