nx-ai-agents-config: Instructions file for Codex

AGENTS.md

nx-ai-agents-config AGENTS.md is an instructions file for Codex, OpenCode from nrwl/nx-ai-agents-config. It costs 349 tokens per session, scanned A, original, MIT.

Project instructions for the Nx AI agents configuration repository, including rules for writing guidance that works across different AI assistants.

In plain words
What is it for?
Use them when editing the repository’s skills or agents, especially files under its artifacts directory.
Why use it?
They reduce confusion caused by assuming one assistant, tool format, or subagent system.

Instructions file for CodexOpenCode

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

This is nrwl/nx-ai-agents-config's own configuration. It tells Codex and OpenCode how to work on nx-ai-agents-config 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 nx-ai-agents-config configures →

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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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Per session 349 This file is loaded in full into every session.
When invoked 349 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 $0.00349 $0.00349
Opus 5 $0.00175 $0.00175
Sonnet 5 $0.00070 $0.00070
Haiku 4.5 $0.00035 $0.00035

Measured 10d ago against content hash 047c903c6af0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nx-ai-agents-config 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 10d 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 · 18 lines

What it actually says

General Guidelines for working with Nx

  • When running tasks (for example build, lint, test, e2e, etc.), always prefer running the task through nx (i.e. nx run, nx run-many, nx affected) instead of using the underlying tooling directly
  • You have access to the Nx MCP server and its tools, use them to help the user
  • When answering questions about the repository, use the nx_workspace tool first to gain an understanding of the workspace architecture where applicable.
  • When working in individual projects, use the nx_project_details mcp tool to analyze and understand the specific project structure and dependencies
  • For questions around nx configuration, best practices or if you're unsure, use the nx_docs tool to get relevant, up-to-date docs. Always use this instead of assuming things about nx configuration
  • If the user needs help with an Nx configuration or project graph error, use the nx_workspace tool to get any errors

When writing regular skills and agents in this repo (in /artifacts), always use agent-agnostic language. There are many different ways of representing MCP tool formats, different default subagents et cetera. Since we generally support all these subagents from the same source files, always use descriptions that will make sense for different coding agents. Don't do this: "Use the mcp__nx-mcp__ci_information MCP tool" Do this instead: "Use the ci-information tool from the nx MCP server" (you don't always have to mention the mcp server if it's obvious)

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. 10d ago First seen · 18 lines · 349 tokens per session scan A 047c903c6af0

Subscribe to this mod's changes

nx-ai-agents-config AGENTS.md is an instructions file published in the GitHub repository nrwl/nx-ai-agents-config (28 stars, last pushed 29d ago), licensed MIT. It adds 349 tokens to every session, about $0.0017 per session on Opus 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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