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writing-humanizer: Instructions file for Codex

AGENTS.md

writing-humanizer AGENTS.md is an instructions file for Codex, OpenCode from shyuan/writing-humanizer. It costs 1,327 tokens per session, scanned A, original, MIT.

A contributor guide explains Writing Humanizer, a cross-tool plugin whose single skill detects and rewrites AI-like writing patterns, especially in Traditional Chinese used in Taiwan. It describes the shared skill files and plugin layout.

In plain words
What is it for?
It is for finding the skill and host-specific manifests, editing its instructions, and understanding how the plugin is shared across Claude Code, Codex, Cursor, and other coding tools.
Why use it?
It tells contributors how this Markdown-based plugin works even though it has no application runtime, build, or test command.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions CLAUDE.md; mentions Claude Code.

This is shyuan/writing-humanizer's own configuration. It tells Codex and OpenCode how to work on writing-humanizer 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 writing-humanizer configures →

not rated 28repo +1 4mo ago A scan 1,327 tokens original MIT
View source ↗ shyuan/writing-humanizer
Reuse

Borrowing it

Nothing to install: this file belongs to shyuan/writing-humanizer. 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/shyuan/writing-humanizer/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/shyuan/writing-humanizer

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,327 This file is loaded in full into every session.
When invoked 1,327 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 $0.01327 $0.01327
Opus 5.5 $0.00531 $0.00531
Sonnet 5.5 $0.00265 $0.00265
Haiku 4.5 $0.00133 $0.00133

Measured 1mo ago against content hash 92d2d6161b53, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

writing-humanizer 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 1mo 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 · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

What this repository is

A cross-tool plugin (not an application). It ships a single user-invocable skill, writing-humanizer, that detects and rewrites AI-generated writing patterns, focused on Traditional Chinese (Taiwan). There is no build, lint, test, or runtime — the "code" is Markdown prompt content that the host (Claude Code, OpenAI Codex, Cursor, Google Antigravity CLI, OpenCode, Kimi CLI, or pi) loads as a skill. Changes are validated by reading them and by exercising the skill, not by a toolchain.

The same skills/ directory and SKILL.md format are shared by all hosts (Claude Code, OpenAI Codex, Cursor, Google Antigravity CLI, OpenCode, Kimi CLI, pi); only the manifest/loader differs per host.

Repository layout

  • .claude-plugin/plugin.json — Claude Code plugin manifest. Distributed via the shyuan-marketplace.
  • .codex-plugin/plugin.json — OpenAI Codex plugin manifest. Points at the shared skills dir via "skills": "./skills/".
  • .cursor-plugin/plugin.json — Cursor plugin manifest (Cursor 2.5+). Points at the shared skills dir via "skills": "skills/".
  • plugin.json (repo root) — Google Antigravity CLI plugin manifest. Antigravity expects this at the plugin root (not in a namespaced dir); "skills" is an array pointing at each skill dir (["skills/writing-humanizer"]).
  • package.json + .opencode/plugins/writing-humanizer.js + .opencode/INSTALL.md — OpenCode loader. OpenCode does not read the top-level skills/ dir; instead it installs this repo as a JS plugin (via the plugin array in the user's opencode.json, resolved through package.json's "main"), and the plugin's config hook injects skills/ into config.skills.paths so the skill is auto-discovered — no symlinks. See .opencode/INSTALL.md.
  • .kimi-plugin/plugin.json — Kimi CLI plugin manifest. Points at the shared skills dir via "skills": "./skills/", plus a Kimi-specific interface block for display metadata. (We omit Kimi's optional sessionStart so the skill loads on demand, and skillInstructions since the skill references no host-specific tools.)
  • .pi/extensions/writing-humanizer.ts + the "pi" field in package.json — pi loader. Like OpenCode, pi does not read the top-level skills/ dir on its own; the TS extension's resources_discover hook returns skillPaths: [skillsDir] to register the shared skills/ dir. package.json's "pi" field lists the extension and skills paths.
  • skills/writing-humanizer/SKILL.md — the skill entry point (hub), used by all seven hosts. Its YAML frontmatter (name, description) drives triggering on all of them; Claude-specific keys (user-invocable, argument-hint, allowed-tools) are ignored by the others.
  • skills/writing-humanizer/references/ — spoke files loaded on demand by the hub.
  • README.md — bilingual (English + 中文) user-facing docs, kept in sync with the pattern catalog.

Read the full file on GitHub · 47 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. 1mo ago First seen · 47 lines · 1,327 tokens per session scan A 92d2d6161b53

Subscribe to this mod's changes

writing-humanizer AGENTS.md is an instructions file published in the GitHub repository shyuan/writing-humanizer (28 stars, last pushed 4mo ago), licensed MIT. It adds 1,327 tokens to every session, about $0.0053 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.

Claude CodeWriting and docsai-generated-contentai-writingai-writing-detectionanthropicchinese
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