vowline: Instructions file for Codex

AGENTS.md

vowline AGENTS.md is an instructions file for Codex, OpenCode from chojondocho/vowline. It costs 447 tokens per session, scanned A, original, MIT.

Installation instructions for Vowline, including its required skill location, activation block, compatibility mirror, and verification steps. They tell an AI agent which installation guide is authoritative.

In plain words
What is it for?
Use them when installing or checking Vowline for Codex, especially when updating global agent instructions or migrating an older installation.
Why use it?
They prevent an incomplete installation caused by copying only a generic skill directory. They also clarify which files are required and which are compatibility copies.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: reads ~/.codex or $CODEX_HOME, but also the file is AGENTS.md. Also seen: mentions AGENTS.md; mentions Codex.

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

Reuse

Borrowing it

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

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 vowline AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/chojondocho/vowline/agents-md.svg)](https://agentmods.dev/instructions/chojondocho/vowline/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/chojondocho/vowline/agents-md"><img src="https://agentmods.dev/badge/instructions/chojondocho/vowline/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 447 This file is loaded in full into every session.
When invoked 447 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.00447 $0.00447
Opus 5 $0.00224 $0.00224
Sonnet 5 $0.00089 $0.00089
Haiku 4.5 $0.00045 $0.00045

Measured 6d ago against content hash 4f25d994ff41, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

vowline 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 6d 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 · 25 lines

What it actually says

Agent Instructions for Vowline

If you are an AI agent installing Vowline for a user, follow INSTALL.md. Do not use a generic skill installer as the whole install unless it also installs the documented skill path and the relevant bridge files.

The install guide is the source of truth because it covers the canonical skill, rendered activation bridge files, optional compatibility mirrors, and verification.

You may install by directly copying skill directories and inserting marked bridge blocks as described in INSTALL.md. The scripts are optional helpers, not the only valid path.

For Codex global installs, the documented required state is:

~/.agents/skills/vowline/SKILL.md
${CODEX_HOME:-~/.codex}/AGENTS.md with one <!-- vowline:start --> block

The installer also writes ${CODEX_HOME:-~/.codex}/skills/vowline/SKILL.md as a compatibility mirror for current Codex installer/Desktop environments that use CODEX_HOME/skills. Do not describe that mirror as an official Codex requirement.

Report the documented path, any compatibility mirror written, and the verification result. If Vowline was previously installed only into ${CODEX_HOME:-~/.codex}/skills/vowline, follow INSTALL.md again to repair the missing documented skill path and bridge file.

For update requests, follow UPDATE.md. Updating is a repeat install from the latest repository source, not a partial edit of one SKILL.md; refresh the selected Vowline-owned skill directories, replace the selected marked bridge blocks from guidance/VOWLINE_ACTIVATION.md, then verify. Preserve unrelated user and project instructions.

For uninstall requests, follow UNINSTALL.md. Do not only delete one skill directory; remove all selected Vowline-owned skill folders and marked bridge blocks, then verify removal.

Expected Codex global removal means ~/.agents/skills/vowline is gone, any ${CODEX_HOME:-~/.codex}/skills/vowline compatibility mirror is gone, and ${CODEX_HOME:-~/.codex}/AGENTS.md no longer contains a <!-- vowline:start --> block.

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. 6d ago First seen · 25 lines · 447 tokens per session scan A 4f25d994ff41

Subscribe to this mod's changes

vowline AGENTS.md is an instructions file published in the GitHub repository chojondocho/vowline (50 stars, last pushed 3mo ago), licensed MIT. It adds 447 tokens to every session, about $0.0022 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.

Related

Other instructions, from other repositories