vibemaster: Instructions file for Codex

AGENTS.md

vibemaster AGENTS.md is an instructions file for Codex, OpenCode from liustack/vibemaster. It costs 948 tokens per session, scanned A, original, MIT.

Project instructions for Vibemaster, a repository containing reusable coding-agent skills, scripts, documentation, and rules, as well as a GitHub profile page.

In plain words
What is it for?
Working on Vibemaster's skills, shared scripts, documentation, rules, marketplace distributions, or GitHub profile content.
Why use it?
They explain the repository's several purposes and where its important files live, helping changes go to the right place.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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 vibemaster AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/liustack/vibemaster/agents-md/github.svg)](https://agentmods.dev/instructions/liustack/vibemaster/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/liustack/vibemaster/agents-md"><img src="https://agentmods.dev/badge/instructions/liustack/vibemaster/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for vibemaster AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/liustack/vibemaster/agents-md"><img src="https://agentmods.dev/badge/instructions/liustack/vibemaster/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 948 This file is loaded in full into every session.
When invoked 948 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 $0.00948 $0.00948
Opus 5.5 $0.00379 $0.00379
Sonnet 5.5 $0.00190 $0.00190
Haiku 4.5 $0.00095 $0.00095

Measured 1mo ago against content hash 303ea8c71391, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vibemaster 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 · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Project Overview

This repository (liustack/vibemaster) has three overlapping identities:

  1. GitHub profile repository — README.md (and README.zh-CN.md) render on the GitHub profile page at github.com/liustack. Keep it concise and professional.
  2. The vibemaster skill stack — skills/ is the product core: a four-skill work loop (shaping unformed intent into specs and designs, coding discipline from plan through review, root-cause digging, task-state snapshots) distributed through multiple plugin marketplaces (Claude Code plugin marketplace, Codex ~/.agents/skills, skills.sh, etc.).
  3. Shared resources hub — scripts/, docs/, and rules/ collect reusable scripts, docs, and agent rules shared across all repositories.

Directory Structure

README.md          # GitHub profile page content
scripts/           # Shared utility scripts used across repos
skills/            # The vibemaster skill stack (product core)
docs/philosophy.md # Design principles — read before designing or revising any skill
docs/              # Shared documentation and references
rules/             # Reusable agent rules — drop-ins for .claude/rules/, paste-able into AGENTS.md (see rules/README.md)

Docs Discovery

Before starting work, run:

bash scripts/list-docs.sh

It lists every doc under docs/ and rules/ with its summary and "Read when" hints. Check the hints and read the relevant docs before coding.

Conventions

  • README.md is public-facing. Write in English, keep it clean and professional.
  • scripts/ contains cross-repo utility scripts (e.g., automation, data fetching).
  • skills/ follows the standard skill format: each skill is a directory with a SKILL.md and optional references/ folder.
  • Skill description fields must be lean and keyword-first: harnesses inject every installed skill's description into context (Claude Code caps the whole listing at ~1% of the context window and truncates long entries), so the opening clause must carry the trigger keywords.
  • Triggering discipline for descriptions: state what the skill is + when to use + how it differs from neighboring skills, add an explicit exclusion clause ("Do not trigger for…") when the positive triggers are broad, never use moral imperatives (MUST/ALWAYS — they cause both over- and under-triggering), and one trigger per branch (do not restate the same scenario in synonyms — it wastes the listing budget).
  • Invocation control for all skills: none. The description wording is the first guard. shaping has a broad surface: product and feature definition may trigger from ordinary wording, while life and career decisions are out of scope entirely (its description excludes them, and personal judgment lives in opcstack's opc-founder). Because a mistaken load can turn into unwanted questioning, its body starts with a silent gate. A clear mismatch completes the original request without announcing the gate, asking a diagnostic question, or creating a file.
  • Testing layout: deterministic code tests (for scripts/) go in tests/ once such code exists. Model-behavior evals live in repo-level evals/<skill-name>/ (author-side, official skill-creator schema) — never inside skills/, so installs stay clean. Run scripts/check-skills.sh and scripts/check-contract.sh before committing skill or manifest changes.
  • Language regime: skill bodies, references, and docs are written in English (the authoritative version) with a .zh-CN.md translation alongside. Skill descriptions are English-framed: the capability sentence and the exclusion clause are written once, in English, and Chinese appears only as trigger words a user would actually type. They are the trigger surface, not a translated document, so restating the same sentence in both languages buys no extra coverage and spends a listing budget capped at ~1% of the context window. Cross-references and the docs index point at English files only, and authoritative files carry no language links (translations link back to them).
  • Working drafts (designs, plans, ideation output, diagnosis logs, research notes) go in .issues/<YYYY-MM-DD-topic>/ (gitignored via .git/info/exclude), organized by task, not by type.
  • When adding new shared resources, place them in the appropriate directory and keep naming consistent.

Read the full file on GitHub · 44 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 · 44 lines · 948 tokens per session scan A 303ea8c71391

Subscribe to this mod's changes

vibemaster AGENTS.md is an instructions file published in the GitHub repository liustack/vibemaster (13 stars, last pushed 2mo ago), licensed MIT. It adds 948 tokens to every session, about $0.0038 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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