heya-skill: Instructions file for Codex

AGENTS.md

heya-skill AGENTS.md is an instructions file for Codex, OpenCode from ChouChiu/heya-skill. It costs 1,318 tokens per session, scanned A, original, MIT.

Repository instructions for a Bun-based tool that creates title styles for Bilibili videos, a Chinese video platform, using a fetch, analysis, and generation pipeline. They define its commands, runtime, and development checks.

In plain words
What is it for?
Use them to install dependencies, run checks and tests, execute the full or partial pipeline, and generate documentation or skill files.
Why use it?
They help contributors run the project consistently and preserve the required order of checking, testing, fetching, analyzing, and generating output.

Instructions file for CodexOpenCode

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

This is ChouChiu/heya-skill's own configuration. It tells Codex and OpenCode how to work on heya-skill 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 heya-skill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ChouChiu/heya-skill. 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/ChouChiu/heya-skill/v2/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ChouChiu/heya-skill

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.

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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 1,318 This file is loaded in full into every session.
When invoked 1,318 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 $0.01318 $0.01318
Opus 5.5 $0.00527 $0.00527
Sonnet 5.5 $0.00264 $0.00264
Haiku 4.5 $0.00132 $0.00132

Measured 2mo ago against content hash a893dbe5410c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

heya-skill 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 2mo 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 · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Bilibili creator "黑鸦" title style generator — CLI pipeline + AI skill output.

Runtime

  • Bun only. Every command uses bun. No npm/pnpm/yarn.
  • bun run <script> for package.json scripts, bun test for tests.
  • #!/usr/bin/env bun shebang on src/index.ts.

Commands

bun install                    # install deps (bun.lock)
bun run check                  # biome check . && tsc --noEmit
bun run format                 # biome check --write .
bun test                       # run all tests
bun test -t <pattern>          # filter by test name regex
bun run pipeline               # full pipeline: fetch → analyze → generate
bun run pipeline --skip-fetch --skip-analyze --dry-run
bun run docs                   # typedoc → docs/ (gitignored)

Order matters: bun run check before bun test. CI enforces this.

Pipeline

3 phases: fetch (UApi Bilibili proxy) → analyze (HanLP REST + deterministic aggregation) → generate (template substitution).

Fetch uses uapi-sdk-typescript — no Bilibili cookie or WBI signing needed. HanLP REST required for analysis; skip with --skip-analyze.

SKILL.md generation

  • Template: SKILL.template.md — the canonical source. Edit this file.
  • Output: skills/heya-title-style/SKILL.md — auto-generated from template + analysis, committed. This is the deployed agent skill artifact.
  • AUTO sections: Content between <!-- AUTO_START:xxx --> / <!-- AUTO_END:xxx --> is replaced by pipeline for these 4 sections: core-features, title-examples, vocab-library, structure-formulas. The core-guidance section has template fallback text but is NOT replaced by pipeline. Never edit AUTO sections in the output file.
  • Reference data: skills/heya-title-style/references/ is auto-generated.
    • 00-llm-brief.md — compact LLM-readable summary
    • 01-titles.csv — raw video titles
    • 02-style-analysis.yaml — structured analysis data
    • 02-style-analysis.md — human-readable analysis report
    • 03-title-features.json — per-title debug data; never load wholesale into LLM context

Read the full file on GitHub · 110 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. 2mo ago First seen · 110 lines · 1,318 tokens per session scan A a893dbe5410c

Subscribe to this mod's changes

heya-skill AGENTS.md is an instructions file published in the GitHub repository ChouChiu/heya-skill (19 stars, last pushed yesterday), licensed MIT. It adds 1,318 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.

Related

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