HatchPet-CapybaraLulu: Instructions file for Codex

AGENTS.md

HatchPet-CapybaraLulu AGENTS.md is an instructions file for Codex, OpenCode from srwang0506/HatchPet-CapybaraLulu. It costs 305 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for maintaining HatchPet-CapybaraLulu, a desktop pet with animated capybara graphics and task-related reactions.

In plain words
What is it for?
Use them when editing the pet’s sprites, animation timing, gaze and running directions, runtime states, or project metadata.
Why use it?
They protect fixed project details such as public IDs, filenames, sprite rules, animations, and supported event triggers from accidental changes.

Instructions file for CodexOpenCode

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

This is srwang0506/HatchPet-CapybaraLulu's own configuration. It tells Codex and OpenCode how to work on HatchPet-CapybaraLulu 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 HatchPet-CapybaraLulu configures →

Reuse

Borrowing it

Nothing to install: this file belongs to srwang0506/HatchPet-CapybaraLulu. 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/srwang0506/HatchPet-CapybaraLulu/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/srwang0506/HatchPet-CapybaraLulu

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 HatchPet-CapybaraLulu AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/srwang0506/hatchpet-capybaralulu/agents-md/github.svg)](https://agentmods.dev/instructions/srwang0506/hatchpet-capybaralulu/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/srwang0506/hatchpet-capybaralulu/agents-md"><img src="https://agentmods.dev/badge/instructions/srwang0506/hatchpet-capybaralulu/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 HatchPet-CapybaraLulu AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/srwang0506/hatchpet-capybaralulu/agents-md"><img src="https://agentmods.dev/badge/instructions/srwang0506/hatchpet-capybaralulu/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 305 This file is loaded in full into every session.
When invoked 305 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 $0.00305 $0.00305
Opus 5 $0.00152 $0.00152
Sonnet 5 $0.00061 $0.00061
Haiku 4.5 $0.00030 $0.00030

Measured 10d ago against content hash aab9b8495521, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

HatchPet-CapybaraLulu 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 · 12 lines

What it actually says

Capybara Lulu contributor instructions

  • Keep the public pet id and filenames stable: capybara-lulu, pet.json, and spritesheet.webp.
  • spriteVersionNumber: 2 is the Codex sprite protocol and must not be removed or treated as a project release number.
  • Preserve Lulu's identity: no eyebrows, no tail, exactly two arms and two legs, orange muzzle, orange fruit and green leaf on the head.
  • The idle runtime uses one waving paw; the opposite paw must remain lowered at the side throughout the gesture.
  • The working/laptop motion uses Lulu's anatomical left arm on the viewer-right; keep it continuously attached from shoulder to paw in every phase.
  • Directional running uses 20 distinct image-time poses arranged as two complete 10-phase two-step cycles inside the shared 1.60-second clock. Approve the rightward anatomy first, then derive the leftward loop by framewise mirroring with phase order preserved; never introduce a tail-like rear bump, merged feet, color-coded legs, or extra limbs.
  • Preserve the 20-phase synchronized state runtime and its 15 named visual clips. Codex still has exactly 9 native triggers; never describe the clips as new desktop event types.
  • Rebuild galleries with python3 scripts/build_gallery.py and run the test commands in the README before proposing asset changes.
  • Never commit generated caches, version-suffixed experiments, absolute local paths, or intermediate chroma-key strips.
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 · 12 lines · 305 tokens per session scan A aab9b8495521

Subscribe to this mod's changes

HatchPet-CapybaraLulu AGENTS.md is an instructions file published in the GitHub repository srwang0506/HatchPet-CapybaraLulu (21 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 305 tokens to every session, about $0.0015 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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