What is codex-pets AGENTS.md?

A project instruction file for the codex-pets application. It documents the repository layout, approved commands, and the checks developers should run while making changes.

Use it when modifying codex-pets to locate source areas, install dependencies, run development commands, and verify changes.

It helps developers find the right files and follow the project's expected workflow. It also makes completion claims verifiable through type checks, linting, tests, builds, or browser checks.

How astandrik/codex-pets configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to astandrik/codex-pets. 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/astandrik/codex-pets/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/astandrik/codex-pets

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/astandrik/codex-pets/agents-md/github.svg)](https://agentmods.dev/instructions/astandrik/codex-pets/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/astandrik/codex-pets/agents-md"><img src="https://agentmods.dev/badge/instructions/astandrik/codex-pets/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/astandrik/codex-pets/agents-md"><img src="https://agentmods.dev/badge/instructions/astandrik/codex-pets/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,048 This file is loaded in full into every session.

When invoked 2,048 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.

Model	Per session	Once invoked
Fable 5.1	$0.02048	$0.02048
Opus 5.5	$0.00819	$0.00819
Sonnet 5.5	$0.00410	$0.00410
Haiku 4.5	$0.00205	$0.00205

Measured 22d ago against content hash 11a4dbc8d425, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codex-pets 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 22d 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 · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Precedence: the closest AGENTS.md to the files you edit wins. Root defines repo-wide defaults.

Commands (verified)

Source: package.json, tsconfig.json, local verification on 2026-05-09

Task	Command	~Time
Install deps	`npm install`	~1m
Typecheck	`npx tsc --noEmit --incremental false`	~1s
Lint	`npm run lint`	~1s
Test (all)	`npm test`	~1s
Build	`npm run build`	~10s
Dev server	`npm run dev -- --port 3000`	~1s startup

Workflow

Read nearest AGENTS.md before editing.
For src/**, check ./src/AGENTS.md.
Run the smallest relevant check after each change.
Before claiming completion, provide evidence from lint, test, build, or browser verification.

File Map

src/app/          -> Next App Router pages, layouts, API routes
src/components/   -> UI components with adjacent SCSS
src/components/WebMCP/ -> client-only read-only WebMCP tool registration
src/lib/auth/     -> internal auth helpers and admin checks
src/lib/metrics/  -> Yandex Metrika counter and goal helpers
src/lib/pets/     -> pet types, validation, package parsing, repository logic
src/lib/pets/search/ -> text/vision search providers, ranking, persistence, and evaluations
src/lib/pets/related/ -> related-pet annotations, ranking, snapshots, and rebuilds
src/lib/ydb/      -> YDB driver wrapper, query result parsing, table names
src/styles/       -> global SCSS variables, mixins, utilities, overrides
public/           -> static assets such as favicon
ydb/schema.yql    -> manual YDB schema; apply outside the app
README.md         -> local setup and stack overview
DEPLOYMENT.md     -> production deployment runbook

Golden Samples (follow these patterns)

For	Reference	Key patterns
API route flow	src/app/api/submissions/register/route.ts	auth -> config guard -> request parse -> validation -> repository
YDB repository	src/lib/pets/repository.ts	keep YQL close to feature logic; return normalized app types
Client upload flow	src/components/SubmitForm/SubmitForm.tsx	ZIP/file normalization, client-side atlas checks, explicit server calls
Validation helpers	src/lib/pets/validation.ts	typed result unions, boundary checks, no ad hoc parsing in routes
WebMCP tool layer	src/components/WebMCP/WebMCPRegistrar.tsx	feature-detect `navigator.modelContext`; read-only tools; sanitize public pet data

Read the full file on GitHub · 131 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.

22d ago Changed · +4 lines · +134 tokens per session 11a4dbc8d425
2mo ago First seen · 127 lines · 1,914 tokens per session scan A 7cb01fa95dc3

Subscribe to this mod's changes

codex-pets AGENTS.md is an instructions file published in the GitHub repository astandrik/codex-pets (3 stars, last pushed yesterday), licensed Apache-2.0. It adds 2,048 tokens to every session, about $0.0082 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.

codex codex-cli coding-agents developer-tools mcp model-context-protocol

codex-pets AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codex-pets AGENTS.mdastandrik/codex-pets	Instructions file	3	yesterday	Apache-2.0	A	2,048	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

codex-pets: Instructions file for Codex