What is agent-state AGENTS.md?

A set of project instructions for Python repositories, covering package management, code style, type annotations, documentation, error handling, and validation.

Use it when working on the agent-state Python project, especially when installing dependencies with uv, writing typed code, documenting functions and classes, and running ruff and pyright.

It gives a coding agent consistent rules for making and checking changes in the repository. It also explains which tools to use to find style and type problems.

How tianhuil/agent-state configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to tianhuil/agent-state. 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/tianhuil/agent-state/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/tianhuil/agent-state

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/tianhuil/agent-state/agents-md/github.svg)](https://agentmods.dev/instructions/tianhuil/agent-state/agents-md)

Your own site

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

Per session 208 This file is loaded in full into every session.

When invoked 208 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	$0.00208	$0.00208
Opus 5.5	$0.00083	$0.00083
Sonnet 5.5	$0.00042	$0.00042
Haiku 4.5	$0.00021	$0.00021

Measured 2mo ago against content hash e5e39ea26986, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-state 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 · 21 lines

What it actually says

Rules for python repos

General

Use uv for package manager.

Coding Style

Prefer to write functional code. Prefer list comprehensions for map, flatmap, and filter: [func(x) for x in xs if condition(x)].
Prefer to not mutate variables, even though Python allows mutation (pretend variables are all using typescript const not let).
Explicitly type where practicable using mypy. Look at the libraries and import and use those types; do not make up types.
Always avoid using type Any type.
Add docstring to every class and function.
Place try/except only at the root calling function. Do not place try/except in each intermediate or leaf function.

Validation

Whenever you make a change, run ruff and pyright to confirm tests pass. Use git diff and review code changes for following the rules under "Coding Style" section.

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.

2mo ago First seen · 21 lines · 208 tokens per session scan A e5e39ea26986

Subscribe to this mod's changes

agent-state AGENTS.md is an instructions file published in the GitHub repository tianhuil/agent-state (0 stars, last pushed 11mo ago), licensed MIT. It adds 208 tokens to every session, about $0.0008 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.

agent-state AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
agent-state AGENTS.mdtianhuil/agent-state	Instructions file	0	11mo ago	MIT	A	208	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

agent-state: Instructions file for Codex