open-claude-code: Instructions file for Codex

AGENTS.md

open-claude-code AGENTS.md is an instructions file for Codex, OpenCode from linkedlist771/open-claude-code. It costs 1,701 tokens per session, scanned A, a copy of qqcode AGENTS.md, Apache-2.0.

Python coding instructions for projects using Python 3.12 or newer. They cover modern syntax, type hints, file handling, nesting, and general code style.

In plain words
What is it for?
Use them whenever editing Python files, especially when applying Python 3.12 features or checking code quality.
Why use it?
They give an agent consistent rules for writing and reviewing Python code in that repository.

Instructions file for CodexOpenCode

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

This is linkedlist771/open-claude-code's own configuration. It tells Codex and OpenCode how to work on open-claude-code 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 open-claude-code configures →

Reuse

Borrowing it

Nothing to install: this file belongs to linkedlist771/open-claude-code. 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/linkedlist771/open-claude-code/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/linkedlist771/open-claude-code

Made for: Codex, OpenCode.

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Per session 1,701 This file is loaded in full into every session.
When invoked 1,701 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 100% copy Near-identical to another mod 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 $0.01701 $0.01701
Opus 5.5 $0.00680 $0.00680
Sonnet 5.5 $0.00340 $0.00340
Haiku 4.5 $0.00170 $0.00170

Measured 1mo ago against content hash ae921f0ac7d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

open-claude-code 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.

Origin

This is a copy

100% identical to qqcode AGENTS.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

python312.rule

Rule for enforcing modern Python 3.12+ best practices.

Applies to all Python files (*.py) in the project.

Guidelines covered:

- Use match-case syntax instead of if/elif/else for pattern matching.

- Use the walrus operator (:=) when it simplifies assignments and tests.

- Favor a "never nester" approach by avoiding deep nesting with early returns or guard clauses.

- Employ modern type hints using built-in generics (list, dict) and the union pipe (|) operator,

rather than deprecated types from the typing module (e.g., Optional, Union, Dict, List).

- Ensure code adheres to strong static typing practices compatible with static analyzers like pyright.

- Favor pathlib.Path methods for file system operations over older os.path functions.

- Write code in a declarative and minimalist style that clearly expresses its intent.

- Additional best practices including f-string formatting, comprehensions, context managers, and overall PEP 8 compliance.

description: "Modern Python 3.12+ best practices and style guidelines for coding." files: "**/*.py"

guidelines:

  • title: "Match-Case Syntax" description: > Prefer using the match-case construct over traditional if/elif/else chains when pattern matching is applicable. This leads to clearer, more concise, and more maintainable code.

  • title: "Walrus Operator" description: > Utilize the walrus operator (:=) to streamline code where assignment and conditional testing can be combined. Use it judiciously when it improves readability and reduces redundancy.

  • title: "Never Nester" description: > Aim to keep code flat by avoiding deep nesting. Use early returns, guard clauses, and refactoring to minimize nested structures, making your code more readable and maintainable.

  • title: "Modern Type Hints" description: > Adopt modern type hinting by using built-in generics like list and dict, along with the pipe (|) operator for union types (e.g., int | None). Avoid older, deprecated constructs such as Optional, Union, Dict, and List from the typing module.

Read the full file on GitHub · 136 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 · 136 lines · 1,701 tokens per session scan A ae921f0ac7d0

Subscribe to this mod's changes

open-claude-code AGENTS.md is an instructions file published in the GitHub repository linkedlist771/open-claude-code (5 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 1,701 tokens to every session, about $0.0068 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to qqcode AGENTS.md, differing in 0 lines, and is treated as a copy.

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