What is carboncode AGENTS.md?

A project guide for AI coding agents working on Carbon Code, a Chinese-first developer command-line tool built with DeepSeek-Reasonix. It describes the project’s current state, design reference, and intended workflow.

Use it when contributing to Carbon Code, especially when planning its CLI, implementing repository-aware editing, adding permission checks, or running validation.

It gives agents the context needed to work safely in an early-stage codebase and follow the planned flow for reading repositories, editing files, requesting permission, and validating changes.

How Yapie0/carboncode configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to Yapie0/carboncode. 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/Yapie0/carboncode/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/Yapie0/carboncode

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/yapie0/carboncode/agents-md/github.svg)](https://agentmods.dev/instructions/yapie0/carboncode/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/yapie0/carboncode/agents-md"><img src="https://agentmods.dev/badge/instructions/yapie0/carboncode/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/yapie0/carboncode/agents-md"><img src="https://agentmods.dev/badge/instructions/yapie0/carboncode/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,060 This file is loaded in full into every session.

When invoked 1,060 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	$0.01060	$0.01060
Opus 5.5	$0.00424	$0.00424
Sonnet 5.5	$0.00212	$0.00212
Haiku 4.5	$0.00106	$0.00106

Measured 2mo ago against content hash e475481df7d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

carboncode 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 · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Project Context

Carbon Code is a new terminal coding agent project in Yapie0/carboncode. The goal is to build a Chinese-first, DeepSeek-powered personal developer CLI similar to Codex.

The repository is intentionally early. The main design reference is:

docs/superpowers/specs/2026-05-18-carboncode-cli-design.md

Current Status

Local git repo is initialized on main.
Remote is [email protected]:Yapie0/carboncode.git.
Git identity for this repo:
- user.name=Yapie0
- [email protected]
Initial design doc commit exists locally:
- 403a731 Add Carbon Code CLI design
origin/main may not exist until the first push.
Current implementation direction:
- 导入 Reasonix 主体，然后做 Carbon Code 产品化。

Product Direction

Build a personal developer CLI for v1.

The intended user flow:

npm install -g @carboncode/cli
cd path/to/project
carboncode

The CLI should read the repository, plan work, edit files, request permission before shell commands, run validation when approved, and show diffs and a concise outcome summary.

Chosen Base

Use DeepSeek-Reasonix as the preferred implementation base because it is TypeScript/Node, DeepSeek-native, npm-friendly, and already contains useful agent primitives.

DeepSeek-TUI and Deep Code are references for UX and feature ideas, but they are not the preferred v1 base.

Do not start the agent engine from scratch unless the user explicitly changes this decision.

Naming Decisions

Product name: Carbon Code
npm package: @carboncode/cli
Main command: carboncode
Short command: ccode
Optional alias: carbon

Do not install cc by default. It commonly points to the system C compiler and may break native builds if shadowed.

MVP Scope

Include:

DeepSeek API configuration.
DeepSeek V4 Pro / Flash model profiles, after verifying the current official model IDs.
Interactive terminal session.
Repository search and file reading.
Safe file editing with visible diffs.
Shell command approval.
Test/build command execution when approved.
Session resume.
Project rules through AGENTS.md or CARBON.md.
Chinese default prompts, errors, and command explanations.
Basic token/cost visibility.
MIT license compliance for upstream code.

Read the full file on GitHub · 117 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.

2mo ago First seen · 117 lines · 1,060 tokens per session scan A e475481df7d2

Subscribe to this mod's changes

carboncode AGENTS.md is an instructions file published in the GitHub repository Yapie0/carboncode (199 stars, last pushed 2mo ago), licensed MIT. It adds 1,060 tokens to every session, about $0.0042 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.

ai-agent cli coding-agent deepseek deepseek-v4 developer-tools

carboncode AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
carboncode AGENTS.mdYapie0/carboncode	Instructions file	199	2mo ago	MIT	A	1,060	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
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	2d ago	MIT	A	4,313	Codex, OpenCode

carboncode: Instructions file for Codex