What is MoYuCode CLAUDE.md?

Project instructions for MoYuCode, an application with a web interface for AI coding assistants and a C# web API, plus a Windows desktop app. They describe how to build and run each part.

Use them to install dependencies, start the services, build the C# projects, or build the React web interface.

They give an agent the commands and project layout needed to work across the backend, frontend, and Windows application.

MoYuCode CLAUDE.md — Instructions file for coding agents by AIDotNet: Project instructions for MoYuCode, an application with a web…

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add instructions/aidotnet/moyucode/claude-md

Clone the repo

git clone --depth 1 https://github.com/AIDotNet/MoYuCode

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/aidotnet/moyucode/claude-md.svg)](https://agentmods.dev/instructions/aidotnet/moyucode/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/aidotnet/moyucode/claude-md"><img src="https://agentmods.dev/badge/instructions/aidotnet/moyucode/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,976 This file is loaded in full into every session.

When invoked 1,976 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

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	$0.01976	$0.01976
Opus 5	$0.00988	$0.00988
Sonnet 5	$0.00395	$0.00395
Haiku 4.5	$0.00198	$0.00198

Measured 4d ago against content hash faa93dc21cdf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

MoYuCode CLAUDE.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 4d 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.

CLAUDE.md · 185 lines

How it starts

The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

MoYuCode（摸鱼Coding） is a dual-stack application providing a web UI for AI coding assistants (Codex and Claude Code). The backend is an ASP.NET Core Web API (net10.0) that integrates with the OpenAI Codex app-server via JSON-RPC over stdio. The frontend is a Vite + React + TypeScript SPA with Tailwind CSS.

Build Commands

Backend (C# API)

Build: dotnet build src/MoYuCode/MoYuCode.csproj
Run (HTTP): dotnet run --project src/MoYuCode/MoYuCode.csproj --launch-profile http
- Runs on http://localhost:9110
Run (HTTPS): dotnet run --project src/MoYuCode/MoYuCode.csproj --launch-profile https
- Runs on https://localhost:9111

Windows Desktop App (MoYuCode.Win)

Build: dotnet build src/MoYuCode.Win/MoYuCode.Win.csproj
Run: dotnet run --project src/MoYuCode.Win/MoYuCode.Win.csproj
This is a Windows Forms app that hosts the API with a system tray icon

Frontend (React)

All commands should be run from the web/ directory:

Install dependencies: npm ci
Dev server: npm run dev
Build: npm run build (runs TypeScript check + Vite build)
Lint: npm run lint

Full Application Build

To build the complete application with frontend bundled:

cd web && npm ci && npm run build && cd ..
# Copy frontend build to backend wwwroot (use xcopy on Windows, rsync on Unix)
dotnet build src/MoYuCode/MoYuCode.csproj -c Release

Architecture

Backend Structure

The API follows a hybrid architecture with both minimal APIs and traditional controllers:

Minimal APIs (Api/ directory):

ApiEndpoints.cs: Main REST API endpoints (filesystem, projects, providers, tools, jobs)
A2aEndpoints.cs: Agent-to-Agent (A2A) protocol endpoints for streaming AI interactions
- Implements .well-known/agent.json discovery
- JSON-RPC over Server-Sent Events (SSE) for real-time streaming
- Methods: tasks/sendSubscribe, tasks/resubscribe, tasks/get, tasks/cancel

Read the full file on GitHub · 185 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.

4d ago First seen · 185 lines · 1,976 tokens per session scan A faa93dc21cdf

Subscribe to this mod's changes

MoYuCode CLAUDE.md is an instructions file published in the GitHub repository AIDotNet/MoYuCode (84 stars, last pushed 7mo ago), licensed MIT. It adds 1,976 tokens to every session, about $0.0099 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.

Backend and APIs

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

MoYuCode CLAUDE.md