fnw: Instructions file for Claude Code

CLAUDE.md

fnw CLAUDE.md is an instructions file for Claude Code from zhaixin244-wq/fnw. It costs 4,298 tokens per session, scanned A, original, MIT.

A project instruction set for an AI-assisted chip and system-on-chip design workspace, covering Verilog and SystemVerilog code, documentation, diagrams, testing tools, and required workflows.

In plain words
What is it for?
It is for guiding RTL implementation, chip architecture documents, waveform and diagram generation, automated checks, and change tracking.
Why use it?
It gives an agent the project context and working rules needed to make changes safely in a specialized hardware codebase. Without that context, the agent may use the wrong language, tool, or process.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions subagents; mentions Claude Code.

This is zhaixin244-wq/fnw's own configuration. It tells Claude Code how to work on fnw 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 fnw configures →

Reuse

Borrowing it

Nothing to install: this file belongs to zhaixin244-wq/fnw. 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/zhaixin244-wq/fnw/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/zhaixin244-wq/fnw

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

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Per session 4,298 This file is loaded in full into every session.
When invoked 4,298 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.04298 $0.04298
Opus 5 $0.02149 $0.02149
Sonnet 5 $0.00860 $0.00860
Haiku 4.5 $0.00430 $0.00430

Measured 8d ago against content hash de6358e0dcac, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

fnw 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 8d 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 · 263 lines

How it starts

The opening of the file, as written. The whole thing — 263 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FNW AI 芯片设计平台

本项目为芯片架构设计工作区,使用 AI Agent 辅助完成从需求探索到 RTL 实现的全流程。



项目概述

  • 领域:芯片/SoC 架构设计与 RTL 实现
  • 语言:Verilog-2005(可综合 RTL)+ SystemVerilog(仅 interface/typedef/SVA)
  • 工具链:oss-cad-suite(Verilator lint、Yosys 综合、gtkwave 波形查看)、d2(架构图)、wavedrom-cli(时序图)、playwright(自动化)
  • 交互语言:中文为主,技术术语保留英文(CDC、PPA、AXI、RTL 等)

目录结构

.
├── .claude/
│   ├── rules/                # 项目级规则(编码规范、模板、Agent 调用规则)
│   │   ├── coding-style.md          # RTL 编码规范(Verilog-2005)
│   │   ├── chip-agent-mandatory.md  # Agent 强制调用规则
│   │   ├── function-spec-template.md # FS 功能规格书模板
│   │   └── microarchitecture-template.md # 微架构文档模板
│   ├── shared/               # 共享配置与工具
│   │   ├── agent-common-base.md     # 公共基座(交互/降级/Wiki检索/权限)
│   │   ├── todo-mechanism.md        # 代办清单门控机制
│   │   ├── change-propagation-v2.md # 变更传播规则(全链路)
│   │   ├── chart-generation-spec.md # 图表生成规范
│   │   ├── quality-checklist-*.md   # 质量检查清单
│   │   ├── change-detect.sh         # 变更检测脚本
│   │   └── wiki-lint.sh             # Wiki 健康检查脚本
│   ├── commands/             # 用户可调用命令
│   │   ├── wiki-lint.md             # /wiki-lint 知识库健康检查
│   │   ├── wiki-ingest.md           # /wiki-ingest 源文件编译
│   │   ├── wiki-save.md             # /wiki-save 会话归档
│   │   └── rtl-lint.md              # /rtl-lint RTL 综合 lint
│   ├── hooks.json            # 会话 Hook
│   ├── wiki/                 # LLM 预编译结构化知识(已迁移到 tools/claude-obsidian/wiki/)
│   ├── knowledge/            # 原始协议/CBB 文档(已迁移到 tools/claude-obsidian/.raw/sources/)
│   └── tools/                # 工具链
│       ├── oss-cad-suite/           # Verilator/Yosys/gtkwave
│       ├── verible/                 # Verible lint/format/LSP 工具
│       ├── claude-obsidian/         # claude-obsidian 知识管理工具(git clone)
│       ├── DeepTutor/               # 知识探索工具
│       └── update-claude-obsidian.sh # 更新脚本
├── work/                     # 项目工作区
│   ├── data_adpt_work/       # 数据适配器模块工作区(当前项目)
│   │   ├── ds/
│   │   │   ├── doc/pr/       # 需求/方案/ADR 文档
│   │   │   ├── doc/fs/       # FS 功能规格书 + 图表
│   │   │   ├── doc/ua/       # 微架构文档 + 图表
│   │   │   └── rtl/          # RTL 代码
│   │   └── ...
│   └── pcie_rtag_ctrl/       # PCIe RTAG 控制器项目
├── doc/                      # 项目级文档(介绍、PPT 等)
├── memory/                   # 跨会话记忆
└── requirements.txt          # Python 依赖

Read the full file on GitHub · 263 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. 8d ago First seen · 263 lines · 4,298 tokens per session scan A de6358e0dcac

Subscribe to this mod's changes

fnw CLAUDE.md is an instructions file published in the GitHub repository zhaixin244-wq/fnw (29 stars, last pushed 3mo ago), licensed MIT. It adds 4,298 tokens to every session, about $0.0215 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 2026-09-03.

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