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RTLDesignSherpa: Instructions file for Claude Code

CLAUDE.md

RTLDesignSherpa CLAUDE.md is an instructions file for Claude Code from sean-galloway/RTLDesignSherpa. It costs 3,737 tokens per session, scanned A, original, MIT.

Repository-specific instructions for RTLDesignSherpa, a project focused on digital hardware design and testing. They describe the handbook as the main source for design, verification, FPGA, and documentation rules.

In plain words
What is it for?
For working on RTLDesignSherpa while following its handbook, global requirements, and repository conventions.
Why use it?
They give the coding agent the project’s rules and working knowledge before it changes files. This helps avoid copying outdated process notes into code or separate documents.

Instructions file for Claude Code

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

This is sean-galloway/RTLDesignSherpa's own configuration. It tells Claude Code how to work on RTLDesignSherpa 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 RTLDesignSherpa configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is cd ../dv/tests.

not rated 23repo changed 5d ago A scan 3,737 tokens original MIT
View source ↗ sean-galloway/RTLDesignSherpa rtldesignsherpa.com
Reuse

Borrowing it

Nothing to install: this file belongs to sean-galloway/RTLDesignSherpa. 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/sean-galloway/RTLDesignSherpa/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/sean-galloway/RTLDesignSherpa

Made for: Claude Code.

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.

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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.

agentmods 80×15 button for RTLDesignSherpa CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/sean-galloway/rtldesignsherpa/claude-md"><img src="https://agentmods.dev/badge/instructions/sean-galloway/rtldesignsherpa/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,737 This file is loaded in full into every session.
When invoked 3,737 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 $0.03737 $0.03737
Opus 5 $0.01869 $0.01869
Sonnet 5 $0.00747 $0.00747
Haiku 4.5 $0.00374 $0.00374

Measured 5d ago against content hash e1cc5b803ea8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

RTLDesignSherpa 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 5d 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 · 409 lines

How it starts

The opening of the file, as written. The whole thing — 409 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Code Guide for RTL Design Sherpa

Version: 1.1 Last Updated: 2026-07-22 Purpose: Help Claude Code work efficiently with this repository

The Handbook (repo memory) - READ THIS FIRST

vault/handbook/INDEX.md is the SINGLE SOURCE OF TRUTH for every skill and method in this repository. It is the repo's working memory: design rules (design/), DV practice (dv/), FPGA process (fpga/), and documentation practice (authoring/) as atomic, wikilinked notes - each rule recorded WITH the failure that taught it.

  • Skills (.claude/skills/, auto-discovered) are signposts only. A skill names its canonical handbook note and stops. Method detail does not live in a skill file.
  • Methodology does not live next to the code. No README.md beside a tool restating how to use it, no how-to in a docstring beyond what a reader of that one file needs, and no canonical process document outside the repo. A second copy is how documentation rots - the copy nobody edits is the one the next session reads. Point at the handbook note instead.
  • /GLOBAL_REQUIREMENTS.md remains the enforcement authority and wins on conflict.
  • When you learn a durable lesson, add it to the relevant handbook note - that is where future sessions will look. If no note fits, create one and index it; do not park the lesson in a CLAUDE.md or a skill.

📖 Global Requirements Reference

IMPORTANT: All mandatory requirements are consolidated in /GLOBAL_REQUIREMENTS.md

Before working in this repository, review the global requirements document:

  • Location: /GLOBAL_REQUIREMENTS.md
  • Contents: All MANDATORY requirements extracted from all CLAUDE.md files
  • Organization: Categorized by RTL standards, testbench architecture, test standards, framework usage, and documentation

This CLAUDE.md provides repository-wide guidance and examples. For subsystem-specific details, see:

  • projects/components/CLAUDE.md - Project area standards
  • projects/components/{name}/CLAUDE.md - Component-specific guidance
  • rtl/{subsystem}/CLAUDE.md - Subsystem-specific guidance
  • DV framework patterns: shared TB classes live in bin/TBClasses/; the full CocoTB framework (BFMs, monitors) is the separate RTLDesignSherpa-DV repo (editable-installed into the venv)

Read the full file on GitHub · 409 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. 5d ago Changed · -624 lines · -5,288 tokens per session e1cc5b803ea8
  2. 9d ago First seen · 1,033 lines · 9,025 tokens per session scan A 66e1854c4d5e

Subscribe to this mod's changes

RTLDesignSherpa CLAUDE.md is an instructions file published in the GitHub repository sean-galloway/RTLDesignSherpa (23 stars, last pushed today), licensed MIT. It adds 3,737 tokens to every session, about $0.0187 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.

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