Babel: Skill for Claude Code

.claude/skills/bb-parse-ast/SKILL.md

bb-parse-ast is a skill for Claude Code from amoslee2026/Babel. It costs 104 tokens per session (1,199 once invoked), scanned A, original, GPL-3.0.

An abstract syntax tree parser for SystemVerilog RTL. An abstract syntax tree is a structured representation of source code; the resulting JSON can support clock-domain checks, signal-path tracing, and module-dependency analysis.

In plain words
What is it for?
Use it before checking clock-domain crossings, tracing a signal, or finding which RTL modules depend on one another.
Why use it?
It turns hardware source code into a consistent structure for later analysis instead of requiring each tool to parse it separately.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is amoslee2026/Babel's own configuration. It tells Claude Code how to work on Babel 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 Babel configures →

Reuse

Borrowing it

Nothing to install: this file belongs to amoslee2026/Babel. 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/amoslee2026/Babel/master/.claude/skills/bb-parse-ast/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/amoslee2026/Babel

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.

agentmods badge for bb-parse-ast

README.md
[![agentmods](https://agentmods.dev/badge/skills/amoslee2026/babel/bb-parse-ast.svg)](https://agentmods.dev/skills/amoslee2026/babel/bb-parse-ast)
Your own site
<a href="https://agentmods.dev/skills/amoslee2026/babel/bb-parse-ast"><img src="https://agentmods.dev/badge/skills/amoslee2026/babel/bb-parse-ast.svg" alt="Measured on agentmods" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,199 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00104 $0.01199
Opus 5 $0.00052 $0.00600
Sonnet 5 $0.00021 $0.00240
Haiku 4.5 $0.00010 $0.00120

Measured 2d ago against content hash 6afdc182a08f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

bb-parse-ast 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 2d ago.

The scan reads SKILL.md. This mod also ships 8 executable files (scripts/normalize_slang.py, scripts/normalize_verible.py, scripts/parse_ast_output.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/skills/bb-parse-ast/SKILL.md · 102 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago First seen · 102 lines · 104 tokens per session scan A 6afdc182a08f

Subscribe to this mod's changes

bb-parse-ast is a skill published in the GitHub repository amoslee2026/Babel (42 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 104 tokens to every session and 1,199 once invoked, about $0.0005 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 2026-09-04.

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