Babel: Skill for Claude Code

.claude/skills/bb-invoke-magic/SKILL.md

bb-invoke-magic is a skill for Claude Code from amoslee2026/Babel. It costs 82 tokens per session (1,127 once invoked), scanned A, original, GPL-3.0.

A chip physical-design tool wrapper that calls Magic for floorplanning, component placement, design-rule checks, and extracting circuit data from a layout. Design-rule checks look for physical layout violations.

In plain words
What is it for?
Use it for floorplanning and placement, running DRC after routing, and extracting SPICE data before layout-versus-schematic checking.
Why use it?
It collects several required physical-design steps behind one workflow, including checks and extraction needed before later verification.

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-invoke-magic/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-invoke-magic

README.md
[![agentmods](https://agentmods.dev/badge/skills/amoslee2026/babel/bb-invoke-magic.svg)](https://agentmods.dev/skills/amoslee2026/babel/bb-invoke-magic)
Your own site
<a href="https://agentmods.dev/skills/amoslee2026/babel/bb-invoke-magic"><img src="https://agentmods.dev/badge/skills/amoslee2026/babel/bb-invoke-magic.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,127 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 $0.00082 $0.01127
Opus 5 $0.00041 $0.00563
Sonnet 5 $0.00016 $0.00225
Haiku 4.5 $0.00008 $0.00113

Measured 2d ago against content hash 55b7a54354d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

bb-invoke-magic 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 3 executable files (scripts/parse_magic.py, scripts/render_magic_tcl.py, scripts/run_magic.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-invoke-magic/SKILL.md · 117 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

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 117 lines · 82 tokens per session scan A 55b7a54354d9

Subscribe to this mod's changes

bb-invoke-magic is a skill published in the GitHub repository amoslee2026/Babel (42 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 82 tokens to every session and 1,127 once invoked, about $0.0004 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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