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.
curl -O https://raw.githubusercontent.com/amoslee2026/Babel/master/.claude/skills/bb-rtl-coder/SKILL.mdgit clone --depth 1 https://github.com/amoslee2026/BabelWrote 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.
[](https://agentmods.dev/skills/amoslee2026/babel/bb-rtl-coder)<a href="https://agentmods.dev/skills/amoslee2026/babel/bb-rtl-coder"><img src="https://agentmods.dev/badge/skills/amoslee2026/babel/bb-rtl-coder.svg" alt="Measured on agentmods" height="20"></a>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 5.1 | $0.00070 | $0.07705 |
| Opus 5 | $0.00035 | $0.03853 |
| Sonnet 5 | $0.00014 | $0.01541 |
| Haiku 4.5 | $0.00007 | $0.00771 |
Grade B, and why
bb-rtl-coder scanned grade B with 1 finding 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 yesterday.
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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
cat ~/.claude/ctx_budget.env 2>/dev/null || echo "SAFE_TOKENS=100000" 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.
What ships with it
10 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.
- Gotcha/rtl_pitfalls.md 2.1 KB
- references/sv_coding_style.md 4.5 KB
- references/synthesizable_rules.md 2.1 KB
- scripts/compute_spec_hash.py 1.8 KB runs code
- scripts/generate_regmap_assertions.py 1.7 KB runs code
- scripts/generate_regmap_doc.py 1.3 KB runs code
- scripts/synthesis_check.py 3.9 KB runs code
- templates/rtl_module.sv 2.9 KB
- templates/rtl_parent.sv 1.7 KB
- templates/testbench.sv 2.8 KB
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.
- yesterday First seen · 935 lines · 70 tokens per session scan B 7bc10e891e2c
bb-rtl-coder is a skill published in the GitHub repository amoslee2026/Babel (42 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 70 tokens to every session and 7,705 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.
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