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.
curl -O https://raw.githubusercontent.com/sean-galloway/RTLDesignSherpa/main/.claude/skills/rds-dv-bfms/SKILL.mdgit clone --depth 1 https://github.com/sean-galloway/RTLDesignSherpaWrote 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/sean-galloway/rtldesignsherpa/rds-dv-bfms)<a href="https://agentmods.dev/skills/sean-galloway/rtldesignsherpa/rds-dv-bfms"><img src="https://agentmods.dev/badge/skills/sean-galloway/rtldesignsherpa/rds-dv-bfms/github.svg" alt="Measured on agentmods" height="20"></a>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.
<a href="https://agentmods.dev/skills/sean-galloway/rtldesignsherpa/rds-dv-bfms"><img src="https://agentmods.dev/badge/skills/sean-galloway/rtldesignsherpa/rds-dv-bfms.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00100 | $0.00656 |
| Opus 5 | $0.00050 | $0.00328 |
| Sonnet 5 | $0.00020 | $0.00131 |
| Haiku 4.5 | $0.00010 | $0.00066 |
Grade A, and why
rds-dv-bfms 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 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.
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.
What it actually says
rds-dv-bfms
READ FIRST: vault/handbook/dv/bfm-usage.md (the handbook is the repo's memory; this skill is the signpost). Never hand-roll a driver/monitor/decoder; the note has the factory map and the trap list (falsy-BFM, signal_map keys, ready-delay windows).
Factories per family: gaxi_factories, axi4_factories, axil4_factories, apb_factories, axis_factories, fifo_factories. DFI/UART/SMBus have no factory module - construct components directly. Arbiters: ArbiterMaster + RoundRobinArbiterMonitor (components.shared); saturate with force_client_request(), never by poking dut.request - the master owns it.
ONE OF THREE ORTHOGONAL AXES (see rds-dv-axes): BFM = who drives; SEQUENCE = what traffic (rds-dv-axes); RANDOMIZATION = what timing (rds-dv-randomization). Using the right BFM says NOTHING about whether the test stresses anything.
Per-family API docs ship in RDS-DV under /docs/components// (published at sean-galloway.github.io/RTLDesignSherpa-DV). Read them rather than reverse-engineering from source -- but check what is actually there first, because coverage is uneven (measured 2026-09-10):
components_<family>_interfaces.mdexists for axi4, axi5 and axil4 ONLY. This skill used to name that path for every family; for the other eight it points at nothing, which sends you to the source it is telling you to avoid.- A
*_factories.mdpage exists for gaxi ONLY, though 11 families ship a factories module. The factories arrived after the docs were written. - Coverage of the rest varies and axil5 has NO pages at all. gaxi and fifo
are the fullest; apb5, axis5 and wb4 have overview/components/packet;
ls <RDS-DV>/docs/components/<family>/before you rely on any of it.
Gap tracked as RDS-DV issue #78; until it closes, the components page plus the factory docstrings are the honest source for the undocumented families.
The handbook root is vault/handbook/INDEX.md - design/, dv/, fpga/, authoring/ areas, atomic notes, wikilinked. When you learn a durable lesson in this domain, ADD IT TO THE HANDBOOK NOTE, not to this skill.
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 Changed · +12 lines 3df0ef5965e4
- 12d ago First seen · 29 lines · 100 tokens per session scan A 1c6f7a239c6d
rds-dv-bfms is a skill published in the GitHub repository sean-galloway/RTLDesignSherpa (23 stars, last pushed today), licensed MIT. It adds 100 tokens to every session and 656 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 2026-08-30.
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