testbench-gen SKILL.md skillA

testbench-gen from vibeic/vibe-ic is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add vibeic/vibe-ic/testbench-gen@git:20261102.b666e3d

Pins git:20261102.b666e3d in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
vibeic/vibe-ic
Path
vibe-ic-marketplace/plugins/vibe-ic/skills/testbench-gen/SKILL.md
Versions recorded
12
Latest version
git:20261102.b666e3d, committed Nov 2, 2026
First version recorded
Jul 11, 2026
Size
23,994 bytes
Repository stars
32
License
Apache-2.0

Generate a PROFESSIONAL, high-coverage testbench for a design directly from its Phase-1 L-docs — the Phase-2 'Simulation' step (canonical flow Step 4). Use whenever a design needs functional verification: derive the interface (L1/L9), clock/reset (L8/L9), a reference model, a scoreboard, functional coverage, and assertions, then run cocotb. Program-first: the deterministic generator `professional_tb_gen.py` (MCP `eda_professional_tb`) does the derivation; this skill is the judgment layer for…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# testbench-gen — deterministic professional testbench generation

The canonical flow's **Step 4 (Simulation)** derives a professional, high-coverage
testbench from the Phase-1 layers — never a hand-waved skeleton. The load-bearing
work is a PROGRAM: `programs/professional_tb_gen.py` (exposed as MCP tool
`eda_professional_tb`). This skill is the judgment layer around it.

## What the program does (program-first)

`professional_tb_gen.py <project>` reads the project's `phase1/generated_docs/L*.json`
and emits, under `phase2/stage1/sim_professional/<top>/`:

- `tb_<top>.py` — a **cocotb** testbench: clock/reset from L8/L9, a reference
  model, a SCOREBOARD, functional coverage (cocotb-coverage covergroups), and a
  directed-corner + constrained-random stimulus loop.
- `<top>_coverage_model.json` (an **L28** coverage model), `<top>_assertions.sva`
  (an **L29** assertion set), a cocotb `Makefile`, and `verification_plan.json`.

It **combines open-source** frameworks rather than re-inventing them: **cocotb**
(TB base) + **cocotb-coverage** (functional coverage + constrained-random) +
**Verilator/Icarus** (sim) + an **SVA bind** for Verilator/SymbiYosys. Add
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add vibeic/vibe-ic/testbench-gen@sha256:defd50ab13fa6274

The line at the top of this page pins the label git:20261102.b666e3d, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_6wtlqfftjrlgrpd2.svg)](https://markdownregistry.com/a/art_6wtlqfftjrlgrpd2)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 12 versions of this file, between Jul 11, 2026 and Nov 2, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
git:20261102.b666e3d latest2026-11-02 b666e3d 23,994 BA view · diff
git:20261102.650ca912026-11-02 650ca91 23,604 BA view · diff
git:20261025.18d4c5d2026-10-25 18d4c5d 18,556 BA view · diff
git:20261021.9e4af402026-10-21 9e4af40 17,323 BA view · diff
git:20261020.fd49c312026-10-20 fd49c31 15,437 BA view · diff
git:20261020.334f4d72026-10-20 334f4d7 12,787 BA view · diff
git:20261014.972668c2026-10-14 972668c 12,076 BA view · diff
git:20261013.3852b8a2026-10-13 3852b8a 9,995 BA view · diff
git:20261013.8cbca392026-10-13 8cbca39 8,425 BA view · diff
git:20260901.18287912026-09-01 1828791 7,397 BA view · diff
git:20260713.5e3a14d2026-07-13 5e3a14d 5,613 BA view · diff
git:20260711.0e181322026-07-11 0e18132 4,945 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (23994 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

vibeic/vibe-ic · 32 stars · license Apache-2.0 · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_6wtlqfftjrlgrpd2
GET https://markdownregistry.com/api/v1/resolve?ref=vibeic/vibe-ic/testbench-gen
GET https://markdownregistry.com/api/v1/blob/defd50ab13fa62747f1a351b190e0c36c5ae6d3f4f9be610bedfefb92f10d850

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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