gf-build

gf-build is a skill for Claude Code from codejunkie99/Gateflow-Plugin. It costs 57 tokens per session (2,011 once invoked), scanned A, original, no licence file.

A build coordinator for SystemVerilog, a language used to describe digital hardware. It splits a large hardware design into separate modules, builds them in parallel, checks each part, and then combines them.

In plain words
What is it for?
It is for building and verifying designs such as a RISC-V CPU, including parts like an arithmetic unit, register file, decoder, and control logic.
Why use it?
It helps manage large hardware builds by separating independent work and checking components before integration.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the gateflow plugin — 27 skills, 21 commands, 5 hooks shipped together

Good fit It is for building and verifying designs such as a RISC-V CPU, including parts like an arithmetic unit, register file, decoder, and control logic.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/codejunkie99/gateflow-plugin/gf-build
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add codejunkie99/Gateflow-Plugin --skill gf-build
Clone the repo
git clone --depth 1 https://github.com/codejunkie99/Gateflow-Plugin

Made for: Claude Code.

Or install gateflow, the plugin that ships this one along with the rest of its 27 skills, 21 commands, 5 hooks.

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 gf-build

README.md
[![agentmods](https://agentmods.dev/badge/skills/codejunkie99/gateflow-plugin/gf-build/github.svg)](https://agentmods.dev/skills/codejunkie99/gateflow-plugin/gf-build)
Your own site
<a href="https://agentmods.dev/skills/codejunkie99/gateflow-plugin/gf-build"><img src="https://agentmods.dev/badge/skills/codejunkie99/gateflow-plugin/gf-build/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.

agentmods 80×15 button for gf-build

Your own site · 80×15
<a href="https://agentmods.dev/skills/codejunkie99/gateflow-plugin/gf-build"><img src="https://agentmods.dev/badge/skills/codejunkie99/gateflow-plugin/gf-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,011 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 $0.00057 $0.02011
Opus 5.5 $0.00023 $0.00804
Sonnet 5.5 $0.00011 $0.00402
Haiku 4.5 $0.00006 $0.00201

Measured 1mo ago against content hash ad5e967b0146, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gf-build 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 1mo ago.

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.

plugins/gateflow/skills/gf-build/SKILL.md · 336 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 1mo ago First seen · 336 lines · 57 tokens per session scan A ad5e967b0146

Subscribe to this mod's changes

gf-build is a skill published in the GitHub repository codejunkie99/Gateflow-Plugin (117 stars, last pushed 1mo ago), with no licence file. It adds 57 tokens to every session and 2,011 once invoked, about $0.0002 per session on Opus 5.5. 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.