diagram

diagram is a skill for Claude Code, Codex from victusfate/scaffold. It costs 135 tokens per session (177 once invoked), scanned A, original, MIT.

A diagram tool that uses Mermaid text files as the source for diagrams. It can preview changes in a browser or other supported viewers.

In plain words
What is it for?
Creating and updating flowcharts, system diagrams, and other Mermaid diagrams from .mmd files.
Why use it?
It keeps the diagram and its editable text together, so updates do not require redrawing the image by hand.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Creating and updating flowcharts, system diagrams, and other Mermaid diagrams from .mmd files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/victusfate/scaffold/diagram
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 victusfate/scaffold --skill diagram
Clone the repo
git clone --depth 1 https://github.com/victusfate/scaffold

Made for: Claude Code, Codex.

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 diagram

README.md
[![agentmods](https://agentmods.dev/badge/skills/victusfate/scaffold/diagram/github.svg)](https://agentmods.dev/skills/victusfate/scaffold/diagram)
Your own site
<a href="https://agentmods.dev/skills/victusfate/scaffold/diagram"><img src="https://agentmods.dev/badge/skills/victusfate/scaffold/diagram/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 diagram

Your own site · 80×15
<a href="https://agentmods.dev/skills/victusfate/scaffold/diagram"><img src="https://agentmods.dev/badge/skills/victusfate/scaffold/diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 135 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 177 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 original 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 $0.00135 $0.00177
Opus 5 $0.00068 $0.00088
Sonnet 5 $0.00027 $0.00035
Haiku 4.5 $0.00014 $0.00018

Measured 9d ago against content hash 53fa8bd7e828, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

diagram 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 9d 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.

.agents/skills/diagram/SKILL.md · 11 lines

What it actually says

Read and follow the complete skill instructions in skills/diagram.md.

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. 9d ago First seen · 11 lines · 135 tokens per session scan A 53fa8bd7e828

Subscribe to this mod's changes

diagram is a skill published in the GitHub repository victusfate/scaffold (6 stars, last pushed today), licensed MIT. It adds 135 tokens to every session and 177 once invoked, about $0.0007 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 2026-08-31.

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