A routing hub for Mermaid diagram skills, where Mermaid is a text-based format for creating diagrams.

Use it as part of a setup that handles Mermaid diagram skills.

The description does not specify a separate user-facing task beyond directing Mermaid-related skills.

mermaid — Skill for Claude Code by diegomarino

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 diegomarino/claude-toolshed --skill mermaid

Clone the repo

git clone --depth 1 https://github.com/diegomarino/claude-toolshed

Made for: Claude Code.

Or install mermaid, the plugin that ships this one along with the rest of its 6 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/mermaid/github.svg)](https://agentmods.dev/skills/diegomarino/claude-toolshed/mermaid)

Your own site

<a href="https://agentmods.dev/skills/diegomarino/claude-toolshed/mermaid"><img src="https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/mermaid/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/diegomarino/claude-toolshed/mermaid"><img src="https://agentmods.dev/badge/skills/diegomarino/claude-toolshed/mermaid.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,607 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.

Model	Per session	Once invoked
Fable 5.1	$0.00011	$0.01607
Opus 5	$0.00005	$0.00804
Sonnet 5	$0.00002	$0.00321
Haiku 4.5	$0.00001	$0.00161

Measured 10d ago against content hash 8d60c4607b38, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mermaid 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 10d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/ensure-deps.sh, scripts/extract_mermaid.js, scripts/render.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/mermaid/skills/mermaid/SKILL.md · 128 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

34 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.

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.

10d ago First seen · 128 lines · 11 tokens per session scan A 8d60c4607b38

Subscribe to this mod's changes

mermaid is a skill published in the GitHub repository diegomarino/claude-toolshed (58 stars, last pushed 5mo ago), with no licence file. It adds 11 tokens to every session and 1,607 once invoked, about $0.0001 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.

Design and UX

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A self-contained WebGL2 hero: thin-film interference over a crushed-foil surface whose palette shifts with the viewing angle; move the cursor to tilt the film.

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OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.

nexu-io/open-design · 53 tokens

html-ppt-taste-brutalist

16:9 HTML deck in tactical-telemetry / CRT-terminal taste. Deactivated-CRT charcoal slides, white-phosphor monospace, hazard-red accent, scanline overlay, ASCII syntax, density over decoration. Distilled from Leonxlnx/taste-skill brutalist-skill (Tactical Telemetry mode).

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mermaid