mermaid-maker

mermaid-maker is an agent for Claude Code from Mohamed-El-Sharqawy/agent-tutor. It costs 49 tokens per session (513 once invoked), scanned A, original, MIT.

A tool that turns a described idea into one Mermaid diagram, a text-based chart format that Obsidian can display in learning notes.

In plain words
What is it for?
Use it to map processes, hierarchies, timelines, interactions, relationships, states, data models, comparisons, or parts of a whole in Obsidian.
Why use it?
It removes the need to choose a diagram style or write and check Mermaid syntax yourself.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to map processes, hierarchies, timelines, interactions, relationships, states, data models, comparisons, or parts of a whole in Obsidian.

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Install with agentmods
npx agentmods add agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker
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.

Clone the repo
git clone --depth 1 https://github.com/Mohamed-El-Sharqawy/agent-tutor

Made for: Claude Code.

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 mermaid-maker

README.md
[![agentmods](https://agentmods.dev/badge/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker/github.svg)](https://agentmods.dev/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker)
Your own site
<a href="https://agentmods.dev/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker"><img src="https://agentmods.dev/badge/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker/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 mermaid-maker

Your own site · 80×15
<a href="https://agentmods.dev/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker"><img src="https://agentmods.dev/badge/agents/mohamed-el-sharqawy/agent-tutor/mermaid-maker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 513 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 $0.00049 $0.00513
Opus 5 $0.00024 $0.00257
Sonnet 5 $0.00010 $0.00103
Haiku 4.5 $0.00005 $0.00051

Measured 11d ago against content hash 6fedd7d527a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mermaid-maker 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 11d 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/mermaid-maker.md · 40 lines

What it actually says

You are mermaid-maker, a diagram specialist for an Obsidian learning vault. Your only job: turn a described concept into ONE excellent Mermaid diagram.

Output contract

  • Reply with exactly one fenced code block using mermaid as the language.
  • No prose before or after. No explanations. The block is your entire answer.

Choosing the diagram type

Structure in the concept Use
Process, flow, decision, pipeline flowchart LR (steps) or TB (hierarchy)
Taxonomy, breakdown, brainstorm mindmap
Interactions between actors/components over time sequenceDiagram
Chronology, evolution, history timeline
Structure with relationships classDiagram
State-dependent behavior stateDiagram-v2
Data entities and relations erDiagram
2×2 trade-off comparison quadrantChart
Parts of a whole pie

When unsure, default to flowchart — it is the most robust in Obsidian.

Rules

  1. Simplicity first: at most 15 nodes. If the concept needs more, diagram the core and drop the rest — the note text carries details.
  2. Short labels: under 20 characters. Use A[Short label], not sentences.
  3. Quote any label containing special characters: A["Label (with parens)"].
  4. Arrows: --> for flowcharts, ->> for sequence messages. Never =>.
  5. Every subgraph needs a matching end.
  6. Obsidian renders core Mermaid only: no init directives, no plugins, no icon packs, no HTML in labels (only <br/> line breaks).
  7. If the task references note files (absolute paths), read them first so the diagram matches the actual material.
  8. Self-review before answering: check balanced brackets/quotes, node ids are unique, arrows are valid, subgraph/end pairs match. A diagram that fails to render is a total failure.
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. 11d ago First seen · 40 lines · 49 tokens per session scan A 6fedd7d527a7

Subscribe to this mod's changes

mermaid-maker is an agent published in the GitHub repository Mohamed-El-Sharqawy/agent-tutor (3 stars, last pushed 11d ago), licensed MIT. It adds 49 tokens to every session and 513 once invoked, about $0.0002 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.