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.
npx skills add JinLee794/agent-framework-skills --skill mermaid-diagramsgit clone --depth 1 https://github.com/JinLee794/agent-framework-skillsWrote 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.
[](https://agentmods.dev/skills/jinlee794/agent-framework-skills/mermaid-diagrams)<a href="https://agentmods.dev/skills/jinlee794/agent-framework-skills/mermaid-diagrams"><img src="https://agentmods.dev/badge/skills/jinlee794/agent-framework-skills/mermaid-diagrams/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.
<a href="https://agentmods.dev/skills/jinlee794/agent-framework-skills/mermaid-diagrams"><img src="https://agentmods.dev/badge/skills/jinlee794/agent-framework-skills/mermaid-diagrams.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00105 | $0.01004 |
| Opus 5 | $0.00053 | $0.00502 |
| Sonnet 5 | $0.00021 | $0.00201 |
| Haiku 4.5 | $0.00011 | $0.00100 |
Grade A, and why
mermaid-diagrams 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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mermaid Diagrams
Unrelated to MAF — this is editor tooling. It is a skill rather than an always-on instruction file precisely so it costs nothing on the many tasks that involve no diagram.
Workflow
- Pick the diagram type and check its syntax with
get-syntax-docs-mermaidif you have not authored that type recently. - Write the diagram to a
.mmdfile in the project. - Validate with
mermaid-diagram-validatorbefore showing the diagram to the user. Never return unvalidated Mermaid syntax. - Preview with
mermaid-diagram-previewafter generating. For a diagram that already exists as a file, passdocumentUri, notcode.
LM tools
| Tool | Use |
|---|---|
get-syntax-docs-mermaid |
Fetch syntax docs for a diagram type — do this before authoring an unfamiliar one |
mermaid-diagram-validator |
Validate syntax. Required before presenting any diagram |
mermaid-diagram-preview |
Render a live preview in VS Code. Required after generating |
VS Code commands
Invoke via the Command Palette or the command API. Do not invent command IDs — prefer writing
or editing a .mmd file when no command is needed.
| Command | ID | Notes |
|---|---|---|
| Preview | mermaidChart.preview |
Requires an open .mmd / .mermaid editor |
| Create Diagram | mermaidChart.createMermaidFile |
Demo flowchart + side-by-side preview |
| Repair Diagram | mermaidChart.repairDiagram |
Consumes Mermaid AI credits — tell the user first |
| Improve Diagram | mermaidChart.improveDiagram |
Layout and styling variants via the LM API |
| Install AI Skills | mermaidChart.installAiSkills |
Reinstalls this pack — see the caveat below |
Generation commands (need GitHub Copilot): mermaidChart.generateDiagramFromCode,
generateCloudDiagram, generateERDiagram, generateDockerDiagram,
mermaidChart.openCopilotChat.
Cloud commands: mermaidChart.login / logout,
mermaidChart.connectDiagramToMermaidChart, mermaidChart.syncDiagramWithMermaid (only for
diagrams whose frontmatter already carries an id:).
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.
- 11d ago First seen · 85 lines · 105 tokens per session scan A eee39105ebd8
mermaid-diagrams is a skill published in the GitHub repository JinLee794/agent-framework-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 105 tokens to every session and 1,004 once invoked, about $0.0005 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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