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 tractorjuice/arckit-gemini --skill mermaid-syntaxgit clone --depth 1 https://github.com/tractorjuice/arckit-geminiWrote 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/tractorjuice/arckit-gemini/mermaid-syntax)<a href="https://agentmods.dev/skills/tractorjuice/arckit-gemini/mermaid-syntax"><img src="https://agentmods.dev/badge/skills/tractorjuice/arckit-gemini/mermaid-syntax/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/tractorjuice/arckit-gemini/mermaid-syntax"><img src="https://agentmods.dev/badge/skills/tractorjuice/arckit-gemini/mermaid-syntax.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 | $0.00099 | $0.01543 |
| Opus 5 | $0.00049 | $0.00772 |
| Sonnet 5 | $0.00020 | $0.00309 |
| Haiku 4.5 | $0.00010 | $0.00154 |
Grade A, and why
mermaid-syntax 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 5d 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 — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mermaid Syntax Reference
A comprehensive reference for all 23 Mermaid diagram types plus configuration and theming. This skill provides official Mermaid syntax documentation sourced from the mermaid-skill project (auto-synced from upstream Mermaid docs).
This skill ships reference material, not runnable scripts. Read the relevant reference file with Read, apply the syntax, and write the diagram into the user's artefact. Do not Bash-execute anything from references/ — they are Mermaid syntax docs, not commands.
To look up syntax for a specific diagram type, identify the type from the table below and read the corresponding reference file.
Supported Diagram Types
Select the appropriate diagram type and read the corresponding reference file:
| Type | Reference | ArcKit Commands Using It |
|---|---|---|
| Flowchart | flowchart.md | /arckit:diagram, /arckit:dfd, /arckit:roadmap, /arckit:plan, /arckit:backlog, /arckit:strategy, /arckit:story, /arckit:jsp-936 |
| Sequence Diagram | sequenceDiagram.md | /arckit:diagram |
| Class Diagram | classDiagram.md | — |
| State Diagram | stateDiagram.md | — |
| ER Diagram | entityRelationshipDiagram.md | /arckit:data-model |
| Gantt Chart | gantt.md | /arckit:roadmap, /arckit:plan, /arckit:strategy, /arckit:story, /arckit:presentation |
| Pie Chart | pie.md | /arckit:story, /arckit:presentation |
| Mindmap | mindmap.md | /arckit:story |
| Timeline | timeline.md | /arckit:story |
| Git Graph | gitgraph.md | — |
| Quadrant Chart | quadrantChart.md | /arckit:presentation |
| Requirement Diagram | requirementDiagram.md | — |
| C4 Diagram | c4.md | /arckit:diagram, /arckit:presentation |
| Sankey Diagram | sankey.md | — |
| XY Chart | xyChart.md | — |
| Block Diagram | block.md | — |
| Packet Diagram | packet.md | — |
| Kanban | kanban.md | — |
| Architecture Diagram | architecture.md | — |
| Radar Chart | radar.md | — |
| Treemap | treemap.md | — |
| User Journey | userJourney.md | — |
| ZenUML | zenuml.md | — |
What ships with it
31 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.
- references/architecture.md 6.3 KB
- references/block.md 24 KB
- references/c4-layout-science.md 21 KB
- references/c4.md 31 KB
- references/classDiagram.md 24 KB
- references/config-configuration.md 2.2 KB
- references/config-directives.md 9.9 KB
- references/config-layouts.md 877 B
- references/config-math.md 3.5 KB
- references/config-theming.md 15 KB
- references/config-tidy-tree.md 1.6 KB
- references/entityRelationshipDiagram.md 20 KB
- references/examples.md 7.6 KB
- references/flowchart.md 51 KB
- references/gantt.md 30 KB
- references/gitgraph.md 51 KB
- references/kanban.md 6.0 KB
- references/mindmap.md 8.9 KB
- references/packet.md 3.8 KB
- references/pie.md 2.8 KB
- references/quadrantChart.md 12 KB
- references/radar.md 7.6 KB
- references/requirementDiagram.md 10 KB
- references/sankey.md 7.9 KB
- references/sequenceDiagram.md 32 KB
- references/stateDiagram.md 16 KB
- references/timeline.md 15 KB
- references/treemap.md 8.8 KB
- references/userJourney.md 1.2 KB
- references/xyChart.md 9.0 KB
- references/zenuml.md 8.6 KB
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.
- 5d ago Changed · +4 lines · +38 tokens per session b6c4acbe68b6
- 10d ago First seen · 82 lines · 61 tokens per session scan A 3637374125fe
mermaid-syntax is a skill published in the GitHub repository tractorjuice/arckit-gemini (3 stars, last pushed 6d ago), licensed MIT. It adds 99 tokens to every session and 1,543 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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