Borrowing it
Nothing to install: this file belongs to NeuroFusionAI/fibo-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/NeuroFusionAI/fibo-mcp/main/.claude/skills/diagramming_expert/SKILL.mdgit clone --depth 1 https://github.com/NeuroFusionAI/fibo-mcpWrote 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/neurofusionai/fibo-mcp/diagramming_expert)<a href="https://agentmods.dev/skills/neurofusionai/fibo-mcp/diagramming_expert"><img src="https://agentmods.dev/badge/skills/neurofusionai/fibo-mcp/diagramming_expert/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/neurofusionai/fibo-mcp/diagramming_expert"><img src="https://agentmods.dev/badge/skills/neurofusionai/fibo-mcp/diagramming_expert.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 | $0.00092 | $0.02286 |
| Opus 5 | $0.00046 | $0.01143 |
| Sonnet 5 | $0.00018 | $0.00457 |
| Haiku 4.5 | $0.00009 | $0.00229 |
Grade A, and why
diagramming-expert 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 12d 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.
This is a copy
98% identical to diagramming-expert — 26 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 276 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Diagramming Expert
Master of text-based visual communication. Proactively creates diagrams to enhance understanding of complex concepts, systems, processes, and relationships.
Core Philosophy
"Above all else, show the data." — Edward Tufte
Diagrams should:
- Reduce cognitive load — not add to it
- Maximize signal — minimize noise (data-ink ratio)
- Be maintainable — easy to update as understanding evolves
- Work everywhere — monospace text renders universally
When to Use This Skill
Use for:
- System architectures and component relationships
- Process flows and state transitions
- Hierarchical structures (org charts, taxonomies)
- Psychological structures (psyche maps, parts work)
- Decision trees and conditional logic
- Data relationships and entity models
- Feedback loops and causal systems
- Before/after comparisons
- Timelines and sequences
NOT for:
- Photo editing or image manipulation
- Vector graphics or GUI-based design tools
- Pixel-perfect mockups (use design tools)
- Complex 3D visualizations
Ask yourself: "Would this be clearer with a picture?" If yes → diagram it.
Diagram Types Reference
See
/references/diagram-types.mdfor complete taxonomy
Quick Reference
| Type | Use For | Key Pattern |
|---|---|---|
| Flowchart | Processes, decisions | Boxes + arrows |
| Hierarchy | Org structures, taxonomies | Tree structure |
| Layers | System architecture | Stacked boxes |
| Relationship | Connections, networks | Nodes + edges |
| Sequence | Time-ordered events | Vertical flow |
| Comparison | Side-by-side analysis | Parallel columns |
| Cycle | Feedback loops | Circular arrows |
| Matrix | 2D categorization | Grid structure |
Character Reference
See
/references/unicode-characters.mdfor complete character set
Essential Characters
BOXES: ARROWS: CONNECTORS:
┌─┬─┐ ╔═╦═╗ → ← ↑ ↓ ├ ┤ ┬ ┴
│ │ │ ║ ║ ║ ◄ ► ▲ ▼ ╠ ╣ ╦ ╩
├─┼─┤ ╠═╬═╣ ⟶ ⟵ ⟷ ┼ ╋ ╬
│ │ │ ║ ║ ║ ⇒ ⇐ ⇔
└─┴─┘ ╚═╩═╝ ──► ◄── EMPHASIS:
═══ ━━━
ROUNDED: BULLETS: ═══ ━━━
╭───╮ • ○ ●
│ │ ├── └── DASHED:
╰───╯ ■ □ ▪ ┄ ┅ ┆ ┇
What ships with it
4 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.
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.
- 12d ago First seen · 276 lines · 92 tokens per session scan A bf652e4c2fcc
diagramming-expert is a skill published in the GitHub repository NeuroFusionAI/fibo-mcp (23 stars, last pushed 2mo ago), licensed MIT. It adds 92 tokens to every session and 2,286 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to diagramming-expert, differing in 26 lines, and is treated as a copy.
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