Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add f-labs-io/agent-html-skills/plugin install html-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/f-labs-io/agent-html-skills/html-mind-map)<a href="https://agentmods.dev/skills/f-labs-io/agent-html-skills/html-mind-map"><img src="https://agentmods.dev/badge/skills/f-labs-io/agent-html-skills/html-mind-map.svg" alt="Measured on agentmods" 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 | $0.00107 | $0.02890 |
| Opus 5 | $0.00053 | $0.01445 |
| Sonnet 5 | $0.00021 | $0.00578 |
| Haiku 4.5 | $0.00011 | $0.00289 |
Grade A, and why
html-mind-map 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 3d 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 — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HTML Mind Map & Concept Map
Some thinking is tree-shaped or graph-shaped: brainstorming variations of an idea, mapping a knowledge domain, working through "what if X is the cause" debugging trees, or organizing nested concepts. A mind map externalizes that structure so the user can see it, rearrange it, and hand it back to the agent for the next step.
Pre-flight — run BEFORE writing the artifact
Invoke html-skills:html-skills-listen (Skill tool) first; it is idempotent. If it returns a URL, inject it verbatim as window.__CLAUDE_SUBMIT_URL__ in the HTML you are about to write, ?t= query string included (a local, single-session loopback handshake — not a credential). If it reported web/sandbox mode, leave that line out; submitToClaude then falls back to clipboard mode.
When to use this skill
- "Brainstorm / map out / explore X"
- "What are all the possibilities for Y"
- "Help me think through the causes of Z"
- "Organize these ideas / concepts / hypotheses"
- "Build me a concept map for X"
- Any explanation that branches recursively
Output requirements
Nodes draggable. New nodes addable inline. Connections between nodes (most often a tree, sometimes a graph). Always include one Submit button that sends the map back as a structured tree in the standard envelope.
The map starts populated with whatever the user provided as starting nodes; the user expands from there.
Boundary: this skill captures and rearranges the user's ideas as an editable tree. When the user wants Claude to generate N distinct alternatives to compare, use html-brainstorm-grid; for a written plan, html-spec-planning.
Core structure
- Canvas — the main interactive area where nodes live
- Root / starting node — central, larger, anchored
- Branches — child nodes radiating outward (or hanging downward)
- Connections — lines (sometimes labeled) showing parent-child or relational links
- Toolbar — add node, delete, reset
- Submit — one button that sends the tree back
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.
- 3d ago Changed · -67 lines d8cc6e1892bb
- 8d ago First seen · 251 lines · 107 tokens per session scan A 49b2955b35b2
html-mind-map is a skill published in the GitHub repository f-labs-io/agent-html-skills (55 stars, last pushed 5d ago), licensed MIT. It adds 107 tokens to every session and 2,890 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 2026-08-30.
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