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 agentmods add skills/plannotator/effective-html/html-wireframenpx skills add plannotator/effective-html --skill html-wireframegit clone --depth 1 https://github.com/plannotator/effective-htmlWhat 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 | $0.00087 | $0.00937 |
| Opus 5 | $0.00044 | $0.00468 |
| Sonnet 5 | $0.00017 | $0.00187 |
| Haiku 4.5 | $0.00009 | $0.00094 |
Grade A, and why
html-wireframe 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 yesterday.
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 — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HTML Wireframe
Turn a product question into a low-fidelity HTML artifact that is easy to inspect, change, and discuss. The wireframe should help reviewers decide what belongs on the screen and how the task should work. It should not look like a finished product.
Establish the review question
Read the conversation, supplied brief, and nearby project material before choosing a layout. Reuse the project's vocabulary, content model, and known product constraints.
Authority runs in this order:
- The user's explicit instructions and accepted decisions.
- The product's existing structure and terminology.
- The user, task, and content being modeled.
- Your own layout judgment.
Before coding, identify:
- the user and the job they need to complete;
- the screen or bounded flow under review;
- the information and actions the artifact must contain;
- the assumptions that can be made safely;
- the structural questions the wireframe should help answer.
Use real labels and representative content. Low fidelity is not permission to use anonymous boxes or lorem ipsum where wording affects the layout.
Explore structure before style
When design-artifact is available, read it for
subject-specific composition and hierarchy guidance without importing editorial
polish. This skill's low-fidelity contract remains authoritative.
When the layout is still unsettled, create two or three meaningfully different directions. Vary product decisions such as:
- navigation model;
- grouping and order;
- primary-action placement;
- content density;
- overview versus step-by-step flow;
- desktop-to-mobile reflow.
Do not call color changes or minor card rearrangements separate directions. Give each direction a short descriptive name and one sentence about its tradeoff.
Keep the directions in one HTML file when practical. Use a small, keyboard-operable selector so reviewers can compare them without opening several files. Preserve the same core content and task across directions. If the user has already chosen a structure, build that direction only.
What ships with it
1 file 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.
- yesterday First seen · 87 lines · 87 tokens per session scan A b1d649ef9052
html-wireframe is a skill published in the GitHub repository plannotator/effective-html (2,735 stars, last pushed 28d ago), licensed MIT. It adds 87 tokens to every session and 937 once invoked, about $0.0004 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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