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/owainlewis/blueprint/html-docnpx skills add owainlewis/blueprint --skill html-docgit clone --depth 1 https://github.com/owainlewis/blueprintWrote 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/owainlewis/blueprint/html-doc)<a href="https://agentmods.dev/skills/owainlewis/blueprint/html-doc"><img src="https://agentmods.dev/badge/skills/owainlewis/blueprint/html-doc.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 | $0.00051 | $0.01095 |
| Opus 5 | $0.00026 | $0.00548 |
| Sonnet 5 | $0.00010 | $0.00219 |
| Haiku 4.5 | $0.00005 | $0.00110 |
Grade A, and why
html-doc 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 4d 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 — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HTML document
Turn one complete Markdown PRD or technical design into one verified static HTML page. Keep Markdown canonical. Change presentation, not meaning.
Boundaries
- Accept an existing Markdown file or exact inline Markdown.
- Support only
prdanddesigndocument kinds. - Infer the kind only from the exact basename
prd.mdordesign.md. Otherwise require the user or request to name it. - Do not write requirements, settle design choices, summarize missing content, or edit the source.
- If the source is only a rough brief, use the appropriate authoring skill first.
- Do not hand-edit generated HTML. Change the template or renderer, then regenerate.
- Do not publish or host the result unless the user separately asks.
Requirements
Generation requires Python 3.11 or newer, Pandoc 3 or newer, Node.js 22.12 or newer, and npm. The skill directory contains a locked Mermaid dependency tree.
Before the first Mermaid render, run:
npm ci --prefix <skill-directory>
Use scripts/html_doc.py from this skill directory for all generation and lifecycle operations.
Workflow
1. Read and classify the source
Read the complete source. Confirm it is no larger than 2 MiB. Determine the document kind from the request or the exact basename rule.
Treat content problems separately from presentation problems. If the Markdown contradicts itself, omits a required decision, or contains an invalid diagram, report that source problem. Do not silently repair its meaning.
2. Create a candidate
For a file source:
python3 <skill-directory>/scripts/html_doc.py render <source.md> --kind <prd-or-design> --out <output.html>
--kind may be omitted only for exact prd.md and design.md basenames. --out may be omitted to create a sibling HTML file.
For exact inline Markdown, pipe it through standard input and provide both kind and output:
python3 <skill-directory>/scripts/html_doc.py render --inline --kind <prd-or-design> --out <output.html>
What ships with it
10 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.
- 4d ago First seen · 118 lines · 51 tokens per session scan A 4e4ae8520b56
html-doc is a skill published in the GitHub repository owainlewis/blueprint (375 stars, last pushed 5d ago), licensed MIT. It adds 51 tokens to every session and 1,095 once invoked, about $0.0003 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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