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 xberg-io/html-to-markdown --skill html-to-markdown-converting-htmlgit clone --depth 1 https://github.com/xberg-io/html-to-markdownWrote 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/xberg-io/html-to-markdown/html-to-markdown-converting-html)<a href="https://agentmods.dev/skills/xberg-io/html-to-markdown/html-to-markdown-converting-html"><img src="https://agentmods.dev/badge/skills/xberg-io/html-to-markdown/html-to-markdown-converting-html/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/xberg-io/html-to-markdown/html-to-markdown-converting-html"><img src="https://agentmods.dev/badge/skills/xberg-io/html-to-markdown/html-to-markdown-converting-html.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 | $0.00034 | $0.01061 |
| Opus 5.5 | $0.00014 | $0.00424 |
| Sonnet 5.5 | $0.00007 | $0.00212 |
| Haiku 4.5 | $0.00003 | $0.00106 |
Grade A, and why
html-to-markdown-converting-html 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 — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Converting HTML
Use this when the user wants to turn HTML into clean Markdown (or Djot) — a
saved page, an HTML email body, a fragment, or a string. Conversion is driven by
flags with a positional FILE (stdin is the default input when no file is
given); the only subcommand is mcp (run-as-server, see the
html-to-markdown-using-the-mcp-server skill).
Basic conversion
# File to stdout
html-to-markdown input.html
# File to a file
html-to-markdown input.html -o output.md
# From stdin
cat page.html | html-to-markdown
echo '<h1>Title</h1><p>Body</p>' | html-to-markdown
The default (no --json) prints plain Markdown text. Use --json only when you
need structured metadata/tables (see the html-to-markdown-extracting-metadata and
html-to-markdown-extracting-tables skills).
Output format
html-to-markdown input.html --output-format markdown # default
html-to-markdown input.html --output-format djot # Djot markup
html-to-markdown input.html -f djot # short form
To get plain text (no Markdown syntax), strip tags and treat blocks inline:
html-to-markdown input.html --convert-as-inline --strip-tags "script,style"
Heading and code-block styles
| Flag | Values | Default | Effect |
|---|---|---|---|
--heading-style |
atx, underlined, atx-closed |
atx |
# h1 vs h1\n=== vs # h1 # |
--code-block-style |
backticks, indented, tildes |
backticks |
Fence style for code blocks |
--code-language / -l |
string | "" |
Default language for fenced blocks |
html-to-markdown input.html --heading-style underlined --code-block-style tildes
Lists and text formatting
# Bullet characters cycle by nesting depth; indent width 1–8
html-to-markdown input.html --bullets '*+-' --list-indent-width 2
# Indent with tabs instead of spaces
html-to-markdown input.html --list-indent-type tabs
# Emphasis symbol and escaping
html-to-markdown input.html --strong-em-symbol _ --escape-misc
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.
- 4d ago First seen · 130 lines · 34 tokens per session scan A 4ea5cd6f0c7b
html-to-markdown-converting-html is a skill published in the GitHub repository xberg-io/html-to-markdown (881 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 1,061 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-15.
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