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 managedcode/dotnet-skills --skill htmlhintgit clone --depth 1 https://github.com/managedcode/dotnet-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/managedcode/dotnet-skills/htmlhint)<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/htmlhint"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/htmlhint/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/managedcode/dotnet-skills/htmlhint"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/htmlhint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 52 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 53 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00105 | $0.01109 |
| Opus 5.5 | $0.00042 | $0.00444 |
| Sonnet 5.5 | $0.00021 | $0.00222 |
| Haiku 4.5 | $0.00011 | $0.00111 |
Grade A, and why
htmlhint 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 1mo 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- dotnet-htmlhint — 88% identical, 8 lines differ
- dotnet-htmlhint — 86% identical, 10 lines differ
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HTMLHint for Static HTML in .NET Repositories
Trigger On
- the repo has static HTML files, generated frontend output, or standalone templates under
wwwroot/,dist/, or other web folders - the user asks for HTML structure checks, invalid attribute detection, or basic DOM-quality linting
- the repo wants a narrow HTML gate separate from JS, CSS, and full-site runtime audits
Do Not Use For
- raw
.cshtmlor.razorsource with server-side directives; lint the rendered or published output instead - JavaScript or TypeScript linting; route that to
eslint - runtime performance, accessibility, SEO, or headers; route that to
webhint
Inputs
- the nearest
AGENTS.md package.json.htmlhintrcor equivalent config if present- the real static HTML target: source templates, built output, or deployed URL
Workflow
- Choose the right target first:
- static HTML source files
- generated build output such as
dist/ - a reachable URL when the page is already served
- Prefer repo-local installation and checked-in config for repeatable runs.
- Keep HTMLHint focused on static HTML correctness and lightweight policy.
- Add narrow scripts to
package.json, for example:htmlhint "dist/**/*.html"htmlhint "wwwroot/**/*.html"
- If the repo has templating syntax that confuses the parser, lint the rendered output instead of forcing source templates through the tool.
- Use rule overrides deliberately for real project conventions; do not disable broad classes of checks just to make a noisy first pass green.
- Rerun the publish or frontend build flow if fixes touched generated or packaged HTML sources.
Bootstrap When Missing
- Detect current state:
rg --files -g 'package.json' -g '.htmlhintrc*' -g '*.html'rg -n '"htmlhint"' --glob 'package.json' .
- Prefer a repo-local install:
npm install --save-dev htmlhint
- Add or refine
.htmlhintrconly after confirming the actual target files. - Add repeatable commands to
AGENTS.mdandpackage.json, then verify with:npx htmlhint "dist/**/*.html"npx htmlhint https://example.com
- Return
status: configuredif HTMLHint now owns a clear static-HTML gate, orstatus: improvedif the existing setup was tightened. - Return
status: not_applicablewhen the repo's HTML is primarily server-rendered templates that should be validated after rendering instead.
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.
- 1mo ago First seen · 99 lines · 105 tokens per session scan A c0ba146956a4
htmlhint is a skill published in the GitHub repository managedcode/dotnet-skills (496 stars, last pushed yesterday), licensed MIT. It adds 105 tokens to every session and 1,109 once invoked, about $0.0004 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 2026-09-03.
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