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 pantheon-org/tekhne --skill defuddlegit clone --depth 1 https://github.com/pantheon-org/tekhneWrote 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/pantheon-org/tekhne/defuddle)<a href="https://agentmods.dev/skills/pantheon-org/tekhne/defuddle"><img src="https://agentmods.dev/badge/skills/pantheon-org/tekhne/defuddle/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/pantheon-org/tekhne/defuddle"><img src="https://agentmods.dev/badge/skills/pantheon-org/tekhne/defuddle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00054 | $0.01101 |
| Opus 5 | $0.00027 | $0.00550 |
| Sonnet 5 | $0.00011 | $0.00220 |
| Haiku 4.5 | $0.00005 | $0.00110 |
Grade A, and why
defuddle 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 9d 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Defuddle
Use Defuddle CLI to extract clean readable content from web pages. Prefer over WebFetch for standard web pages — it removes navigation, ads, and clutter, reducing token usage.
If not installed: npm install -g defuddle
Mindset
Defuddle is a server-side HTML stripper, not a browser. Think of it as getting the printed article without the magazine wrapper — it fetches raw HTML and removes boilerplate, always faster and cheaper than WebFetch for standard pages.
When to apply: Any standard HTTP page — documentation, articles, blog posts, wikis. When NOT to apply: SPAs requiring JavaScript, login-gated pages, JSON API endpoints, or pages behind auth redirects.
When in doubt, try defuddle first; if the output is empty or navigation-only, fall back to WebFetch.
Quick Start
- Confirm the URL is a standard web page (not a SPA or auth-required page)
- Run
defuddle parse <url> --mdto extract clean markdown - If output is empty or only navigation text, fall back to WebFetch
- Save output with
-o file.mdwhen persistence is needed
When to Use
Use this decision framework before fetching any URL:
| Scenario | Tool | Reason |
|---|---|---|
| Article, blog post, documentation page | defuddle (ALWAYS) | Removes clutter, saves tokens |
| Standard web page with readable text | defuddle (ALWAYS) | Cleaner output than WebFetch |
| JavaScript-heavy SPA (React/Vue app shell) | WebFetch or inform user | defuddle cannot execute JS |
| Login-gated or auth-required page | WebFetch or inform user | defuddle fetches without credentials |
| API endpoint returning JSON | Direct fetch or inform user | defuddle is for HTML pages |
| User asks for metadata only (title, description) | defuddle parse <url> -p <field> |
Lightweight extraction |
Mental model: defuddle is a server-side HTML parser — it downloads the HTML, strips boilerplate, and returns clean prose. It cannot authenticate, execute JavaScript, or follow redirects that require cookies. When in doubt about a URL, try defuddle first; if the output is empty or only navigation text, fall back to WebFetch.
What ships with it
9 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.
- 9d ago First seen · 146 lines · 54 tokens per session scan A f90a789cbeb5
defuddle is a skill published in the GitHub repository pantheon-org/tekhne (10 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 1,101 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 2026-09-03.
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