Borrowing it
Nothing to install: this file belongs to xberg-io/crawlberg. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/xberg-io/crawlberg/main/.agents/skills/mcp/SKILL.mdgit clone --depth 1 https://github.com/xberg-io/crawlbergWrote 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/crawlberg/mcp)<a href="https://agentmods.dev/skills/xberg-io/crawlberg/mcp"><img src="https://agentmods.dev/badge/skills/xberg-io/crawlberg/mcp.svg" alt="Measured on agentmods" 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 | $0.00011 | $0.00308 |
| Opus 5 | $0.00005 | $0.00154 |
| Sonnet 5 | $0.00002 | $0.00062 |
| Haiku 4.5 | $0.00001 | $0.00031 |
Grade A, and why
mcp 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.
What it actually says
crawlberg MCP Reference
Use this skill when integrating crawlberg through Model Context Protocol tools, prompts, or resources.
batch_crawl: Crawl multiple seed URLs concurrently. Returns crawl results for all seeds.batch_scrape: Scrape multiple URLs concurrently. Returns results for all URLs.crawl: Crawl a website following links. Returns content for all discovered pages up to max_depth/max_pages.download: Download a document from a URL. Returns metadata about the downloaded file.generate_citations: Convert markdown links into numbered citations with an appended reference list.get_version: Get the current crawlberg library version.interact: Execute browser actions on a page. Actions may mutate page or application state.map: Discover all pages on a website via links and sitemaps. Returns a list of discovered URLs.scrape: Scrape a single URL and extract content as markdown or JSON. Returns page content, metadata, links, and images.
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 Changed 9f21454bbbea
- 8d ago First seen · 24 lines · 11 tokens per session scan A 231b72f3d97e
mcp is a skill published in the GitHub repository xberg-io/crawlberg (169 stars, last pushed yesterday), licensed MIT. It adds 11 tokens to every session and 308 once invoked, about $0.0001 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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