# Services from markup-tools.x402tookit.com on Zero

> markup-tools.x402tookit.com serves 8 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/markup-tools.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/markup-tools.x402tookit.com/health.json

## Services

- [Markdown Document Outline Extractor](https://www.zero.xyz/c/markdown-document-outline-extractor-aed926d9/llms.txt): $0.02/call via x402. Parses a Markdown document and returns a structured outline including front matter, headings with anchors, links, images, code blocks with language tags, and detected problems.
- [HTML Meta Tag & SEO Signals Extractor](https://www.zero.xyz/c/html-meta-tag-seo-signals-extractor-2bb88c68/llms.txt): $0.02/call via x402. Parses supplied HTML to extract and audit meta tags including title, description, canonical, robots, Open Graph, Twitter Card, and JSON-LD, and reports any missing or incomplete SEO fields.
- [HTML Link Extractor](https://www.zero.xyz/c/html-link-extractor-424cb1fe/llms.txt): $0.02/call via x402. Extracts all hyperlinks from supplied HTML, returning text, rel flags, absolute URLs, and internal/external classification
- [HTML Table Extractor](https://www.zero.xyz/c/html-table-extractor-72bacc17/llms.txt): $0.02/call via x402. Converts HTML tables into structured row/column arrays with header detection, expanding colspan and rowspan cells
- [HTML to Plain Text Converter](https://www.zero.xyz/c/html-to-plain-text-converter-4fdde0ec/llms.txt): $0.02/call via x402. Converts raw HTML into clean, readable plain text, preserving paragraphs, lists, table rows, and link text while stripping scripts, styles, and hidden elements.
- [Markdown to Plain Text Converter](https://www.zero.xyz/c/markdown-to-plain-text-converter-558461fd/llms.txt): $0.02/call via x402. Strips CommonMark/GFM Markdown syntax from text, returning clean plain text with optional link URL preservation and code block handling.
- [Readability Content Extraction from HTML](https://www.zero.xyz/c/readability-content-extraction-from-html-57e9286c/llms.txt): $0.03/call via x402. Extracts the main article content from raw HTML using heuristic text-density and tag scoring, returning cleaned text, title, byline, and a confidence score.
- [HTML Heading Outline Extractor and Validator](https://www.zero.xyz/c/html-heading-outline-extractor-and-validator-eec847c2/llms.txt): $0.02/call via x402. Extracts the h1–h6 heading hierarchy from supplied HTML and reports structural issues like missing/duplicate h1, skipped levels, and empty headings.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)