# Services from x402.feld-feder.at on Zero

> x402.feld-feder.at serves 16 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/x402.feld-feder.at
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.feld-feder.at/health.json

## Services

- [X402 PDF Document Extraction](https://www.zero.xyz/c/x402-pdf-document-extraction-5142ae46/llms.txt): $0.015/call via x402. Fetches a PDF from a URL and extracts its text content, returning plain text or structured output using pypdf or OCR-based layout analysis.
- [X402 Site Map Discovery](https://www.zero.xyz/c/x402-site-map-discovery-cbfd4228/llms.txt): $0.004/call via x402. Fetches a URL and extracts its sitemap URLs, feed URLs, page URLs, and robots.txt metadata for web discovery.
- [X402 Browser Screenshot API](https://www.zero.xyz/c/x402-browser-screenshot-api-8d82bd6a/llms.txt): $0.01/call via x402. Captures a PNG screenshot of any URL using a headless browser, returning the image as base64-encoded data, with configurable viewport dimensions and page-load wait time.
- [X402 Quantitative Risk Snapshot](https://www.zero.xyz/c/x402-quantitative-risk-snapshot-cdd77acb/llms.txt): $0.01/call via x402. Returns a pay-per-request quantitative risk assessment for a financial instrument or portfolio, including risk label, risk score, drawdown, volatility, and return metrics.
- [X402 Quantitative Strategy Backtester](https://www.zero.xyz/c/x402-quantitative-strategy-backtester-35e09874/llms.txt): $0.02/call via x402. Runs a deterministic backtest of a quantitative trading strategy (e.g. SMA crossover) against provided price data and returns performance metrics like win rate, return, and drawdown.
- [X402 Web Extraction - Structured Field Extractor](https://www.zero.xyz/c/x402-web-extraction-structured-field-extractor-e04f82ab/llms.txt): $0.01/call via x402. Extracts structured data fields from a web page URL using CSS or XPath selectors, returning named field values as arrays of strings.
- [X402 Quantitative Technical Indicators](https://www.zero.xyz/c/x402-quantitative-technical-indicators-e2c7fc70/llms.txt): $0.005/call via x402. Computes quantitative technical indicators (RSI, momentum, moving averages, volatility, max drawdown) for a price series, pay-per-request via x402 micropayment.
- [X402 Web Inspect Endpoint](https://www.zero.xyz/c/x402-web-inspect-endpoint-087005f5/llms.txt): $0.004/call via x402. Fetches a URL via HTTP POST/PUT/PATCH and returns detailed response metadata including status code, headers, content hash, redirect count, and content size.
- [X402 Web Metadata Extractor](https://www.zero.xyz/c/x402-web-metadata-extractor-0ff18b8c/llms.txt): $0.002/call via x402. Fetches and returns structured metadata (title, language, JSON-LD, Open Graph, canonical URL) from a given web page URL via a pay-per-request API.
- [X402 Market Sentiment Analyzer](https://www.zero.xyz/c/x402-market-sentiment-analyzer-8a9c7fe0/llms.txt): $0.005/call via x402. Analyzes text to classify its market sentiment as positive, negative, or neutral with a confidence score, payable per-request via x402.
- [X402 Host Inspector](https://www.zero.xyz/c/x402-host-inspector-a6c88845/llms.txt): $0.005/call via x402. Inspects a target URL's DNS resolution, TLS certificate, and HTTP reachability in a single pay-per-request call.
- [X402 Feed Parser](https://www.zero.xyz/c/x402-feed-parser-d7c5091a/llms.txt): $0.002/call via x402. Parses a web feed URL (RSS/Atom) and returns structured feed metadata and entries, billed per-request via x402 micropayments.
- [X402 Agent Data Utility – Research Bundle](https://www.zero.xyz/c/x402-agent-data-utility-research-bundle-92bb8142/llms.txt): $0.025/call via x402. Fetches a research bundle for a given URL, returning structured page content, metadata, links, and markdown extraction in a single pay-per-request call.
- [X402 Web-to-Markdown Converter](https://www.zero.xyz/c/x402-web-to-markdown-converter-9a5ad33f/llms.txt): $0.004/call via x402. Fetches a web page and returns its content converted to Markdown format, billed per-request via the x402 micropayment protocol.
- [X402 Quantitative Strategy Search](https://www.zero.xyz/c/x402-quantitative-strategy-search-06b9d3df/llms.txt): $0.1/call via x402. Searches and evaluates quantitative trading strategy candidates using train/validation/test splits and returns ranked research results.
- [X402 Agent Data Utility – Web Links Extractor](https://www.zero.xyz/c/x402-agent-data-utility-web-links-extractor-7ad9819b/llms.txt): $0.002/call via x402. Extracts and returns hyperlinks found on a given web page, payable per-request via x402 micropayments.

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)