# Services from coinslot.dev on Zero

> coinslot.dev serves 13 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/coinslot.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/coinslot.dev/health.json

## Services

- [Coinslot Identifier Validator](https://www.zero.xyz/c/coinslot-identifier-validator-7a28d3d8/llms.txt): $0.003/call via x402. Validates identifiers using real checksum algorithms: credit cards (Luhn + brand detection), IBANs (mod-97), EAN-13/UPC-A barcodes, ISBN-10/13, and UUIDs (with version detection)
- [Coinslot Read Page](https://www.zero.xyz/c/coinslot-read-page-8e3f9850/llms.txt): $0.005/call via x402. Fetches a public URL and returns its content as clean Markdown along with the page title and metadata in a single API call.
- [Coinslot Cron Expression Parser](https://www.zero.xyz/c/coinslot-cron-expression-parser-5598c9e1/llms.txt): $0.002/call via x402. Parses a 5-field cron expression into a plain-English explanation and returns the next N scheduled run times in UTC.
- [Coinslot Feed-to-JSON](https://www.zero.xyz/c/coinslot-feed-to-json-3365430b/llms.txt): $0.004/call via x402. Parses RSS 2.0 or Atom feed XML (or fetches from a URL) into clean JSON with title, items, links, dates, and HTML-stripped summaries
- [Coinslot Email Verifier](https://www.zero.xyz/c/coinslot-email-verifier-a0d9128f/llms.txt): $0.003/call via x402. Validates one or more email addresses by checking RFC syntax, live MX DNS records via DNS-over-HTTPS, and disposable-domain screening
- [Coinslot Text Diff](https://www.zero.xyz/c/coinslot-text-diff-6f0f4c6e/llms.txt): $0.002/call via x402. Computes a unified line-based diff of two text strings, returning the unified diff output plus structured change statistics (added/removed/unchanged line counts and hunks).
- [Coinslot Extract](https://www.zero.xyz/c/coinslot-extract-535fba7a/llms.txt): $0.003/call via x402. Extracts structured, deduplicated entities (emails, URLs, IPv4/IPv6, phone numbers, dates) from raw text with occurrence counts
- [Coinslot QR Code Generator](https://www.zero.xyz/c/coinslot-qr-code-generator-63af0e90/llms.txt): $0.005/call via x402. Generates a QR code as a standalone SVG from input text, with configurable error correction level, margin, and dark/light colors.
- [Coinslot JSON↔CSV Converter](https://www.zero.xyz/c/coinslot-json-csv-converter-af768c2c/llms.txt): $0.002/call via x402. Converts an array of JSON objects to CSV (with nested keys flattened to dot-path column headers) or converts a CSV string back to an array of JSON objects.
- [Coinslot HTML-to-Markdown Converter](https://www.zero.xyz/c/coinslot-html-to-markdown-converter-72779812/llms.txt): $0.005/call via x402. Converts HTML documents or fragments into clean, structured Markdown, stripping scripts, styles, and comments.
- [Coinslot JSON Schema Validator](https://www.zero.xyz/c/coinslot-json-schema-validator-92cfc4fc/llms.txt): $0.003/call via x402. Validates a JSON document against a JSON Schema (draft-07 core subset) and returns all violations with their paths
- [Coinslot Timezone Converter](https://www.zero.xyz/c/coinslot-timezone-converter-08767c78/llms.txt): $0.002/call via x402. Convert a timestamp between up to 20 IANA timezones, returning local times, UTC offsets, weekday, and hour-of-day per zone with correct DST handling.
- [Coinslot Markdown to HTML Converter](https://www.zero.xyz/c/coinslot-markdown-to-html-converter-0ba72751/llms.txt): $0.003/call via x402. Converts GitHub-flavored Markdown (tables, fenced code, task lists) to clean HTML with raw inline HTML stripped

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

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