# Services from cheap-utilities.x402tookit.com on Zero

> cheap-utilities.x402tookit.com serves 12 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/cheap-utilities.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/cheap-utilities.x402tookit.com/health.json

## Services

- [Cheap Utilities Color Contrast Checker](https://www.zero.xyz/c/cheap-utilities-color-contrast-checker-36a477af/llms.txt): $0.02/call via x402. Calculates the WCAG contrast ratio between two hex colors and returns AA/AAA pass/fail verdicts for normal text, large text, and UI components.
- [Cheap Utilities Semver Compare](https://www.zero.xyz/c/cheap-utilities-semver-compare-9d6c9933/llms.txt): $0.02/call via x402. Compare two semantic version strings by precedence and/or test whether a version satisfies a semver range expression like ^1.2.0 or >=2 <3.
- [Cheap Utilities Hash Text](https://www.zero.xyz/c/cheap-utilities-hash-text-c2d97a57/llms.txt): $0.02/call via x402. Computes SHA-256, SHA-1, SHA-512, and MD5 digests of a short text string, returning hex and base64 encodings along with byte length and base64 of the input.
- [Cheap Utilities Cron Expression Explainer](https://www.zero.xyz/c/cheap-utilities-cron-expression-explainer-8641b2e6/llms.txt): $0.02/call via x402. Translates a 5-field cron expression into plain English and returns the next 5 scheduled run times in UTC.
- [Cheap Utilities UUID Inspector](https://www.zero.xyz/c/cheap-utilities-uuid-inspector-595c2dfe/llms.txt): $0.02/call via x402. Validates a UUID and returns its version (1–8), variant, and embedded timestamp for v1, v6, and v7 UUIDs
- [Cheap Utilities JSON Repair](https://www.zero.xyz/c/cheap-utilities-json-repair-805e27ba/llms.txt): $0.02/call via x402. Repairs malformed JSON (trailing commas, single quotes, bare keys, comments, Python literals, missing brackets) and returns the parsed result
- [Cheap Utilities URL Normalizer](https://www.zero.xyz/c/cheap-utilities-url-normalizer-84c796d4/llms.txt): $0.02/call via x402. Normalizes a URL by lowercasing the host, removing default ports and fragments, sorting query parameters, and stripping known tracking parameters.
- [Cheap Utilities Text Statistics](https://www.zero.xyz/c/cheap-utilities-text-statistics-12b6a947/llms.txt): $0.02/call via x402. Analyzes English text and returns word count, sentence count, character count, reading time, Flesch readability scores, top words, and a difficulty verdict.
- [Cheap Utilities Email Syntax Validator](https://www.zero.xyz/c/cheap-utilities-email-syntax-validator-5be635ab/llms.txt): $0.02/call via x402. Validates email address syntax, detects role accounts (info@, admin@), and identifies known throwaway/disposable domains — no DNS lookup or message sending involved.
- [Cheap Utilities JSON Diff](https://www.zero.xyz/c/cheap-utilities-json-diff-40304839/llms.txt): $0.02/call via x402. Computes a structural diff of two JSON documents, reporting added, removed, changed, and type-changed paths with array comparison by index.
- [Cheap Utilities IP Classifier](https://www.zero.xyz/c/cheap-utilities-ip-classifier-55dc3c34/llms.txt): $0.02/call via x402. Classifies an IPv4 or IPv6 address as public, private, loopback, link-local, CGNAT, or reserved, and returns its reverse-DNS hostname.
- [Cheap Utilities Timestamp Converter](https://www.zero.xyz/c/cheap-utilities-timestamp-converter-3f57722c/llms.txt): $0.02/call via x402. Converts a Unix timestamp or ISO datetime string into multiple representations: ISO 8601, local time in any IANA timezone, weekday, ISO week number, and relative time.

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)