# Services from x402.metastaz.org on Zero

> x402.metastaz.org serves 5 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.metastaz.org
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.metastaz.org/health.json

## Services

- [Turkey Workday Checker (Metastaz / Marshall x402)](https://www.zero.xyz/c/turkey-workday-checker-metastaz-marshall-x402-1ab78555/llms.txt): $0.005/call via x402. Returns whether a given date is a workday in Turkey, with sector-specific holiday rules and a fractional workday value for half-days.
- [Marshall x402 – Turkish IBAN Validator](https://www.zero.xyz/c/marshall-x402-turkish-iban-validator-0b79a9c3/llms.txt): $0.003/call via x402. Validates a Turkish IBAN string (TR-prefixed) by performing checksum and format checks, returning parsed components such as bank code, account number, and formatted IBAN.
- [Marshall x402 – Turkish Business Day Counter](https://www.zero.xyz/c/marshall-x402-turkish-business-day-counter-ca13e8c6/llms.txt): $0.005/call via x402. Counts the number of business days (including half-days) between two dates for Turkey, with options for private vs public sector and Saturday workday rules
- [Marshall x402 – Turkey Business Day Calculator (Add)](https://www.zero.xyz/c/marshall-x402-turkey-business-day-calculator-add-ce108bce/llms.txt): $0.005/call via x402. Calculates a future or past Turkish business date by adding or subtracting a number of working days from a start date, skipping Turkish public holidays and optionally treating Saturday as a workday.
- [Marshall x402 – Turkish Text Checker (Denetle)](https://www.zero.xyz/c/marshall-x402-turkish-text-checker-denetle-27aef6fe/llms.txt): $0.005/call via x402. Checks Turkish text for spelling, grammar, and style errors, returning findings with matched text, suggestions, and explanations in Turkish.

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)