# Services from subpay.ai on Zero

> subpay.ai serves 4 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/subpay.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/subpay.ai/health.json

## Services

- [Subpay Invoice & Receipt Parser with Arithmetic Validation](https://www.zero.xyz/c/subpay-invoice-receipt-parser-with-arithmetic-validation-7e473123/llms.txt): $0.04/call via x402. Extracts structured JSON data from invoice, bill, or receipt PDFs (vendor, customer, line items, taxes, totals) and validates the arithmetic across all figures
- [subpay.ai Invoice OCR & Arithmetic Checker](https://www.zero.xyz/c/subpay-ai-invoice-ocr-arithmetic-checker-438fcb17/llms.txt): $0.04/call via x402. Parses invoice, bill, or receipt PDFs into structured JSON and validates the arithmetic across all line items, taxes, and totals
- [SubPay AI – Construction Pay Application Parser](https://www.zero.xyz/c/subpay-ai-construction-pay-application-parser-ef4c2748/llms.txt): $0.04/call via x402. Reads AIA G702/G703, Procore, Textura, or change order PDFs and returns structured financial figures with arithmetic validation.
- [subpay.ai Construction Pay Application Extractor](https://www.zero.xyz/c/subpay-ai-construction-pay-application-extractor-ca290bd3/llms.txt): $0.2/call via x402. Parses AIA G702/G703, Procore, Textura, or change order PDFs into structured financial figures with arithmetic validation

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)