# Machine-Payable Deterministic APIs

## Cross-Border Business Date
Paid endpoint: https://taskgate.13-204-198-31.sslip.io/v1/cross-border-business-date
Method: GET or POST
Price: $0.001 USDC on Base (eip155:8453) via x402 v2
GET query: startDate=2026-12-23&businessDays=3&calendars=US-NY,GB-ENG&includeStart=false
Description: Add signed business days across one to five country/subdivision holiday calendars. A date counts only when every requested calendar is open. Returns result, counted dates, and skipped weekend/holiday reasons.
Free example: https://taskgate.13-204-198-31.sslip.io/v1/cross-border-business-date/example

## Crypto Task Viability Gate
Paid endpoint: https://taskgate.13-204-198-31.sslip.io/v1/crypto-task-gate
Method: GET
Price: $0.001 USDC on Base (eip155:8453) via x402 v2
Description: Conservative public-source snapshot of crypto task marketplaces with source health, observed rewards, deadlines, payment states, gate reasons and zero-spend policy.
Free preview: https://taskgate.13-204-198-31.sslip.io/preview

OpenAPI: https://taskgate.13-204-198-31.sslip.io/openapi.json
Health: https://taskgate.13-204-198-31.sslip.io/health