# Services from margin-api-production-d413.up.railway.app on Zero

> margin-api-production-d413.up.railway.app serves 2 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/margin-api-production-d413.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/margin-api-production-d413.up.railway.app/health.json

## Services

- [Margin Sufficiency Check](https://www.zero.xyz/c/margin-sufficiency-check-64aad6cd/llms.txt): $0.01/call via x402. Checks whether the currently posted margin is sufficient for a given position or collateral requirement
- [Margin Requirement Calculator](https://www.zero.xyz/c/margin-requirement-calculator-a44acbd1/llms.txt): $0.01/call via x402. Calculates the required margin amount for a given collateral position

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)