# Services from port-402-production.up.railway.app on Zero

> port-402-production.up.railway.app serves 6 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/port-402-production.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/port-402-production.up.railway.app/health.json

## Services

- [Port 402 Memory Read](https://www.zero.xyz/c/port-402-memory-read-f7223c8a/llms.txt): $0.001/call via x402. Retrieves a stored value from a persistent key-value memory store for an AI agent, paid per-call via x402 micropayment.
- [Port 402 Agent Inbox Reader](https://www.zero.xyz/c/port-402-agent-inbox-reader-10aaa442/llms.txt): $0.001/call via x402. Reads an agent's persistent inbox (oldest-first, up to 50 messages), optionally acknowledging and removing messages after reading; also surfaces due reminders.
- [Port 402 Reminder Scheduler](https://www.zero.xyz/c/port-402-reminder-scheduler-031668dc/llms.txt): $0.001/call via x402. Schedule a delayed message for an AI agent that delivers to its inbox and optionally POSTs to a webhook when due
- [Port 402 Memory Export](https://www.zero.xyz/c/port-402-memory-export-ea50ac71/llms.txt): $0.002/call via x402. Exports the entire persistent memory store for a wallet-identified agent as a single signed, integrity-verified JSON document.
- [Port 402 Memory Key Lister](https://www.zero.xyz/c/port-402-memory-key-lister-0e0c5d4b/llms.txt): $0.001/call via x402. Lists all keys stored in the calling agent's persistent memory namespace, identified by its paying wallet address.
- [Port 402 Memory Read](https://www.zero.xyz/c/port-402-memory-read-f6e2f619/llms.txt): $0.001/call via x402. Retrieves a stored value from an agent's persistent key-value memory store by key name.

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)