# Services from a2apay.io on Zero

> a2apay.io serves 3 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/a2apay.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/a2apay.io/health.json

## Services

- [a2apay Agent Memory](https://www.zero.xyz/c/a2apay-agent-memory-9881145d/llms.txt): $0.028/call via x402. Stores persistent key-value memory for AI agents on-chain via ICP infrastructure, with pay-per-write pricing.
- [a2apay Task Memory Resume](https://www.zero.xyz/c/a2apay-task-memory-resume-3aeb79d5/llms.txt): $0.014/call via x402. Reads back the latest version of all keys stored under a given agent task ID from persistent agent memory, supporting both self-written and explicitly granted external keys.
- [a2apay Agent Query](https://www.zero.xyz/c/a2apay-agent-query-141ea53f/llms.txt): $0.028/call via x402. Submits a natural-language prompt to an AI agent service backed by ICP canisters and returns a response, charged per-query with no account required.

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)