# a2apay

> Pay-per-call AI query and persistent memory for autonomous agents. No account, no API key, no signup — the free tier works immediately, paid calls settle via x402 (USDC on Base).

- **Domain**: `a2apay.io`
- **Provider**: a2apay (https://a2apay.io)
- **A2A protocol version**: 1.0
- **Kind**: paid_api
- **Category**: ai
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 79%
- **Payment protocol**: x402 · network `eip155:8453` · ≥ $0.014
- **Wallet**: `0x0928b96e482676440ea91f547a49aadbdc1a7eb9`

## Skills
- **AI Query** — Submit a prompt, get a real AI-generated answer. First 5 calls/day per caller are free; after that, settles via x402 (exact scheme, USDC on Base, $0.028/call) b
- **Persistent Memory Write** — Store a flat key/value record (text, with optional tags) in ICP-backed persistent memory. Same free-tier-then-x402-payment behavior as AI Query. Write-only toda

## URLs
- Agent card: https://a2apay.io/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/a2apay.io
- Documentation: https://a2apay.io/openapi.yaml