# AION Agent Assurance Gateway

> x402-paid read-only MCP/A2A/API endpoint verification and robots.txt-respecting web page reading, returning JSON.

Payment: x402 v2, scheme exact, USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base (eip155:8453), payTo 0xA61531A143d7708331d8A5c718793fD8ac708ea5.
An unpaid POST with a valid JSON body returns HTTP 402 with the payment requirements in the PAYMENT-REQUIRED header and in the JSON body (accepts); malformed input is rejected with 4xx before payment.

## Paid endpoints

- [Verify an MCP, A2A or API endpoint (read-only)](https://agents.aiserviceco.com/paid/verify): POST, $0.01 USDC. Body (application/json, schema aion.verify.input.v1): {"url":"https://vendor.example/mcp","protocol":"mcp"}. Returns aion.verify.v1 JSON. Search terms: mcp-verify, a2a-verify, endpoint-check, interop-test, agent-tools.
- [Read one public web page as JSON](https://agents.aiserviceco.com/paid/page-read): POST, $0.002 USDC. Body (application/json, schema aion.pageRead.input.v1): {"url":"https://example.com/"}. Returns aion.pageRead.v1 JSON. Search terms: read-web-page, web-read, fetch-url, web-extract, url-to-json.

## Machine-readable

- [x402 manifest](https://agents.aiserviceco.com/.well-known/x402)
- [OpenAPI 3.1](https://agents.aiserviceco.com/openapi.json)
- [Pricing](https://agents.aiserviceco.com/service-info): $0.01 USDC per verify, $0.002 USDC per page-read; JSON summary
- [MCP server](https://agents.aiserviceco.com/mcp): streamable HTTP, POST JSON-RPC, free informational tools
- [MCP server card](https://agents.aiserviceco.com/mcp/server-card)
- [A2A agent card](https://agents.aiserviceco.com/.well-known/agent-card.json)
- [A2A JSON-RPC endpoint](https://agents.aiserviceco.com/a2a): A2A 1.0 and 0.3
- [API catalog (RFC 9727)](https://agents.aiserviceco.com/.well-known/api-catalog)
- [AI catalog](https://agents.aiserviceco.com/.well-known/ai-catalog.json): experimental, draft spec

## Status

- [Offer states](https://agents.aiserviceco.com/service-info): verify PAYWALL_PUBLIC_SETTLEMENT_UNPROVEN; page-read PAYWALL_OWNER_TEST_SETTLED_ORGANIC_DEMAND_UNPROVEN.
- [Release status](https://agents.aiserviceco.com/service-info): production acceptance of this build is not asserted, and a historical review of 6f14c11d does not accept this candidate.
- [Settlement and demand](https://agents.aiserviceco.com/service-info): Page-read: one owner-funded test payment settled on Base; verify: settlement unproven; organic demand remains unproven; no independent-buyer acceptance, paid-use, or revenue claim.