Query x402 protocol wallet transactions, merchant stats, and resource registry via micropayment-gated API.
What it does
x402scan is a payment data explorer and registry for the x402 protocol, built by Merit Systems. It indexes USDC transfers on Base and Solana that flow through x402-enabled endpoints, and exposes that data through a suite of REST API endpoints gated by x402 micropayments ($0.01–$0.02 per call).
This specific endpoint — `/api/x402/wallets/{address}/transactions` — returns a paginated list of x402 transfers where the specified wallet address is the sender. Results can be filtered by chain (Base or Solana), timeframe (1, 7, 14, or 30 days), and sorted by time or amount in ascending or descending order. Pagination supports up to 100 items per page. The endpoint costs $0.01 per request, paid via the x402 protocol.
The broader x402scan API also offers endpoints for merchant transaction history, wallet and merchant aggregate stats, facilitator analytics, a full-text resource search, and a resource registry where developers can register their own x402-protected endpoints. A send endpoint allows programmatic USDC transfers on Base or Solana with dynamic pricing. Registry write operations use SIWX (Sign-In With X) wallet authentication rather than micropayments.
Capabilities
Use cases
- —Retrieve outbound USDC transfer history for a specific wallet address on Base or Solana
- —Monitor agent spending patterns across x402-enabled services
- —Build dashboards tracking x402 ecosystem payment flows
- —Audit wallet activity over configurable timeframes (1–30 days)
- —Integrate x402 transaction data into accounting or analytics pipelines
Fit
Best for
- —Developers building on the x402 protocol who need transaction visibility
- —AI agents that need to audit their own spending history
- —Analytics platforms tracking the x402 micropayment ecosystem
Not for
- —General-purpose blockchain explorers (only indexes x402 USDC transfers, not all on-chain activity)
- —Users needing free API access (every data call requires a $0.01 x402 micropayment)
- —Non-USDC token transfer lookups
Quick start
curl -H "X-Payment: <x402_payment_header>" \
"https://www.x402scan.com/api/x402/wallets/0x6af92112b3f74BfC6e191a3a036908db13843883/transactions?page=0&page_size=10&chain=base&sort_by=time&sort_order=desc"Example
Request
{
"url": "https://www.x402scan.com/api/x402/wallets/0x6af92112b3f74BfC6e191a3a036908db13843883/transactions?page=0&page_size=10&chain=base&timeframe=7&sort_by=time&sort_order=desc",
"method": "GET",
"headers": {
"X-Payment": "<x402_payment_token>"
}
}Endpoint
Quality
The OpenAPI spec is thorough with clear parameter definitions and pricing info, but the specific endpoint URL probed returned 404 (likely because the path uses /api/data/wallets/ instead of the documented /api/x402/wallets/). No response schema examples are available, and no dedicated docs page exists. The broader API is well-documented via OpenAPI guidance.
Warnings
- —The probed URL path (/api/data/wallets/...) returned 404; the correct documented path appears to be /api/x402/wallets/{address}/transactions — the Bazaar record URL may be stale or incorrect.
- —No response body schema is defined in the OpenAPI spec — only '200: Successful response' without structure details.
- —No dedicated documentation page exists (x402scan.com/docs returns 404).
Citations
- —x402scan is a payment data explorer and registry for the x402 protocol, built by Merit Systemshttps://www.x402scan.com
- —Data endpoints cost $0.01–$0.02 per call via x402 micropaymenthttps://www.x402scan.com
- —Wallet transactions endpoint returns paginated transfers where wallet is sender, filterable by chain, timeframe, sortable by time or amounthttps://www.x402scan.com
- —Supports Base and Solana chainshttps://www.x402scan.com
- —Registry write endpoints use SIWX wallet authenticationhttps://www.x402scan.com
- —The probed endpoint at /api/data/wallets/.../transactions returned 404 on both POST and GEThttps://www.x402scan.com/api/data/wallets/0x6af92112b3f74BfC6e191a3a036908db13843883/transactions