x402 endpoint checker

by FastDrop

MCP MCP VERIFIED Verified 3 days ago Registry import free

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS. Official MCP Registry: dev.workers.soloearn.x402-seller-kit/x402-checker@1.0.0. Remote endpoint: https://x402-seller-kit.soloearn.workers.dev/mcp

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Remote MCP endpoint ingested from the official registry and probed by FastDrop.

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as dev.workers.soloearn.x402-seller-kit/x402-checker and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.

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Tools this endpoint exposes

Read directly from the endpoint on 8 Oct 2026. Not supplied by the maker.

check_x402_endpoint
Fetch a paid URL without paying and grade its x402 402 challenge: status, PAYMENT-REQUIRED header, version, network, USDC asset, amount units, payTo checksum, EIP-712 domain, CORS, HEAD parity and dis