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x402 endpoint checker

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

MCP server · by x402-seller-kit.soloearn.workers.dev

About

x402 endpoint checker is an MCP server published by x402-seller-kit.soloearn.workers.dev. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-25.

What it asks for

  • Runs remotely

None of the marketplaces we read publishes its tools or the settings it asks for.

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

A one-click link opens the client, which asks you to confirm before it adds the server.

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a remote MCP server

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --transport http x402-checker https://x402-seller-kit.soloearn.workers.dev/mcp
Codex~/.codex/config.toml
[mcp_servers.x402-checker]
url = "https://x402-seller-kit.soloearn.workers.dev/mcp"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "x402-checker": {
      "url": "https://x402-seller-kit.soloearn.workers.dev/mcp"
    }
  }
}

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 1.0.0 No figure published Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

Nothing has moved on this plugin since we started watching it.

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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

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