dev.x402check/mcp

up checked 2026-11-11T04:38:12.284Z

Unclaimed · Unverified

Publisher-provided description

Preflight before paying any x402 tool (ok|caution|avoid + history). 1 free/wallet; then $0.01 Base.

Summary by lookupd

Pre-checks x402 paid tool endpoints for trust, price, and payee changes before an agent pays, and can watch them over time.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http mcp https://x402check.dev/mcp

Claude Code, npm package (stdio)

claude mcp add mcp -- npx -y x402check-mcp

Codex, remote (streamable-http)

codex mcp add mcp --url https://x402check.dev/mcp

Codex, npm package (stdio)

codex mcp add mcp -- npx -y x402check-mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://x402check.dev/mcp"
    }
  }
}

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402check-mcp"
      ]
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Publisher-provided text

preflight_check Preflight an x402 seller URL before settle / PAYMENT-SIGNATURE. Pass the absolute https seller URL. Returns verdict ok|caution|avoid plus that tool's history on
verify_payto Verify the payTo / receiving wallet an x402 seller demands before you sign. Same check as preflight_check: live 402 probe + history.payToChanges (wallet rotatio
preflight_batch Trust-check up to 25 x402 seller URLs in one request. Charged per URL (N × unit) in a single Exact settlement via MCP _meta payment. Prefer when comparing candi
compare_tools Compare several x402 tools before choosing which to pay. Alias of preflight_batch: returns each URL's verdict, priceUsd, payTo, uptimePct, and drift history so
deep_check Deeper trust check before paying an x402 endpoint ($0.05 Exact USDC). Runs the same live 402 + history as preflight_check, then repeated probes for payTo/price
watch_tool Subscribe to daily re-checks of one x402 seller URL for 30 days. Alerts your webhook and/or email when payTo, price, network, or availability changes. Fixed $5

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/dev.x402check/mcp.svg)](https://lookupd.com/servers/dev.x402check/mcp)