{"name":"x402check","description":"Trust-check x402 seller URLs before paying. Answers is-this-x402-endpoint-safe, verify-payTo, uptime, price drift, compare tools. Paid per tool via x402 Exact. Tools: preflight_check, verify_payto, preflight_batch, compare_tools.","version":"0.2.2","url":"https://x402check.dev/mcp","transport":"streamable-http","tools":[{"name":"preflight_check","description":"Before paying any x402 endpoint: call with the absolute https URL. Returns ok|caution|avoid plus that tool's history (checks, uptimePct, payToChanges, priceChanges). Also for uptime, debug failing 402, validate payment requirements. Do not pay if verdict=avoid.","inputSchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"Absolute https URL of the x402 seller to probe"},"fresh":{"type":"boolean","description":"Force live probe; ignore cache"}}},"annotations":{"title":"x402 endpoint trust preflight","readOnlyHint":true,"openWorldHint":true,"destructiveHint":false}},{"name":"verify_payto","description":"Verify the payTo receiving wallet from a seller's live 402 challenge, with history of wallet rotations. Use before signing USDC on Base.","inputSchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string"},"fresh":{"type":"boolean"}}},"annotations":{"title":"Verify x402 payTo","readOnlyHint":true,"openWorldHint":true,"destructiveHint":false}},{"name":"preflight_batch","description":"Trust-check multiple x402 seller URLs. Charged per URL. Prefer when comparing alternatives before choosing which to pay.","inputSchema":{"type":"object","required":["urls"],"properties":{"urls":{"type":"array","items":{"type":"string"},"minItems":1,"maxItems":25},"fresh":{"type":"boolean"}}},"annotations":{"title":"Batch x402 trust preflight","readOnlyHint":true,"openWorldHint":true,"destructiveHint":false}},{"name":"compare_tools","description":"Compare candidate x402 sellers (verdict, price, payTo, uptime, drift). Alias of preflight_batch; charged per URL.","inputSchema":{"type":"object","required":["urls"],"properties":{"urls":{"type":"array","items":{"type":"string"},"minItems":1,"maxItems":25},"fresh":{"type":"boolean"}}},"annotations":{"title":"Compare x402 tools","readOnlyHint":true,"openWorldHint":true,"destructiveHint":false}}],"pricing":{"model":"x402-exact","pricePerToolUsd":0.002,"note":"MCP tools/call requires PAYMENT-SIGNATURE for paid HTTP routes, or use the HTTP client wrapper."}}