Issue

Re-registering an existing server via the registration UI fails with:

{
  "success": true,
  "registered": 0,
  "failed": 4,
  "source": "openapi",
  "failedDetails": [
    { "url": "https://api.leoclaw.cc/analyze", "error": "No valid x402 response found", "status": null },
    { "url": "https://api.leoclaw.cc/product-id", "error": "No valid x402 response found", "status": null },
    { "url": "https://api.leoclaw.cc/ad-debunk", "error": "No valid x402 response found", "status": null },
    { "url": "https://api.leoclaw.cc/verify", "error": "No valid x402 response found", "status": null }
  ]
}

Context

• Server: https://api.leoclaw.cc
• The client-side preview (in the registration UI) correctly detects the server title, description, and all 4 resources before submission
• The server-side probe (from x402scan backend) gets status: null — the request itself fails, not a parsing issue
• All 4 endpoints return proper x402 v1 challenge responses ({x402Version: 1, error, accepts: [...]}) when probed externally
• /.well-known/x402 and /openapi.json are both live and correct
• The @agentcash/discovery CLI tool detects all 4 endpoints successfully

Root cause hypothesis

The server is behind a Cloudflare Tunnel. Cloudflare's Bot Fight Mode or automated request blocking may be returning a JS challenge page to x402scan's server-side HTTP client (which can't execute JavaScript), while browser-based requests succeed normally. status: null is consistent with a network-level block or non-parseable response.

Request

1. Could you expose the actual HTTP status + response body in failedDetails to help diagnose? Currently status: null gives no signal.
2. Is there a known list of x402scan scraper IPs or User-Agents that could be allowlisted on the server side?
3. Is re-registration the intended mechanism for updating server metadata (title/description), or is there another path?

Verification

Direct probe works fine:

curl -s -X POST https://api.leoclaw.cc/analyze \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com"}' | jq .x402Version
# → 1