Domain Fetch Verification

A new function tP3 has been added that checks whether a domain can be fetched before attempting web operations:

async function tP3(domain) {
  try {
    let response = await fetch(
      `https://claude.ai/api/web/domain_info?domain=${encodeURIComponent(domain)}`
    );
    if (response.ok) return (await response.json()).can_fetch === true;
    return false;
  } catch (error) {
    return (logError(error), true);
  }
}

This appears to be a pre-flight check for the WebFetch tool, allowing Claude Code to verify domain accessibility before attempting to fetch content.