Fastly — Forward AI traffic

Fastly does this in custom VCL. Add a recv snippet to your service.

VCL snippet

sub vcl_recv {
  #FASTLY recv

  if (req.http.User-Agent ~ "(?i)(ChatGPT-User|PerplexityBot|Perplexity-User|GPTBot|OAI-SearchBot|anthropic-ai|Claude-Web|ClaudeBot|Claude-User|Google-Extended|Gemini|Applebot-Extended|meta-externalagent|meta-externalfetcher|CCBot|cohere-ai|YouBot|Diffbot|Timpibot|Amazonbot|Bytespider)") {
    error 902 "ai-forward";
  }
}

sub vcl_error {
  if (obj.status == 902) {
    set obj.status = 302;
    set obj.response = "Found";
    set obj.http.Location = "https://oasy.<your-domain>";
    set obj.http.Cache-Control = "no-store";
    synthetic "";
    return (deliver);
  }
}

Replace <your-domain> with your domain. Save, then Activate the
new version.

Verify

Back on the MCP page, click Check forwarding.

Test yourself

curl -I -A "GPTBot/1.2" https://your-domain.com/
# → HTTP/2 302
# → location: https://oasy.your-domain.com

Notes

We use the error 902 → vcl_error pattern so the redirect happens before
cache lookup. No bot request ever touches your origin.
If you want to log these for auditing, add set req.http.X-AI-Bot = "1";
inside the if and tee it into your existing access log line item.
Compute@Edge (the JS-based replacement) does the same thing in ~10 lines
of JS — happy to provide a sample if you'd rather, ping us.