nginx — Forward AI traffic

Config

In your http {} block (or a snippet included from it):

map $http_user_agent $is_ai_bot {
  default                                         0;
  "~*ChatGPT-User"                                1;
  "~*PerplexityBot"                               1;
  "~*Perplexity-User"                             1;
  "~*GPTBot"                                      1;
  "~*OAI-SearchBot"                               1;
  "~*anthropic-ai"                                1;
  "~*Claude-Web"                                  1;
  "~*ClaudeBot"                                   1;
  "~*Claude-User"                                 1;
  "~*Google-Extended"                             1;
  "~*Gemini"                                      1;
  "~*Applebot-Extended"                           1;
  "~*meta-externalagent"                          1;
  "~*meta-externalfetcher"                        1;
  "~*CCBot"                                       1;
  "~*cohere-ai"                                   1;
  "~*YouBot"                                      1;
  "~*Diffbot"                                     1;
  "~*Timpibot"                                    1;
  "~*Amazonbot"                                   1;
  "~*Bytespider"                                  1;
}

In your server {} block:

if ($is_ai_bot) {
  return 302 https://oasy.<your-domain>;
}

Replace <your-domain>. Reload:

sudo nginx -t && sudo systemctl reload nginx

Verify

Back on the MCP page, click Check forwarding.

Test yourself

curl -I -A "ClaudeBot/1.0" https://your-domain.com/
# → HTTP/2 302
# → location: https://oasy.your-domain.com

Notes

if inside server {} has nginx caveats but is safe for a simple
return — see nginx's "if is evil" doc; the listed exceptions cover this.
For OpenResty / Lua-aware setups, prefer doing the match in Lua to avoid
the if block entirely.
The map runs once per request and is cheap.