Man pages matching name http::cookiemonster in section 3pm:

HTTP::CookieMonster.3pm.en	debian 10 / libhttp-cookiemonster-perl
HTTP::CookieMonster.3pm.en	debian 11 / libhttp-cookiemonster-perl
HTTP::CookieMonster.3pm.en	debian 12 / libhttp-cookiemonster-perl