diff --git a/legacy/src/services/searxng-client.ts b/legacy/src/services/searxng-client.ts
index 315fff67..4b5d3b65 100644
--- a/legacy/src/services/searxng-client.ts
+++ b/legacy/src/services/searxng-client.ts
@@ -3,10 +3,217 @@ import defaultKy, { type KyInstance } from 'ky'
 import { assert, getEnv, omit, pick, pruneUndefined } from '../utils.js'
 
 export namespace searxng {
+  export type SearchCategory =
+    | 'general'
+    | 'images'
+    | 'videos'
+    | 'news'
+    | 'map'
+    | 'music'
+    | 'it'
+    | 'science'
+    | 'files'
+    | 'social media'
+
+  export type SearchEngine =
+    | '9gag'
+    | 'annas archive'
+    | 'apk mirror'
+    | 'apple app store'
+    | 'ahmia'
+    | 'anaconda'
+    | 'arch linux wiki'
+    | 'artic'
+    | 'arxiv'
+    | 'ask'
+    | 'bandcamp'
+    | 'wikipedia'
+    | 'bilibili'
+    | 'bing'
+    | 'bing images'
+    | 'bing news'
+    | 'bing videos'
+    | 'bitbucket'
+    | 'bpb'
+    | 'btdigg'
+    | 'ccc-tv'
+    | 'openverse'
+    | 'chefkoch'
+    | 'crossref'
+    | 'crowdview'
+    | 'yep'
+    | 'yep images'
+    | 'yep news'
+    | 'curlie'
+    | 'currency'
+    | 'bahnhof'
+    | 'deezer'
+    | 'destatis'
+    | 'deviantart'
+    | 'ddg definitions'
+    | 'docker hub'
+    | 'erowid'
+    | 'wikidata'
+    | 'duckduckgo'
+    | 'duckduckgo images'
+    | 'duckduckgo videos'
+    | 'duckduckgo news'
+    | 'duckduckgo weather'
+    | 'apple maps'
+    | 'emojipedia'
+    | 'tineye'
+    | 'etymonline'
+    | '1x'
+    | 'fdroid'
+    | 'flickr'
+    | 'free software directory'
+    | 'frinkiac'
+    | 'fyyd'
+    | 'genius'
+    | 'gentoo'
+    | 'gitlab'
+    | 'github'
+    | 'codeberg'
+    | 'goodreads'
+    | 'google'
+    | 'google images'
+    | 'google news'
+    | 'google videos'
+    | 'google scholar'
+    | 'google play apps'
+    | 'google play movies'
+    | 'material icons'
+    | 'gpodder'
+    | 'habrahabr'
+    | 'hackernews'
+    | 'hoogle'
+    | 'imdb'
+    | 'imgur'
+    | 'ina'
+    | 'invidious'
+    | 'jisho'
+    | 'kickass'
+    | 'lemmy communities'
+    | 'lemmy users'
+    | 'lemmy posts'
+    | 'lemmy comments'
+    | 'library genesis'
+    | 'z-library'
+    | 'library of congress'
+    | 'lingva'
+    | 'lobste.rs'
+    | 'mastodon users'
+    | 'mastodon hashtags'
+    | 'mdn'
+    | 'metacpan'
+    | 'mixcloud'
+    | 'mozhi'
+    | 'mwmbl'
+    | 'npm'
+    | 'nyaa'
+    | 'mankier'
+    | 'odysee'
+    | 'openairedatasets'
+    | 'openairepublications'
+    | 'openstreetmap'
+    | 'openrepos'
+    | 'packagist'
+    | 'pdbe'
+    | 'photon'
+    | 'pinterest'
+    | 'piped'
+    | 'piped.music'
+    | 'piratebay'
+    | 'podcastindex'
+    | 'presearch'
+    | 'presearch images'
+    | 'presearch videos'
+    | 'presearch news'
+    | 'pub.dev'
+    | 'pubmed'
+    | 'pypi'
+    | 'qwant'
+    | 'qwant news'
+    | 'qwant images'
+    | 'qwant videos'
+    | 'radio browser'
+    | 'reddit'
+    | 'rottentomatoes'
+    | 'sepiasearch'
+    | 'soundcloud'
+    | 'stackoverflow'
+    | 'askubuntu'
+    | 'internetarchivescholar'
+    | 'superuser'
+    | 'searchcode code'
+    | 'semantic scholar'
+    | 'startpage'
+    | 'tokyotoshokan'
+    | 'solidtorrents'
+    | 'tagesschau'
+    | 'tmdb'
+    | 'torch'
+    | 'unsplash'
+    | 'yandex music'
+    | 'yahoo'
+    | 'yahoo news'
+    | 'youtube'
+    | 'dailymotion'
+    | 'vimeo'
+    | 'wiby'
+    | 'alexandria'
+    | 'wikibooks'
+    | 'wikinews'
+    | 'wikiquote'
+    | 'wikisource'
+    | 'wikispecies'
+    | 'wiktionary'
+    | 'wikiversity'
+    | 'wikivoyage'
+    | 'wikicommons.images'
+    | 'wolframalpha'
+    | 'dictzone'
+    | 'mymemory translated'
+    | '1337x'
+    | 'duden'
+    | 'seznam'
+    | 'mojeek'
+    | 'moviepilot'
+    | 'naver'
+    | 'rubygems'
+    | 'peertube'
+    | 'mediathekviewweb'
+    | 'yacy'
+    | 'yacy images'
+    | 'rumble'
+    | 'livespace'
+    | 'wordnik'
+    | 'woxikon.de synonyme'
+    | 'seekr news'
+    | 'seekr images'
+    | 'seekr videos'
+    | 'sjp.pwn'
+    | 'stract'
+    | 'svgrepo'
+    | 'tootfinder'
+    | 'wallhaven'
+    | 'wikimini'
+    | 'wttr.in'
+    | 'yummly'
+    | 'brave'
+    | 'brave.images'
+    | 'brave.videos'
+    | 'brave.news'
+    | 'lib.rs'
+    | 'sourcehut'
+    | 'goo'
+    | 'bt4g'
+    | 'pkg.go.dev'
+
   export interface SearchOptions {
     query: string
-    categories?: string[]
-    engines?: string[]
+    categories?: SearchCategory[]
+    engines?: SearchEngine[]
     language?: string
     pageno?: number
   }