{"kind":"doc","doc":{"title":"Buddydex","section":{"slug":"experiments","name":"Experiments"},"rkey":"1789660275000-buddydex","cid":"bafkreif5c7xfxbgxe2hcdefqszni7jk7pe2jckw66y7yrzyjjpyyn7e6jq","renderKey":"bafkreif5c7xfxbgxe2hcdefqszni7jk7pe2jckw66y7yrzyjjpyyn7e6jq@2026-09-20T05:15:21Z@2026-09-20T05:15:21Z@Experiments|Open source projects and experiments","href":"/experiments/1789660275000-buddydex","publishedAt":"2026-09-20T05:15:21Z","updatedAt":"2026-09-20T05:15:21Z","tags":["claude-code","hashing","brute-force","easter-egg","deterministic-generation","reverse-engineering"],"description":"BuddyDex brute-forces the deterministic hashing pipeline behind Claude Code's short-lived April Fools' buddies, finding account ids that produce a desired species, rarity, stats, or shiny status.","readingMinutes":1,"markdown":"![](blob://bafkreiaghtpei6oudr2froeg24hkjaw5gpaah667m5kely5l6yhwiv6fxi)\n\n[REPO](https://github.com/iammatthias/buddydex) [NPM](https://www.npmjs.com/package/buddydex) [PROJECT](https://buddydex.fun)\n\nGotta hash them all. Claude Code buddies were released as an easter egg on April 1, 2026. They were removed shortly after. \\\n\\\nBuddies generated deterministically. Species, rarity, stats, and shiny status all derive from a hash of your account id, and re-roll every launch. BuddyDex brute-forces that pipeline to find the ids that produce the buddy you want.\n\nMore information about the project is available [here](https://iammatthias.com/posts/1775137360175-i-got-a-common-turtle).","media":{"bafkreiaghtpei6oudr2froeg24hkjaw5gpaah667m5kely5l6yhwiv6fxi":{"mime":"image/png","width":586,"height":818,"dominantColor":"#383940","blurhash":"L99G{%%M4mE100RP_3x]-.ofIUM|","thumbCid":null}},"series":{},"related":[{"title":"I Got a Common Turtle","href":"/posts/1775137360175-i-got-a-common-turtle","section":"posts","description":"I got a Common turtle from Claude Code's deterministic buddy system, so I brute-forced the generation algorithm.","publishedAt":"2026-04-02T06:42:00Z"},{"title":"Build your own apps","href":"/posts/1791570998502-build-your-own-apps","section":"posts","description":"The apps can be just for you.","publishedAt":"2026-10-30T01:52:18Z"},{"title":"Styx","href":"/experiments/1789407119000-styx","section":"experiments","description":"Styx is a library of eight agent souls plus a toolbox of skills for Hermes, Claude Code, or any LLM that takes a system prompt. It installs into ~/.hermes/styx or souls can be pasted into another runtime.","publishedAt":"2026-09-20T05:09:57Z"},{"title":"Phosphene","href":"/art/1781816428977-phosphene","section":"art","description":"A camera that turns each photo into a poem, then paints a new image from those words.","publishedAt":"2026-06-18T21:00:28Z"},{"title":"Apron","href":"/experiments/1793375787000-apron","section":"experiments","description":"Putting on an Apron.","publishedAt":"2026-10-30T16:12:05Z"},{"title":"Farfield Theme","href":"/experiments/1793193667000-farfield-theme","section":"experiments","description":"A dark and a light colour theme for terminals and editors. ff-night is the dark one, ff-day is the light one.","publishedAt":"2026-10-29T02:10:05Z"}],"prev":{"title":"AtProto","href":"/experiments/1789491418000-atproto"},"next":{"title":"Now Playing","href":"/experiments/1789660555000-now-playing"}}}