# Bittgenstein > Curated intelligence: finished instruments that write, read, see, draw, move and search, reachable with one key. - There is no public sign-up yet; keys are given out personally. - Key holders: the full technical reference is at https://bittgenstein.com/private/llms.txt (send `Authorization: Bearer `). ## Docs - [Bittgenstein](https://bittgenstein.com/docs/index.md): What Bittgenstein serves and how access works - [Offerings](https://bittgenstein.com/docs/offerings.md): Every offering, what it does and what it is good for - [Using Bittgenstein](https://bittgenstein.com/docs/using.md): Keys, request styles, jobs, timeouts, content rules, docs for agents ## Optional - [All public docs in one file](https://bittgenstein.com/llms-full.txt) - [Writing](https://bittgenstein.com/blog): notes from the engineer who builds it