Questions

The WIFU Bibliothek — 459 publications across 515 language editions: Praxisleitfäden, Praxisartikel, WIFU_kompakt, Studien, the WIFU-Schriftenreihe and books, published between 2007 and 2026. Callista holds the full text of each, split into 8,685 sections, plus 1,313 figures.

The corpus is refreshed from wifu.de periodically rather than continuously. A publication that appeared this week may not be in yet. The figures on the overview page carry the date they were counted.

That is much of the point. Claude reads the German for you: ask in English, and it will search the German material and answer in English, quoting and translating as it goes. Callista indexes German text with German stemming and English text with English stemming, so neither language is searched approximately.

What you lose is nuance in translation. For anything you intend to cite, follow the link and read the original.

Not through Callista. It returns the text, the metadata and a link to the publication’s page on wifu.de, where WIFU distributes the PDF on their own terms.

Because a semantic enrichment pass — abstracts, keywords, topic classification, figure descriptions — is still running across the corpus. Where it has landed you get a fuller summary; where it has not, you get the publisher’s own excerpt, which is a perfectly good answer. Search works across everything either way. Coverage of the enrichment layer is currently low and growing.

A German original and its English translation are two editions of one work. Results are grouped at the level of the work, with its editions listed underneath, so a bilingual publication does not take two slots in your results just for existing twice.

People who have been invited. There is no domain rule and no self-service sign-up — access is granted one email address at a time, by hand.

Almost always the address. Access is tied to the exact address the invitation went to; a personal address, an alias, or a different institutional address will be turned away. Tell us which address you would prefer and we can move it.

Please don’t. Sign-in is tied to your mailbox, and usage is attributed to you. If a colleague needs access, ask for them — it takes a moment.

Remove the connector in Claude’s settings, and tell us if you would like the grant withdrawn as well. Withdrawal takes effect on the next request, not whenever a token happens to expire.

Which tool was called, the query text, how many results came back, how long it took, and which account made the call. Nothing from your wider conversation with Claude reaches Callista — it only ever sees the search or lookup Claude sends it.

The queries that return nothing are read as a to-do list: they show what people expect the library to answer and it currently does not.

Forty tool calls an hour per account. It is a ceiling against runaway loops, not a quota — ordinary use will not reach it. Failed calls are not counted against you.

No. It has read-only access to the corpus and no ability to modify it.

No. The publications are WIFU’s and remain theirs. Callista is operated by CeFEO at Jönköping International Business School as a way of reading that literature inside Claude. Anything Callista returns should be attributed to the WIFU publication it came from, not to Callista.

Cite the underlying publication. Callista gives you the title, authors, year and a link precisely so that you can. If you want to describe how you found the material, naming the tool in a methods note is fine.

It can. Callista returns source text faithfully, but the summary on top of it is generated. For anything consequential, open the linked publication and check. Report anything that looks systematically wrong — that is usually a retrieval problem worth fixing.