Look up a paper's real, resolvable DOI
Ask for an academic work's DOI or citation and Zeplik reads the real registered record from Crossref, then answers with the actual DOI, the authors, the journal, the year, and the publisher. A language model fabricates DOIs with total confidence, producing well-formed strings that resolve to nothing and misattributing authors and journals. This reads the live record, so any DOI it states actually resolves, and when nothing matches it says so instead of inventing a citation.
The lookup is free; you pay only the normal cost of the answer, shown before you send.
How it works
Give a DOI or a title
Ask in plain language, like 'what is the DOI of Attention Is All You Need?' or paste a DOI to resolve it. A title or a DOI both work.
Zeplik reads Crossref
It reads the live registered record from Crossref, not the model's memory, and treats each field as source data. A title query finds the closest registered work.
Read the real citation
The answer states the real, resolvable DOI along with the authors, journal, year, and publisher, so the citation is grounded in the registry.
Worked examples
Real prompts you can open in the composer with the text ready to review. Nothing sends on its own. Swap in your own details.
Prompt: What is the DOI of Attention Is All You Need?
Zeplik reads Crossref and returns the paper's real, resolvable DOI and citation, rather than a well-formed DOI the model invented.
Open this in ZeplikPrompt: Give me the full citation for DOI 10.1038/nature12373
It resolves the DOI to the registered record, so the authors, journal, and year come from the source rather than memory.
Open this in ZeplikPrompt: Find the real DOI for the BERT paper by Devlin et al.
From a free-text title it finds the closest registered work and returns its real DOI, instead of fabricating one that resolves to nothing.
Open this in ZeplikWhat it can and cannot do
The lookup is precise about what it can verify and honest about its edges. Here is the plain posture.
Zeplik reads the Crossref record, so the DOI it returns resolves at doi.org rather than being a well-formed string that points to nothing.
It returns the registered metadata, so the citation is attributed correctly instead of misremembering authors or the venue.
Paste a DOI and it returns that work's full record, so you can confirm a citation is real before you use it.
If no registered work matches, Zeplik says so rather than inventing a DOI or citation to fill the answer.
It returns the bibliographic record and DOI, not the paper's full text. Follow the DOI to the publisher for the article itself.
Not every document has a DOI. If a work is unregistered, Zeplik says none was found rather than manufacturing one.
Grounded, and honest by default
- It cites the registered record. Every answer states the DOI and citation from the live Crossref record, so nothing is vague or recalled from a frozen snapshot.
- It will not invent a DOI. A language model fabricates DOIs that resolve to nothing, so when nothing matches Zeplik says so rather than manufacturing a plausible one.
- Registry data cannot hijack the answer. The record is treated as untrusted content: Zeplik reads and reports it but never obeys instructions embedded inside an abstract or title.
Frequently asked questions
- Where does the DOI data come from?
- From Crossref, the DOI registration agency for scholarly works, read live and keyless. The DOI, authors, journal, and year Zeplik returns are Crossref's own registered record.
- Why not just ask a chatbot for a paper's DOI?
- Because a language model fabricates well-formed DOIs that resolve to nothing and misattributes citations. This tool reads the real registered record instead, so the DOI actually resolves.
- Can I give a title instead of a DOI?
- Yes. A free-text title or bibliographic query finds the closest registered work and returns its real DOI. You can also paste a DOI to resolve it directly.
- What if the work has no DOI?
- Then Crossref returns no match, and Zeplik says none was found rather than inventing a DOI. Not every document is registered with a DOI.
- Does a DOI lookup cost credits?
- The lookup itself is free. You pay only the normal model-token cost of the answer Zeplik writes around it, shown before you send, exactly like any other message.
Related skills
More on Zeplik
Cite the real DOI
Look up a paper's real, resolvable DOI, authors, journal, and year, from Crossref, with an honest answer when nothing matches. Free to start.