Write first.
Cite later.

The citation tool for students. Mark any claim in your draft with [src]. ZeroCite searches PubMed, arXiv, Semantic Scholar, OpenAlex, and CrossRef, ranks the best matches, and builds a full references page for you.

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From a rough draft to fully cited, all in one click
Caffeine improves short-term memory in young adults. [src]
Caffeine improves short-term memory in young adults (Nehlig, 2010).
How it works

Three steps. No tabs.

ZeroCite is built for the boring last mile of writing: turning a finished draft into a properly cited paper without disappearing into Google Scholar for two hours.

1

Mark your claims

Paste your draft. Add [src] after any sentence that needs a citation.

2

ZeroCite searches

Claude reads each claim in context, builds a targeted academic query, and pulls the best peer-reviewed match.

3

Approve and export

Review ranked results. Approve, skip, or swap. Get APA, MLA, Chicago, or IEEE formatted automatically.

Searches peer-reviewed sources from
PubMed

Run by the U.S. National Library of Medicine and considered the gold standard for biomedical research, indexing 35M+ peer-reviewed citations. Best for medicine, biology, nursing, public health, neuroscience, and psychology papers.

arXiv

A Cornell-hosted preprint server where papers are moderated but not peer-reviewed, so results are cutting-edge but unsettled. Best for CS, machine learning, physics, math, and statistics — fields where the freshest work lives here before formal publication.

Semantic Scholar

A trusted cross-field index by the Allen Institute for AI covering ~200M papers; the index is reputable, but any individual paper's credibility still depends on its venue. Best for general academic search, finding highly-cited work, and tracing citation graphs.

OpenAlex

An open, fully-curated catalog of the global research system (successor to Microsoft Academic Graph) with strong metadata and broad non-English coverage. Best for humanities and social-science searches and finding open-access versions outside the major Anglo-American journals.

CrossRef

The official DOI registry for scholarly publishers, making it authoritative for publication metadata — if a paper has a DOI, CrossRef knows about it. Best for humanities, history, literature, religion, and law journal articles and for verifying exact citation details.

Pricing

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