OverCite: Add citations in LaTeX without leaving the editor

Adding citations while drafting in LaTeX often requires leaving the editor, searching for a paper in mind, copying its BibTeX entry into the project bibliography, renaming the cite key, and then returning to the sentence. $\mathtt{\text{OverCite}}$ is an open-source, lightweight tool that lets authors find, select, and insert citations without leaving the writing environment. In Overleaf, $\mathtt{\text{OverCite}}$ uses rough citation placeholders (e.g., $\mathtt{\text{citep{Perlmutter1999}}}$) and local sentence context to query ADS/SciX-indexed literature, rank likely matches, and insert the selected reference, without leaving the editor. A companion $\mathtt{\text{VS}}\mathtt{\text{Code}}$ extension provides the same functionality for local LaTeX projects. The ADS/SciX database includes astronomy, physics, computer science, mathematics, biology, and \emph{all} indexed arXiv e-prints, making $\mathtt{\text{OverCite}}$ useful across a broad range of scientific disciplines.