Introduce Support for PubMed Integration for Langchain JS/TS

[erinL168]

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Feature request

We aim to integrate support for the PubMed API into the JavaScript/TypeScript version of LangChain. This integration will enable users to retrieve scientific research publications and relevant metadata from the PubMed database, aligning with the existing functionality available in LangChain's Python version.

Motivation

PubMed is a widely used database maintained by the U.S. National Library of Medicine (NLM), offering access to 37+ millions of high-quality scientific publications, including peer-reviewed articles, clinical studies, and biomedical research across various fields. While the current Python version of LangChain already supports PubMed API integration, the JavaScript/TypeScript version lacks equivalent functionality.

Integrating PubMed into the JavaScript/TypeScript LangChain will provide researchers, students, and developers with an easy-to-use tool for retrieving scientific literature directly within JavaScript/TypeScript applications. This will enable the development of web-based research tools, academic assistants, and Natural Language Processing workflows without switching to Python, achieving parity between the Python and JS/TS versions.

Proposal (If applicable)

We intend to develop the PubMed tool utilizing the official PubMed API (E-utilities) and would like to contribute this tool as a community package to Langchain JS/TS. This integration will allow for users to conduct scientific publication searches and fetch document abstracts/summaries. We intend to get started ASAP if approved.

[erinL168]

Hi @jacoblee93 ! Do you think we can turn this into an issue and start working on it?