scholarly-metadata
Semantic Scholar (Academic Graph)
An academic search engine and citation graph from the Allen Institute for AI, covering about 220 million papers with citation context. Search on the website, or use the free Graph API, which needs no key but runs on a shared, heavily throttled anonymous pool. Especially handy for following citation trails and seeing how papers relate. Under load the keyless API is frequently rate-limited, so the website is the more dependable route.
Warum es nützlich ist & wie es funktioniert
Semantic Scholar is especially useful for following citation trails: it shows not just citation counts but also the sentence-level context in which papers cite each other, helping you quickly judge how a reference is actually used. The main website at semanticscholar.org is the most reliable way to search, since the API's keyless shared pool is frequently rate-limited under heavy load. You can search by title, author, or topic, and navigate forward and backward through citation networks. The website remains fully free and unpaywalled.
Was drinsteckt
More than 200 million papers indexed across all academic fields, with over 2.4 billion citation edges linking them, plus records for more than 80 million authors.
API-Zugang
https://api.semanticscholar.org/graph/v1/paper/DOI: <doi>?fields=...
Zugang
Programmatic API access (a key may be required, see the API tag).