Free APIKnowledgeAPI keyOfficial
Semantic Scholar Academic Graph API
Search 200M+ papers with AI relevance, citations and references, optional key
Semantic Scholar (Allen Institute for AI) exposes a graph of 200M+ academic papers, authors, citations and references. You can search by keyword, fetch a paper's full citation graph, and pull AI-generated TLDRs and embeddings. It works with no key against a shared rate-limit pool, and a free key gives you a dedicated, more reliable limit.
Free tier
Free; no key uses a shared pool. Free API key (by request) gives a dedicated ~1 req/secRate limits
Unauthenticated: shared pool, default ~5,000 requests / 5 minutes across ALL anonymous users, so 429s are common under load. With a free key: ~1 request/second dedicatedAuth
API keyBase URL
https://api.semanticscholar.org/graph/v1What you'd build with it
- Build a citation-graph explorer or related-work finder
- Pull AI TLDRs to summarize a reading list for an agent
- Rank papers by influence and citation count
- Enrich a bibliography with abstracts and DOIs
Key endpoints
- GET
/paper/search?query={q}Relevance-ranked paper search - GET
/paper/{id}Full metadata, abstract and TLDR for one paper - GET
/paper/{id}/citationsPapers that cite this one - GET
/paper/{id}/referencesPapers this one cites
Members
Members get the runnable recipe
Sign in free to copy the example request, see a sample response, and read the gotchas.
Tags
knowledgeresearchpaperscitationsreference