Academic Paper Lookup

Scientific paper lookup by DOI, arXiv id or PMID: full abstract, Semantic Scholar TLDR, ready-to-paste BibTeX and APA citations, citation counts, retraction flag, paper type, open-access PDF link. Merged from OpenAlex, Crossref, arXiv, PubMed and Semantic Scholar. Use to cite a known paper or expand a search hit.

Open endpoint ↗

Price per call: $0.005
Chain: Base
Method: GET
Paid calls · 30 days: 3

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://papers.use.x402atlas.com/paper", { method: "GET" });
console.log(await res.json());

https://papers.use.x402atlas.com/paper