Apify Actor · Research

OpenCitations Scraper

Citation graph by DOI from 1.6B open citation links

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$1 / 1,000 citations

Status

State ● Live

Pricing PPE

Category Research

Overview

What it does

Given a DOI, retrieve all citing papers and cited references from OpenCitations' 1.6 billion citation links. Build citation networks and map research influence. Pairs with the Crossref scraper. No API key required.

Features

Built in

✓ Citing papers and cited references by DOI
✓ 1.6B open citation links
✓ Build citation networks and influence maps
✓ Pairs with Crossref and OpenAlex
✓ Zero charge on empty runs

From the blog

Guides & tutorials

Jun 23, 2026 · 3 min read

OpenCitations API: Build Citation Graphs from 1.6 Billion Open Citation Links

Pull all citing papers and cited references for any DOI from OpenCitations' 1.6B citation index. Build citation networks, map research influence, and run bibliometric analysis without a subscription.

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Pay only for results delivered. No credit card required to sign up.

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