Literature & commentary
OpenAlex
OpenAlex is an open index of the scholarly literature: hundreds of millions of publications, with their authors, institutions, journals, topics, funders and citation relations. The data is released under a CC0 declaration and can be queried through a public API, with a free daily allowance and paid plans for heavier use. For legal and policy work OpenAlex is chiefly useful for locating references: who has published on this subject, where it appeared, and what cites it.
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What this source does not give you
OpenAlex indexes metadata, it is not a library: for most of the indexed publications no openly accessible full text is available, so a hit is often a reference rather than a readable article. The index applies no quality filter either — preprints, reports, dissertations and peer-reviewed articles sit side by side — and coverage of Dutch-language legal literature is considerably thinner than that of international, English-language scholarship.
Frequently asked questions
- Does OpenAlex give me the full text of an article?
- Usually not. OpenAlex records for each publication whether an openly accessible version exists and where it is, but when checked in September 2026 that applied to fewer than half of the indexed works. For the remainder you get title, authors, journal, year and often an abstract, and the text itself has to be obtained through the publisher, a repository or a library. So treat an OpenAlex result as a reference, not as a document.
- Is everything in OpenAlex peer-reviewed?
- No, and that is a deliberate choice by the index. OpenAlex harvests broadly from Crossref, repositories and other registries, and in doing so also includes preprints, conference papers, book chapters, reports and datasets. Whether a work went through peer review has to be inferred from its type and the source it appeared in — the index does not make that judgement for you. For a citation in advice or a report, that check is indispensable.
- Who runs OpenAlex and what does it cost?
- OpenAlex releases its data under a CC0 declaration: the data is free to use, without permission and without usage restrictions. The services around it are organised commercially. Every account gets a free daily API allowance that is sufficient for most personal and research use; beyond that it runs on prepaid usage or an annual plan, with the heavier plans including things like a daily full copy of the database. The model is therefore open data with paid delivery, not paid data.
- How good is the coverage of Dutch legal literature?
- Variable and generally limited. OpenAlex is built on international registries in which Dutch-language professional journals, case annotations and loose-leaf commentaries are barely represented. University publications, dissertations and English-language legal scholarship are usually findable, but anyone who needs Dutch doctrine for an advice should not assume that absence from OpenAlex means nothing has been written on the subject.
- What is OpenAlex most useful for in practice?
- For exploration and substantiation. It is an efficient way to see what research exists in a field, which authors and institutions are active in it, and which publications cite a given work — for instance on a new policy topic, a technical dispute, or an argument that calls for scholarly literature. Reading and assessing what you find then requires other channels.