Old OpenAlex API documentation
  • Overview
  • Quickstart tutorial
  • API Entities
    • Entities overview
    • 📄Works
      • Work object
        • Authorship object
        • Location object
      • Get a single work
      • Get lists of works
      • Filter works
      • Search works
      • Group works
      • Get N-grams
    • 👩Authors
      • Author object
      • Get a single author
      • Get lists of authors
      • Filter authors
      • Search authors
      • Group authors
      • Limitations
      • Author disambiguation
    • 📚Sources
      • Source object
      • Get a single source
      • Get lists of sources
      • Filter sources
      • Search sources
      • Group sources
    • 🏫Institutions
      • Institution object
      • Get a single institution
      • Get lists of institutions
      • Filter institutions
      • Search institutions
      • Group institutions
    • 💡Topics
      • Topic object
      • Get a single topic
      • Get lists of topics
      • Filter topics
      • Search topics
      • Group topics
    • 🗝️Keywords
    • 🏢Publishers
      • Publisher object
      • Get a single publisher
      • Get lists of publishers
      • Filter publishers
      • Search publishers
      • Group publishers
    • 💰Funders
      • Funder object
      • Get a single funder
      • Get lists of funders
      • Filter funders
      • Search funders
      • Group funders
    • 🌎Geo
      • Continents
      • Regions
    • 💡Concepts
      • Concept object
      • Get a single concept
      • Get lists of concepts
      • Filter concepts
      • Search concepts
      • Group concepts
    • Aboutness endpoint (/text)
  • How to use the API
    • API Overview
    • Get single entities
      • Random result
      • Select fields
    • Get lists of entities
      • Paging
      • Filter entity lists
      • Search entities
      • Sort entity lists
      • Select fields
      • Sample entity lists
      • Autocomplete entities
    • Get groups of entities
    • Rate limits and authentication
  • Download all data
    • OpenAlex snapshot
    • Snapshot data format
    • Download to your machine
    • Upload to your database
      • Load to a data warehouse
      • Load to a relational database
        • Postgres schema diagram
  • Additional Help
    • Tutorials
    • Report bugs
    • FAQ
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Limitations

PreviousGroup authorsNextAuthor disambiguation

Last updated 1 year ago

Works with more than 100 authors are truncated

When retrieving a list of works in the API, the authorships list within each work will be cut off at 100 authorships objects in order to keep things running well. When this happens the boolean value is_authors_truncated will be available and set to true. This affects a small portion of OpenAlex, as there are around 35,000 works with more than 100 authors. This limitation does not apply to the .

  • Example list of works with truncated authors

To see the full list of authors, go to the individual record for the work, which is never truncated.

  • Work with all 249 authors available

This affects filtering as well. So if you filter works using an author ID or ROR, you will not receive works where that author is listed further than 100 places down on the list of authors. We plan to change this in the future, so that filtering works as expected.

👩
data snapshot
https://api.openalex.org/works?filter=authors\_count:>100
https://api.openalex.org/works/W2168909179