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Hexagraph organizes scholarly metadata around six core entity types: outputs, authors, sources, institutions, publishers, and funders. Together, these entities form a connected knowledge graph — a work is authored by researchers affiliated with institutions, published in a source owned by a publisher, and funded by one or more funders. Every entity has a unique OA:ID and can be queried individually or traversed relationally via REST or GraphQL.

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Outputs

Outputs represent scholarly works — journal articles, preprints, books, datasets, and other academic publications. They are the central entity in Hexagraph and link to nearly every other entity type.
  • OA prefix: OA:W
  • Example ID: OA:W2107277218
  • Key fields: id, doi, title, year, date, citations, authors, source

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Authors

Authors are the researchers and scholars who produce scholarly outputs. Each author record aggregates publication history, citation counts, and institutional affiliations over time.
  • OA prefix: OA:A
  • Example ID: OA:A5086208034
  • Key fields: id, orcid, name, citations, outputs_count, affiliations

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Sources

Sources represent the venues in which outputs are published — journals, open-access repositories, conference proceedings, and preprint servers.
  • OA prefix: OA:S
  • Example ID: OA:S137773608
  • Key fields: id, name, issn, type

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Institutions

Institutions are universities, national laboratories, research centers, hospitals, and other organizations with which authors are affiliated.
  • OA prefix: OA:I
  • Example ID: OA:I1290206310
  • Key fields: id, name, country, type

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Publishers

Publishers are the organizations responsible for publishing and distributing scholarly sources. A publisher may own many journals or repositories.
  • OA prefix: OA:P
  • Example ID: OA:P4310320595
  • Key fields: id, name

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Funders

Funders are the agencies and organizations that provide financial support for research. Outputs can be linked to one or more funders through grant records.
  • OA prefix: OA:F
  • Example ID: OA:F4320306076
  • Key fields: id, name, doi

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Entity Relationships

Hexagraph entities are interconnected. An output links directly to its authors, the source it was published in, the institutions affiliated with its authors, and any funders that supported the research. Authors link to institutions through their affiliation history — an author may have been affiliated with multiple institutions at different points in their career. This relational structure means you can traverse the graph starting from any entity. For example, from a single output you can reach its authors, then their institutions, then other outputs from those institutions — all through the REST or GraphQL API.

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Entity Summary

Outputs

Endpoint: /outputs/{id}
OA Prefix: OA:W
Example ID: OA:W2107277218
Scholarly works: articles, preprints, books, datasets.

Authors

Endpoint: /authors/{id}
OA Prefix: OA:A
Example ID: OA:A5086208034
Researchers and scholars with publication histories.

Sources

Endpoint: /sources/{id}
OA Prefix: OA:S
Example ID: OA:S137773608
Journals, repositories, and conference venues.

Institutions

Endpoint: /institutions/{id}
OA Prefix: OA:I
Example ID: OA:I1290206310
Universities, labs, and research centers.

Publishers

Endpoint: /publishers/{id}
OA Prefix: OA:P
Example ID: OA:P4310320595
Organizations that publish scholarly sources.

Funders

Endpoint: /funders/{id}
OA Prefix: OA:F
Example ID: OA:F4320306076
Agencies and organizations funding research.