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The /funders endpoints expose Hexagraph’s index of research funding agencies — including government bodies, private foundations, and international research councils. Funder records include DOI identifiers (where registered) for cross-referencing with other scholarly infrastructure. Funders are identified by the OA:F prefix system.

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List funders

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search
string
Search for funders by name. Partial matches are supported (e.g. NIH matches “National Institutes of Health”).
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filter
string
Narrow results with key-value filters. Multiple filters may be combined with a comma.
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page
integer
default:"1"
Page number for paginated results. Starts at 1.
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per_page
integer
default:"25"
Number of results returned per page. Maximum value is 200.
curl "https://hexagraph-core.onrender.com/funders?search=NIH"

[
  {
    "id": "OA:F4320306076",
    "name": "National Institutes of Health",
    "doi": "10.13039/100000002"
  },
  {
    "id": "OA:F4320332161",
    "name": "NIH National Cancer Institute",
    "doi": "10.13039/100000054"
  }
]

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Get a single funder

Fetch a specific funding agency by its OA:F identifier. 
curl "https://hexagraph-core.onrender.com/funders/OA:F4320306076"

{
  "id": "OA:F4320306076",
  "name": "National Institutes of Health",
  "doi": "10.13039/100000002"
}

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Response fields

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id
string
required
Unique identifier for the funder. Always prefixed with OA:F (e.g. OA:F4320306076).
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name
string
required
Full display name of the funding agency (e.g. "National Institutes of Health").
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doi
string
The Crossref Funder Registry DOI for this agency (e.g. "10.13039/100000002"). May be null if no DOI is registered in Hexagraph’s index.
Related endpoints: funder relationships appear on Outputs that acknowledge grant support.