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Unpaywall

Unpaywall harvests open access content from over 50,000 publishers and makes it easy to find, track, and use

Actions2

  • DOI Actions
  • Search Actions

DOI → Get

AI-generated

Overview

This node integrates with the Unpaywall API to retrieve open access scholarly content metadata. Specifically, for the "DOI" resource and "Get" operation, it fetches detailed information about a single article identified by its DOI (Digital Object Identifier). This is useful for researchers, librarians, or developers who want to programmatically access open access status and metadata of academic papers.

Practical examples:

  • Automatically enrich bibliographic databases with open access availability.
  • Check if a specific article is freely accessible before attempting to download.
  • Integrate into workflows that track open access compliance or availability.

Properties

Name Meaning
Email Your email address required by Unpaywall to use their API. It is used to contact you in case of issues.
DOI The Digital Object Identifier of the article you want to retrieve information about.

Output

The node outputs an array of JSON objects representing the metadata of the requested DOI. Each object contains detailed information about the article, including its open access status, publisher, title, authors, and other bibliographic data as provided by the Unpaywall API.

No binary data output is produced by this node.

Dependencies

  • Requires internet access to call the Unpaywall public API.
  • No special credentials are needed beyond providing a valid email address.
  • No additional n8n credentials or environment variables are required.

Troubleshooting

  • Missing or invalid email: The API requires a valid email address; omitting or providing an invalid email may cause request failures.
  • Invalid DOI format: Providing an incorrect DOI string will result in errors or empty responses.
  • API rate limits or downtime: If the Unpaywall API is unreachable or rate-limited, requests will fail. Retrying later or checking network connectivity can help.
  • Unexpected response structure: Changes in the Unpaywall API could affect the output format; verify against the latest API documentation if issues arise.

Links and References

Discussion