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skills/brycewang-stanford/Auto-Empirical-Research-Skills/43-wentorai-research-plugins-skills-literature-fulltext-doaj-api

43-wentorai-research-plugins-skills-literature-fulltext-doaj-api

1
brycewang-stanford/Auto-Empirical-Research-Skills·Research·Audit pending·Snapshot fafd0dcac1f5

Summary

This source did not publish a separate summary. Review SKILL.md before using the skill.

SKILL.md

DOAJ API Guide

Overview

The Directory of Open Access Journals (DOAJ) is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. Founded in 2003, DOAJ currently indexes over 20,000 journals and 9 million articles from 130 countries, covering all areas of science, technology, medicine, social sciences, arts, and humanities.

DOAJ serves as a quality filter for open access publishing. Journals must meet strict criteria to be included, including editorial review, transparent policies, and adherence to open access principles. This makes DOAJ particularly valuable for researchers who need to verify whether a journal is a legitimate open access outlet, librarians curating discovery systems, and developers building tools that surface OA content.

The DOAJ API provides free, unauthenticated access to search and retrieve journal and article metadata. All data is available under a CC BY-SA license. The API returns JSON and supports Elasticsearch-style queries for advanced filtering.

Authentication

No authentication required. The DOAJ API is fully open and free to use. No API key, registration, or email is needed. There are no published rate limits, but users should be respectful and avoid sending excessive concurrent requests. For bulk data access, DOAJ provides data dumps at https://doaj.org/docs/public-data-dump/.

Core Endpoints

Article Search: Find Open Access Articles

  • URL: GET https://doaj.org/api/search/articles/{search_query}
  • Parameters:
    ParamTypeRequiredDescription
    search_querystringYesSearch query (URL path parameter, supports field-specific search)
    pageintegerNoPage number (default: 1)
pageSizeintegerNoResults per page (default: 10, max: 100)
sortstringNoSort field (e.g., created_date:desc)
  • Example:
    curl "https://doaj.org/api/search/articles/climate+change?page=1&pageSize=10"
    
  • Response: JSON with total count and results array. Each result contains bibjson with title, abstract, author, journal.title, identifier (DOI, ISSN), link (full-text URL), year, month, keywords, and subject.
  • Journal Search: Find Open Access Journals

    • URL: GET https://doaj.org/api/search/journals/{search_query}
    • Parameters:
      ParamTypeRequiredDescription
      search_querystringYesJournal search query
      pageintegerNoPage number (default: 1)
      pageSizeintegerNoResults per page (default: 10, max: 100)
    • Example:
      curl "https://doaj.org/api/search/journals/bioinformatics?page=1&pageSize=5"
      
    • Response: JSON with journal records containing bibjson with title, alternative_title, identifier (ISSN, EISSN), publisher, institution, subject, license, apc (article processing charge info), language, and editorial.review_process.

    Article by DOI: Direct Lookup

    • URL: GET https://doaj.org/api/search/articles/doi:{doi}
    • Parameters:
      ParamTypeRequiredDescription
      doistringYesThe DOI to look up
    • Example:
      curl "https://doaj.org/api/search/articles/doi:10.1371/journal.pone.0213676"
      
    • Response: JSON with matching article records from DOAJ-indexed journals.

    Journal by ISSN: Direct Lookup

    • URL: GET https://doaj.org/api/search/journals/issn:{issn}
    • Parameters:
      ParamTypeRequiredDescription
      issnstringYesThe ISSN to look up
    • Example:
      curl "https://doaj.org/api/search/journals/issn:1932-6203"
      
    • Response: JSON with journal record including full metadata and policies.

    Rate Limits

    No published rate limits. DOAJ does not enforce strict API quotas. However, the service is maintained by a small nonprofit team. Best practices include limiting requests to a reasonable rate (2-5 per second), caching results, and using the public data dump for large-scale analyses. Abusive usage may result in IP blocking without notice.

    Common Patterns

    Verify Journal Quality

    Check if a journal is indexed in DOAJ (a proxy for quality and legitimacy):

    curl -s "https://doaj.org/api/search/journals/issn:2045-2322" | jq '{total: .total, title: .results[0].bibjson.title, publisher: .results[0].bibjson.publisher.name, license: .results[0].bibjson.license[0].type}'
    

    Find OA Articles in a Subject Area

    Search for articles within a specific discipline with full-text links:

    curl -s "https://doaj.org/api/search/articles/bibjson.subject.term:neuroscience?pageSize=20" | jq '.results[] | {title: .bibjson.title, journal: .bibjson.journal.title, url: .bibjson.link[0].url, year: .bibjson.year}'
    

    Check APC (Article Processing Charge) Information

    Determine if a journal charges fees for publishing:

    curl -s "https://doaj.org/api/search/journals/issn:2041-1723" | jq '.results[0].bibjson | {title: .title, has_apc: .apc.has_apc, apc_amount: .apc.max[0].price, currency: .apc.max[0].currency}'
    

    References

    • Official documentation: https://doaj.org/api/docs
    • DOAJ public data dump: https://doaj.org/docs/public-data-dump/
    • DOAJ journal application criteria: https://doaj.org/apply/guide/

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