/europepmc/articles/search

POST /api/europepmc/articles/search

Price: 5 credits

Search Europe PMC biomedical articles by query

How to use it

Search biomedical literature on Europe PMC (PubMed/MEDLINE, PMC, preprints, patents) using Europe PMC query syntax. Supports free text, fielded search (author, title, affiliation, journal, DOI, publication year and year ranges), boolean operators, and filter flags (open access, has full text, in Europe PMC). Returns a list of articles, each with title, abstract, authors, journal info, publication year and date, keywords, MeSH headings, cross-reference ids (PMID, PMCID, DOI), full-text links, open-access flags, citation count, and the Europe PMC web URL.

Parameters

• access-token string required

Request body

• timeout integer — Max scrapping execution timeout (in seconds) (default: 300; min: 20; max: 1500)
• query string required — Search query in Europe PMC query syntax. Supports free text, fielded search (AUTH:"Smith J", TITLE:cancer, AFF:..., JOURNAL:..., DOI:..., PUB_YEAR:2020, PUB_YEAR:[2018 TO 2022]), boolean AND/OR/NOT, and filter flags (OPEN_ACCESS:Y, HAS_FT:Y, IN_EPMC:Y, HAS_REFERENCES:Y, LANG:eng) (examples: "cancer", "AUTH:\"Iadecola C\" AND PUB_YEAR:[2015 TO 2020]", "COVID-19 AND OPEN_ACCESS:Y"; minLength: 1)
• count integer required — Number of articles to return (min: 1)
• result_type string — Level of detail per article (default: "core"; one of: "core", "lite", "idlist")
• sort string — Result ordering (default: "relevance"; one of: "relevance", "CITED desc", "CITED asc", "P_PDATE_D desc", "P_PDATE_D asc")

Response

• @type string (default: "EuropepmcArticle")
• id string required
• source string required
• pmid string nullable
• pmcid string nullable
• doi string nullable
• abstract string nullable
• author_string string nullable
• affiliation string nullable
• authors array (default: [])
  • @type string (default: "EuropepmcAuthor")
  • full_name string nullable
  • first_name string nullable
  • last_name string nullable
  • initials string nullable
  • orcid string nullable
  • affiliations array (default: [])
• journal object nullable
  • @type string (default: "EuropepmcJournal")
  • iso_abbreviation string nullable
  • medline_abbreviation string nullable
  • nlmid string nullable
  • issn string nullable
  • essn string nullable
  • volume string nullable
  • issue string nullable
  • issue_id integer nullable
  • year integer nullable
  • month_of_publication integer nullable
  • print_publication_date string nullable
  • date_of_publication string nullable
• pub_year integer nullable
• page_info string nullable
• first_publication_date string nullable
• language string nullable
• pub_model string nullable
• publication_status string nullable
• pub_types array (default: [])
• version_number integer nullable
• has_evaluations boolean (default: false)
• versions array (default: [])
  • @type string (default: "EuropepmcVersion")
  • id string required
  • source string nullable
  • version_number integer nullable
  • first_publish_date string nullable
  • pub_types array (default: [])
  • has_evaluations boolean (default: false)
• keywords array (default: [])
• mesh_headings array (default: [])
  • @type string (default: "EuropepmcMeshHeading")
  • descriptor_name string required
  • is_major_topic boolean (default: false)
  • qualifiers array (default: [])
• chemicals array (default: [])
  • @type string (default: "EuropepmcChemical")
  • name string required
  • registry_number string nullable
• grants array (default: [])
  • @type string (default: "EuropepmcGrant")
  • grant_id string nullable
  • agency string nullable
  • acronym string nullable
• comments array (default: [])
  • @type string (default: "EuropepmcComment")
  • id string nullable
  • source string nullable
  • type string nullable
  • note string nullable
• full_text_urls array (default: [])
  • @type string (default: "EuropepmcFullTextUrl")
  • url string required
  • site string nullable
  • document_style string nullable
  • availability string nullable
• license string nullable
• is_open_access boolean (default: false)
• in_epmc boolean (default: false)
• in_pmc boolean (default: false)
• has_pdf boolean (default: false)
• has_book boolean (default: false)
• has_suppl boolean (default: false)
• has_references boolean (default: false)
• has_text_mined_terms boolean (default: false)
• has_db_cross_references boolean (default: false)
• has_labs_links boolean (default: false)
• has_data boolean (default: false)
• cited_by_count integer (default: 0)
• date_of_creation string nullable
• date_of_revision string nullable
• first_index_date string nullable
• web_url string (default: "")

Errors

• 422 — The request body did not validate Check the fields against this schema. A URN with the wrong prefix is the most common cause.
• 408 — The request ran past its time limit Raise `timeout` in the request body, up to the maximum this endpoint documents. Lowering `count` or turning off the `with_*` flags also helps, because less work finishes sooner.
• 412 — The entity was not found, or a precondition failed Retrying will not help: either the entity does not exist, or the input points at a different one.
• 429 — Too many requests: a rate limit or a usage window is exhausted When the response carries an X-Retry-After header, wait that many seconds and retry: the same number is in the body as `detail.retry_after`, and the limit clears once that window passes. The message in the body names the limit that was hit.
• 500 — Something broke on our side Retrying will not help. If it keeps happening, send us the X-Request-ID from the response headers.
• 529 — Rate limit reached, or the endpoint is overloaded Wait at least 30 seconds, then retry.

Response headers

• X-Error — Error message text (present only on error)
• X-Request-ID — Unique request identifier
• X-Execution-Time — Execution time in seconds
• X-Result-Count — How many records the body carries. 0 means an empty result, which is a normal answer and not by itself an error. A non-zero count can come back together with X-Error when the failure happened partway through — read this header and X-Error independently.
• X-Total-Available-Results — How many records exist for this query, when the endpoint can say. On a `dry_run` request this is the answer and the body is empty. It saturates: the endpoint's documented maximum means 'at least that many', any smaller number is exact.
• X-Warning — Present when the request body carried keys this endpoint does not document. They were ignored, so any filter you meant to apply through them did not apply. Check the spelling against this schema and retry.
• X-Retry-After — Seconds to wait before retrying. Present only on 429.