Crossref DOI Citation Export

Resolve a selected DOI bibliography into structured metadata and CSL JSON for citation managers and research agents.

Input

dois accepts 1–20 DOI strings or https://doi.org URLs. The default resolves 10.1038/s41586-020-2649-2. Blank, malformed, unknown input keys, or more than 20 entries fail before retrieval. DOI identity is case-insensitive and duplicate identifiers are fetched and charged once. All selected DOIs must resolve; a missing record fails the batch.

Output

One row per unique DOI: title, ordered authors, container titles, source work type, publisher, publication date-parts, separate print/online date-parts, deposited/indexed timestamps, separate outgoing-reference and incoming-citation counts, and a CSL JSON projection. CSL issued uses the source published date-parts and never pads an absent month/day. Source-specific types map to CSL standard types; unsupported types use document and remain visible in workType. Null/empty optional metadata means the source did not provide it. Every row also includes source relation/update metadata and publisher license links. Every row includes DOI/API URLs, Crossref attribution, metadata reuse guidance, and retrieval time. No abstract, reference text, PDF, or full text is copied. Source relation/update-to metadata, update-policy URL and publisher license links are retained. These are source assertions, not a derived retraction/currentness/reuse verdict; no linked text is fetched. SUMMARY metadata in key-value storage records requested/unique/delivered counts and limits.

Limits

20 input entries and 20 unique output rows per run; sequential HTTP with at least one second between API requests; 429/5xx fail with sanitized actionable errors, with no automatic retry. Requests stop at the configured budget. Acquisition has a 180-second deadline and delivery a 90-second deadline; each HTTP request has a 30-second timeout. No discovery search, cursor pagination, OpenAlex, private API key, or external paid service is used. Timeout, source schema change, rate-limit exhaustion, and missing DOI fail visibly. This is metadata retrieval; it does not assess evidence quality or make citation recommendations.

Pricing

One doi-delivered event per validated unique dataset row at $0.001; no start fee and no trial events. Source records are collected and coverage checked before output. Apify's configured maximum chargeable event budget caps selection before source requests; if it permits fewer rows than unique DOI inputs, the run fails before requests and charges. Repeated runs are charged again for delivered records. No charge for duplicate inputs, failed retrievals, or SUMMARY.

Privacy

Public author names are retained only as required bibliographic attribution. Affiliations, contact addresses, publisher abstracts, credentials, cookies, contributor profiles, and source response headers are excluded. The Actor does not fetch DOI landing pages or linked documents.