The AMS scoring pipeline draws on six authoritative external data sources to ensure citation figures, open access status, ISSN validity, and payment processing are all grounded in independently verified data. AMS does not collect or store source records independently — all data is fetched in real time or synchronised on a quarterly schedule directly from the respective provider APIs.
All data partnerships are read-only. AMS does not modify, delete, or write to any source records. Citation counts, OA flags, and ISSN records remain entirely under the control of their respective data providers.
01
CrossRef
- Primary source for DOI resolution and article-level citation counts
- Metadata for titles, abstracts, author lists, and publication dates
- Reference lists used to compute citation impact sub-scores
- ISSN-to-journal mapping for automated journal identification
- Data synced quarterly via CrossRef REST API (Polite Pool)
02
OpenAlex
- Open bibliographic database covering 250M+ scholarly works globally
- Author-level H-index and citation profile data for AMS author analytics
- Institution and country affiliation enrichment for editorial board scoring
- Journal concept tagging used for subject category assignment
- Fully open API with no authentication required; synced quarterly
03
DOAJ
- Directory of Open Access Journals — authoritative OA journal registry
- Used to verify whether a journal qualifies as fully open access
- DOAJ Seal status contributes positively to the OA dimension score
- APC information cross-referenced against DOAJ records for transparency checks
- Data accessed via DOAJ public API v2; updated quarterly
04
ISSN Portal
- Official international registry for ISSN identifiers operated by CIEPS
- All submitted journals have their ISSN validated against the portal before review
- Invalid or unregistered ISSNs are flagged and the publisher is notified
- Print and electronic ISSN variants both accepted and cross-checked
- Validation performed at submission and re-checked annually
05
Sherpa Romeo
- Leading database of journal open access and self-archiving policies
- Used to determine author rights, embargo periods, and CC licence types
- Restrictive self-archiving policies are flagged in the journal profile
- Green OA status (author can deposit in repository) noted on journal cards
- Data fetched via Sherpa API v2; updated at each annual re-evaluation
06
Stripe
- Stripe is used exclusively for secure payment processing on the AMS platform
- All card data is handled directly by Stripe — AMS never stores card numbers
- PCI-DSS Level 1 compliance guaranteed by Stripe's infrastructure
- Invoices and receipts are generated automatically and emailed to publishers
- Refunds are processed back to the original payment method within 14 days
Interested in a data partnership?
If you represent a data provider or research infrastructure and are interested in integrating with AMS, get in touch with our technical team.