Search articles on J-STAGE. Returns the unified response envelope.

J-STAGE matches text against full text and treats multi-word terms loosely, so a high result.total is often noisy — read matching_mode (full_text_broad), result.breadth, and the diagnostics before treating a count as the size of a literature. A SCRIPT_LATIN_QUERY diagnostic means the query searched romanized metadata only; re-issue in kanji/kana. The same string can return very different totals on CiNii (metadata conjunction).

Resolve a J-STAGE DOI to its article record. Returns the unified envelope (operation 'resolve_doi') with one item on success, or zero items plus a diagnostic when the DOI is not in J-STAGE's issuance pattern or is unmatched.

Return the volume/issue spine of a journal (by material/issn/cdjournal).

Navigation aid, not literature retrieval: returns structural JSON (volumes with publisher/journal metadata), not the record envelope.