# DataCite on Onekey > 2 endpoints for DataCite (2 stable, 0 beta), 1 to 5 credits each. Category: Science & research. One key, one JSON shape. Base URL: https://api.onekey.dev Auth: header `x-api-key: `. Call shape: `GET /v1/{platform}/{endpoint}?{params}`. Every response is `{success, data, metadata, error}`; check `success` first. Cost is in `metadata.credits_charged`. Free when served from cache (0.2 credit for a cached response over 100 KB). Failed and not-found calls are refunded. Status: stable = verified against the live source; beta = not yet verified, fields may be missing. Page: https://onekey.dev/platforms/datacite Reference (Markdown): https://onekey.dev/docs/api/datacite.md All docs: https://onekey.dev/llms.txt ## Canonical fields returned Unified-schema fields (same names on every platform), with how many of the 2 mapped DataCite endpoints return each: - `content.id` (string): 2 - `content.title` (string): 2 - `content.url` (URL): 2 - `content.year` (integer): 2 - `paper.publisher` (string): 2 ## Endpoints ### datacite.doi DataCite DOI metadata. - Price: 1 credit per fresh call. Status: stable. Returns: one record. - Request: `GET https://api.onekey.dev/v1/datacite/doi?doi=10.5281%2Fzenodo.3242263` with header `x-api-key: YOUR_API_KEY` - Parameters: - `doi` (string, required): DOI - Fields returned: `content.id`, `content.title`, `paper.publisher`, `content.year`, `content.url` - Reference: https://onekey.dev/docs/api/datacite/doi.md ### datacite.search Search DataCite DOIs (datasets, software, papers). - Price: 5 credits per fresh call. Status: stable. Returns: a list. - Request: `GET https://api.onekey.dev/v1/datacite/search?q=climate` with header `x-api-key: YOUR_API_KEY` - Parameters: - `q` (string, required): Search query - Fields returned: `content.id`, `content.title`, `paper.publisher`, `content.year`, `content.url` - Reference: https://onekey.dev/docs/api/datacite/search.md ## Sample request ```bash curl "https://api.onekey.dev/v1/datacite/doi?doi=10.5281%2Fzenodo.3242263" \ -H "x-api-key: YOUR_API_KEY" ```