zenodo.search

stable Advanced

Search Zenodo research records (datasets, papers, software).

GET /v1/zenodo/search

What you get#

A list of Zenodo results in Onekey's unified shape, in data (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free 404 not_found instead.

What it costs#

Advanced · 5 credits for a fresh fetch, charged only when it succeeds.
Free when served from cache (0.2 credit for a cached response over 100 KB).
Free if the request is invalid (never charged) or the source fails or reports not found (refunded).

Parameters#

Name	Type	Required	Default	What it is	Constraints
`q`	string	yes	(required)	Search query	max 200 chars; must match `[^\x00-\x1f\x7f]{1,200}`; trimmed, repeated spaces collapsed

Request#

curl "https://api.onekey.dev/v1/zenodo/search?q=climate" \
  -H "x-api-key: YOUR_API_KEY"

Try it

Add your key to run this call right here. No key? Get one free. The key stays in this tab.

Recorded response#

A real Zenodo response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": [
    {
      "content": {
        "id": "16537543",
        "title": "SYMBA D6.1 - Report on system mapping and SYMBA forum activities",
        "text": "A report summarizing the SYMBA forum and cross-exchange activities with ongoing EU projects and initiatives such as elaboration of a collaborative strategy, organization of 2 interactive workshops.",
        "createdAt": "2025-07-28T00:00:00Z",
        "url": "https://zenodo.org/records/16537543"
      },
      "paper": {
        "doi": "10.5281/zenodo.16537543"
      },
      "engagement": {
        "views": 90
      },
      "entity": {
        "stats": {
          "downloads": 327
        }
      }
    },
    {
      "content": {
        "id": "16537726",
        "title": "SYMBA D6.3 - 1st Report on summary of New European Bauhaus activities",
        "text": "A 1st draft report with summary of the networking activities carried with the New European Bauhaus Community. It also includes the outcomes of 4 virtual meetings to share NEB updates, opportunities, events and guidance; 3 trainings/webinar sessions on awareness and NEB; and 3 sessions of NEB coaching to SYMBA.",
        "createdAt": "2025-07-28T00:00:00Z",
        "url": "https://zenodo.org/records/16537726"
      },
      "paper": {
        "doi": "10.5281/zenodo.16537726"
      },
      "engagement": {
        "views": 55
      },
      "entity": {
        "stats": {
          "downloads": 291
        }
      }
    }
  ],
  "metadata": {
    "platform": "zenodo",
    "endpoint": "search",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}

Field mapping#

How this endpoint's source fields become Onekey's unified schema. Fields the source lacks come back as null.

Source path	Onekey field	Transform
`id`	`content.id`	`toString`
`metadata.title`	`content.title`	-
`metadata.description`	`content.text`	`stripHtml`
`doi`	`paper.doi`	-
`metadata.publication_date`	`content.createdAt`	`toIsoDate`
`links.self_html`	`content.url`	`safeUrl`
`stats.unique_views`	`engagement.views`	`toNumber`
`stats.unique_downloads`	`entity.stats.downloads`	`toNumber`

Caching and freshness#

Fresh for about 2 minutes. Repeat calls in that window are served from cache and are free.
Between 2 minutes and 15 minutes the cached copy is still served instantly and marked stale: true while Onekey refreshes it in the background.
If the source is down when a refresh is needed, the last copy can be served for up to 1 hour more (marked stale).
A "not found" is remembered for 1 minute and is free.
The cache is shared across all customers, which is what keeps repeat calls cheap.

What can go wrong#

Status	Code	What to do
401	`unauthorized`	Check the `x-api-key` header.
402	`insufficient_credits`	Add credits; your balance must cover the price.
404	`not_found`	Unknown endpoint path.
422	`invalid_params`	Fix the parameters using the table above. Free.
429	`rate_limited`	Wait `Retry-After` seconds, then retry.
502	`upstream_error`	The source failed. Refunded; retry with backoff.

See Errors for the full list and retry guidance.

Status: stable (verified against the live source).