Generate presigned URLs batch
Signs upload URLs for up to 100 files in one call. results[i] always matches files[i]. An empty files list, more than 100 entries, or an entry missing a required field fails the whole request with 400; a per-file validation problem is reported in that file’s error instead.
Requires the documents:write scope. Rate limit: 1000 requests per minute per key (the upload lane).
Authentication
Bearer token. Use ss_live_… for live data or ss_test_… for the sandbox (test mode). See Authentication.
Headers
Pin the API version, e.g. 2026-10-07. Omit to get the latest. See Versioning.
Request
Response headers
The API surface version the server resolved for this request. Always present, regardless of whether the client supplied the request-side SpreadSpace-Version header. Default: 2026-10-07.
Request budget of the endpoint’s rate-limit policy per 60-second sliding window. See Rate limits.
Requests left in the current window. Suppressed on 429 responses produced outside the rate limiter (for example a usage throttle), where a remaining budget would be misleading.
Seconds until a guaranteed-fresh window.
The active policy in limit;w=window-seconds form.