NeuroVault

Free allowance: Free, no published per-file or per-account cap found on the site or FAQ (silence, not a stated infinity).
Verdict: caveatusable, with a named limit or an unprobed read path
Cost: free tier
Identity: institution?placeholder, not evidence; card unknown, phone unknown
Binding limit: noneno named constraint binds
Evidence: reported3 sources; a third party said so
Freshness: stale on 2026-11-05checked 2026-10-21 (inherited); stale on 2026-11-05

Free tier	Free, no published per-file or per-account cap found on the site or FAQ (silence, not a stated infinity). 715,868 images currently indexed. unit mixed; metered on unstated
Price	none stated
Identity	institution (inferred, not read) not published
Egress	Free and anonymous. `neurovault.org/media/images/...` serves with `Accept-Ranges: bytes`, `Access-Control-Allow-Origin: *`, no auth.
Per-object cap	not stated
Retention	per-object-cap: unstated; scope is restrictive — statistical maps/parcellations/atlases only. Retention: permanent URLs
Interface	rest rest
Tooling	Documented REST API (`/api/images/?format=json`, `/api/collections/`), plus the `pynv`/`nilearn` fetch-atlas path. Upload needs an account but is API-driven.
Composes with	Unlimited collections per account; each image is an independent anonymous object. The API exposes every image's `file` URL and `file_size`, so a caller can enumerate and pull the whole corpus without auth.
Reliability	Single origin behind Cloudflare, small operator; no observed rate limiting but no stated durability guarantee.
Parsed numbers	has-free-tier 1

Evidence 3

date	source	what it proved
2026-10-21	neurovault.org/FAQ	purpose and permanence claims, no size cap offered
2026-10-21	neurovault.org/api/images/?format=json&limit=1	probe: GET -> 200, count: 715868, includes file URL and file_size
2026-10-21	neurovault.org/media/images/806/GrandMean.nii.gz	probe: GET -r 0-127 -> 206, Content-Range: bytes 0-127/587261, body starts 1f8b08 (real gzip)

Unknown values 3

per object cap notes: the field may be stated in a source that was not read
per object cap stated: the field may be stated in a source that was not read
retention notes: the field may be stated in a source that was not read