Materials Cloud
materialscloud.org · 2 records in Storage · JSON
Records 2
- caveatMaterials Cloud Archive (EPFL / NCCR MARVEL)
Storagefree tieridentity anonymous?card?limit per-object-capevidence reportedstale on 2026-11-05disagrees
- fails: quotamaterials cloud archive
Storageidentity email?card?evidence reportedstale on 2026-11-05disagrees
Sibling records disagree:
- identity_kind:
storage/materials-cloud-archivesays anonymous, storage/materials-cloud-archive-2 says email - verdict:
storage/materials-cloud-archivesays qualifies-with-caveat, storage/materials-cloud-archive-2 says fails-quota
- Free allowance
- Per-record, not per-account: '5 GB for general materials science research data, 50 GB for AiiDA databases.
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- anonymous?placeholder, not evidence; card unknown, phone unknown
- Binding limit
- per-object-capPer-object-cap 5 GB
- 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 | Per-record, not per-account: '5 GB for general materials science research data, 50 GB for AiiDA databases. For larger datasets please contact us.' Records are unlimited and each gets a DOI, so this is a per-record-unlimited pattern rather than a 500 GB single-shot store. unit GB; metered on stored-bytes |
|---|---|
| Price | none stated |
| Limits |
Per-object-cap 5 GB / 50 GB per record; moderation gate ('Once you submit your record for publication it will be reviewed by the Materials Cloud moderators'), scope-gated to computational materials science, and moderators explicitly police 'excessive submission rate'. |
| Identity | anonymous (inferred, not read) not published |
| Egress | Free, and unusually well-instrumented: 'Access to metadata and data files is provided over standard protocols such as HTTP and OAI-PMH.' No metering. Probe: GET /record/2026.196 -> 200, 90,945 bytes of record page. |
| Per-object cap | Per-object-cap 5 GB (5000000000 bytes) |
| Retention | not stated |
| Interface | rest rest |
| Tooling | Email self-registration with a personal work area; HTTP + OAI-PMH read; DOI minting per record; versioning of published records. AiiDA provenance integration is the native client for the 50 GB tier. |
| Composes with | Unlimited records x 5 GB (or 50 GB for AiiDA databases). 100 records at 5 GB = 500 GB; the 50 GB AiiDA tier halves that to 10 records. |
| Reliability | EPFL-hosted and stable, but moderation is substantive (refereeable-quality requirement) and rate-policed — the opposite of an anonymous dump. Data survives; throughput is editorially throttled. |
| Parsed numbers |
|
Evidence 3
| date | source | what it proved |
|---|---|---|
| 2026-10-21 | archive.materialscloud.org/information | 'Volume and size limitations: 5 GB for general materials science research data, 50 GB for AiiDA databases. For larger datasets please contact us' |
| 2026-10-21 | archive.materialscloud.org/help | 'By registering with your email to the Materials Cloud Archive...' (open self-registration), moderated before publication |
| 2026-10-21 | source not published | probe: GET /record/2026.196 -> 200 (90,945 bytes); 1,551 published records live |
Unknown values 3
- per object cap notes: 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
- retention stated: the field may be stated in a source that was not read
materials cloud archive
StorageSibling records disagree:
- identity_kind:
storage/materials-cloud-archivesays anonymous, storage/materials-cloud-archive-2 says email - verdict:
storage/materials-cloud-archivesays qualifies-with-caveat, storage/materials-cloud-archive-2 says fails-quota
- Free allowance
- InvenioRDM node with a hard login wall before any upload; publishing is tied to a Materials Cloud workflow rather than open deposit.
- Verdict
- fails: quotathe free allowance is too small to matter
- Cost
- not stated
- Identity
- email?placeholder, not evidence; card unknown, phone unknown
- Binding limit
- noneno named constraint binds
- Evidence
- reported2 sources; a third party said so
- Freshness
- stale on 2026-11-05checked 2026-10-21 (inherited); stale on 2026-11-05
| Free tier | InvenioRDM node with a hard login wall before any upload; publishing is tied to a Materials Cloud workflow rather than open deposit. unit none; metered on none |
|---|---|
| Price | none stated |
| Identity | email (placeholder) not published |
| Egress | not recorded |
| Interface | unknown |
| Tooling | not recorded |
Evidence 2
| date | source | what it proved |
|---|---|---|
| 2026-10-21 | archive.materialscloud.org/uploads/new | the text of Free tier, above |
| 2026-10-21 | archive.materialscloud.org/api/records?size=1 | cited as the basis of the rejection: InvenioRDM node with a hard login wall before any upload; publishing is tied to a Materials Cloud workflow rather than open deposit. |
More fields 1
| dead end | {"failure_class": "quota","why": "InvenioRDM node with a hard login wall before any upload; publishing is tied to a Materials Cloud workflow rather than open deposit.","retry_when": null,"first_recorded": "2026-10-21"} |
|---|
Unknown values 7
- chaining: no value was recorded for this field
- egress terms: no value was recorded for this field
- interface: the access interface was not established
- per object cap notes: no value was recorded for this field
- per object cap stated: no value was recorded for this field
- retention stated: no value was recorded for this field
- tooling: no value was recorded for this field