# Cubbit

**Canonical:** https://apis.io/providers/cubbit/  
**Website:** https://cubbit.io/  
**APIs profiled:** 1

Cubbit is a European cloud storage provider offering DS3, a sovereign, geo-distributed, S3-compatible object storage platform. DS3 encrypts (AES-256), fragments, and replicates data across multiple user-selected locations using Reed-Solomon erasure coding, delivering geo-resilience and data sovereignty within Europe. It ships in two forms: DS3 Cloud, a ready-to-use managed geo-redundant object store (TBs to PBs), and DS3 Composer, self-hosted software-defined storage you run on your own hardware (200 TB+). The storage plane exposes an AWS S3-compatible API at https://s3.cubbit.eu (region eu-west-1), authenticated with access key / secret key and AWS Signature Version 4, so existing S3 SDKs, the AWS CLI, rclone, Cyberduck, Veeam and other S3 tooling work unchanged. Cubbit is certified to ISO/IEC 27001, 27017, 27018, 9001, 20000-1 and 22301, and is GDPR- and NIS2-aligned with Italian ACN PA Cloud qualification.

## Kin Score — 35.3 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 35.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 71.4 |
| Commercial Clarity | 47.4 |
| Access Clarity | 47.4 |

## Agent readiness — 5.4 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (1)

- **Cubbit DS3 S3-Compatible API** — The AWS S3-compatible object storage API for Cubbit DS3. Supports bucket create/delete/list, object upload/download/copy/delete, multipart upload, object versioning, object lock...

## Security (4)

- **Cubbit Authentication** — awsSigV4 · 1 scheme
- **Cubbit Domain Security** — TLSv1.3 · HSTS · DMARC
- **Cubbit Vulnerability Disclosure** — contact published
- **Cubbit Trust Center** — ISO/IEC 27001:2022, ISO/IEC 27017:2015, ISO/IEC 27018:2019, ISO 9001:2015, ISO/IEC 20000-1:2018, ISO 22301:2019, ACN PA Cloud Qualification, GDPR, NIS2

## Tags

Object Storage, Cloud Storage, S3 Compatible, Storage, Data Sovereignty, Geo-Distributed, Infrastructure, Company

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/cubbit/). Scores are computed from the provider's own public artifacts under a published rubric.