OpenIO

OpenIO SDS is an open-source, software-defined object storage platform for building hyper-scalable, high-performance storage infrastructures. It stores data across commodity hardware and exposes it through an Amazon S3-compatible gateway and an OpenStack Swift-compatible gateway, backed by native RAWX, Conscience, Directory, Container, Content and Account services. Developers integrate via first-party Python, C and Java client libraries and the `openio` command-line interface, or with any standard AWS S3 / Swift SDK and CLI. The S3 gateway supports Signature v2/v4, versioning, lifecycle, CORS, tagging, ACLs and multipart uploads, plus a documented subset of AWS IAM (paid plans). OpenIO was founded as a French storage company backed by Partech and acquired by OVHcloud in 2020; the SDS project remains publicly documented open source.

OpenIO publishes 1 API on the APIs.io network. Tagged areas include Company, Infrastructure Saas, Object Storage, S3, and Cloud Storage.

OpenIO’s developer surface includes documentation, API reference, getting-started guide, authentication, CLI, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
18.7/100 emerging ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
1 APIs
CompanyInfrastructure SaasObject StorageS3Cloud StorageOpen SourceOpenStack SwiftStorage

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 18.7/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 10.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 8.0 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/openio: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

OpenIO SDS S3-Compatible Object Storage API

Amazon S3-compatible object storage gateway exposed by OpenIO SDS, with an OpenStack Swift-compatible gateway alongside. Self-hosted software, so the API base URL is deployment-...

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Openio Authentication

awsSignature/swiftAuth · 2 schemes

SECURITY

Openio Domain Security

no transport/DNS hardening detected

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle
 Conventions
Conventions

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 CLI
CLI
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: openio
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/openio.png
name: OpenIO
description: OpenIO SDS is an open-source, software-defined object storage platform for building hyper-scalable, high-performance
  storage infrastructures. It stores data across commodity hardware and exposes it through an Amazon S3-compatible gateway
  and an OpenStack Swift-compatible gateway, backed by native RAWX, Conscience, Directory, Container, Content and Account
  services. Developers integrate via first-party Python, C and Java client libraries and the `openio` command-line interface,
  or with any standard AWS S3 / Swift SDK and CLI. The S3 gateway supports Signature v2/v4, versioning, lifecycle, CORS, tagging,
  ACLs and multipart uploads, plus a documented subset of AWS IAM (paid plans). OpenIO was founded as a French storage company
  backed by Partech and acquired by OVHcloud in 2020; the SDS project remains publicly documented open source.
url: https://raw.githubusercontent.com/api-evangelist/openio/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- partech
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Infrastructure Saas
- Object Storage
- S3
- Cloud Storage
- Open Source
- OpenStack Swift
- Storage
apis:
- name: OpenIO SDS S3-Compatible Object Storage API
  description: Amazon S3-compatible object storage gateway exposed by OpenIO SDS, with an OpenStack Swift-compatible gateway
    alongside. Self-hosted software, so the API base URL is deployment-specific.
  humanURL: https://docs.openio.io/latest/source/arch-design/s3_compliancy.html
  tags:
  - Object Storage
  - S3
  - Swift
  properties:
  - type: Documentation
    url: https://docs.openio.io/latest/
  - type: APIReference
    url: https://docs.openio.io/latest/source/arch-design/s3_compliancy.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.openio.io/
- type: Documentation
  url: https://docs.openio.io/latest/
- type: APIReference
  url: https://docs.openio.io/latest/source/arch-design/s3_compliancy.html
- type: GettingStarted
  url: https://docs.openio.io/latest/
- type: GitHubOrganization
  url: https://github.com/open-io
- type: Authentication
  url: authentication/openio-authentication.yml
- type: Conformance
  url: conformance/openio-conformance.yml
- type: CLI
  url: cli/openio-cli.yml
- type: Packages
  url: packages/openio-packages.yml
- type: SDKs
  url: packages/openio-packages.yml
- type: Lifecycle
  url: lifecycle/openio-lifecycle.yml
- type: Conventions
  url: conventions/openio-conventions.yml
- type: LLMsTxt
  url: llms/openio-llms.txt
- type: DomainSecurity
  url: security/openio-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 9
  pass: local-v1