# MinIO

**Canonical:** https://apis.io/providers/minio/  
**Website:** https://min.io/docs  
**APIs profiled:** 2

MinIO is a high-performance, S3-compatible object storage system built for large-scale AI, analytics, and cloud-native data infrastructure. Its API is a drop-in implementation of the Amazon S3 REST API (bucket and object operations, multipart uploads, versioning, object locking / WORM retention, lifecycle policies, replication, and encryption), authenticated with AWS Signature Version 4 using access-key/secret-key pairs. Alongside the S3 data API, MinIO ships an Admin API (madmin) for cluster, user, policy, and service management. It is distributed as open-source software and as the commercial AIStor product, deployed on Kubernetes via an operator and Helm charts, and driven through first-party SDKs for Go, Python, Java, JavaScript, .NET, C++, and Rust plus the `mc` command-line client.

## Kin Score — 55.3 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 55.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 51.6 |
| Governance | 12.5 |
| Operational Transparency | 39.5 |
| Developer Ergonomics | 80.4 |
| Commercial Clarity | 60.5 |

## Agent readiness — 45.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (2)

- **MinIO S3-Compatible API** — S3-compatible object storage REST API implementing Amazon S3 bucket and object operations (put/get/list/delete objects, multipart uploads, versioning, object locking, lifecycle,...
- **MinIO Admin API** — Administrative API (madmin) for managing MinIO/AIStor clusters: users, groups, canned and IAM policies, service accounts, healing, cluster info, configuration, and service restart.

## MCP servers (1)

- **minio-mcp.yml**

## Security (4)

- **Minio Authentication** — signature-v4/sts/ldap/oidc · 4 schemes
- **Minio Domain Security** — TLSv1.3 · DNSSEC · DMARC
- **Minio Vulnerability Disclosure** — contact published
- **Minio Trust Center** — ISO 27001

## Tags

Object Storage, Storage, S3 Compatible, Cloud Native, Kubernetes, Data Infrastructure, AI Storage, Company

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