Open-source MinIO MCP alternatives
MinIO's server is open source, so you can read what it does to your buckets before granting access, browse and read objects, write them, manage tags and versioning, even ask AI questions about stored content. If publishing source is your bar, every option below ships its code too, which matters when you need to vet exactly what an agent can touch in a file store.
These are the open-source servers people line up against MinIO, spanning self-hosted file platforms, cloud drives whose servers are public, a hyperscaler CLI, and a couple of adjacent stores. Most also let you pin the version you trust.
The 8 best open-source alternatives
Open source and self-hosted, the Nextcloud community server covers files, notes, calendar, contacts, tables, and more across 110-plus tools. You can read the repo and keep the whole platform on your own infrastructure, the closest match to MinIO's posture.
Set up Nextcloud →- BoxOfficial
Box's server is open source but hosted: it searches, reads, organizes, and runs Box AI over enterprise content via OAuth. You can audit the code even though Box operates the endpoint.
Set up Box → - Google Drive (Workspace MCP)Community
The open-source Workspace MCP scoped to Drive searches, reads, creates, and shares Drive files over OAuth and imports to Docs, Slides, and Sheets. Reading its source shows exactly which Drive scopes it uses.
Set up Google Drive (Workspace MCP) → AWS Labs publishes its server, which runs any AWS CLI command with validation and a read-only mode. The open source lets you confirm the guardrails before letting an agent touch S3 and other services.
Set up AWS (AWS Labs) →Adjacent rather than file storage, Notion's open-source server searches, reads, and writes across a workspace over OAuth. It fits when your content is structured pages instead of objects, and its code is public to inspect.
Set up Notion →Cloudflare's open-source remote servers build and manage Workers, KV, R2, D1, and Hyperdrive. R2 is the S3-style store, and the published code lets you see how the agent reaches it.
Set up Cloudflare →The community Slack server is open source and reads history, DMs, and search without a workspace bot. Reach for it only when the content lives in chat, and read the repo before wiring it in.
Set up Slack →Furthest from storage, Doist's open-source Todoist server creates, finds, updates, and completes tasks, projects, labels, and reminders. It is here as an inspectable task tool, not a file store.
Set up Todoist →
How to choose
Every server here publishes its code, so the choice is about what each one actually stores and where it runs. Nextcloud is the closest to MinIO: open source, self-hosted, file-centric. Cloudflare R2 and the AWS CLI reach S3-style object storage with auditable code. Box and Google Drive are open-source servers for managed cloud drives, while Notion, Slack, and Todoist are adjacent stores for pages, chat, and tasks. Whichever you pick, read the repo before you grant write access to a file store.
FAQ
- Is the MinIO MCP server open source?
- Yes. MinIO publishes its server, so you can read exactly how it browses buckets, reads and writes objects, and manages versioning before granting access. Every alternative on this page also ships its source.
- Why choose an open-source storage MCP server?
- You can audit which object and file operations the server is able to perform, pin or patch the version you run, and for self-hosted ones keep credentials on infrastructure you control. The trade-off is operating it yourself rather than relying on a vendor for hosted options.