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Backblaze B2 MCP Server

Official Backblaze B2 MCP server for buckets, files, keys, Object Lock, and S3 storage.

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★ 36 stars Last pushed 2026-09-20 License: MIT

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Review any command before running it. Package names and URLs come from the server's own registry entry.

Package (npm 0.2.1)

npx -y @backblaze-labs/b2-mcp@0.2.1

Or add to your MCP client config:

{
  "mcpServers": {
    "b2-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@backblaze-labs/b2-mcp@0.2.1"
      ],
      "env": {
        "B2_APPLICATION_KEY_ID": "<YOUR_VALUE>",
        "B2_APPLICATION_KEY": "<YOUR_VALUE>",
        "B2_REGION": "<YOUR_VALUE>",
        "B2_MASTER_KEY_ID": "<YOUR_VALUE>",
        "B2_MASTER_KEY": "<YOUR_VALUE>"
      }
    }
  }
}

B2_APPLICATION_KEY_ID required secret — Backblaze B2 application key ID for native B2 and S3-compatible tools.
B2_APPLICATION_KEY required secret — Backblaze B2 application key secret.
B2_REGION — Optional fallback S3-compatible region used before authorization.
B2_MASTER_KEY_ID secret — Optional master key ID for Partner/Groups API tools.
B2_MASTER_KEY secret — Optional master key secret for Partner/Groups API tools.