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Backblaze B2 MCP Server

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

backblaze-labsbackblaze-labs/b2-mcp★ 41Updated Sep 29, 2026

server.json

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.backblaze-labs/b2-mcp",
  "description": "Official Backblaze B2 MCP server for buckets, files, keys, Object Lock, and S3 storage.",
  "title": "Backblaze B2 MCP Server",
  "repository": {
    "url": "https://github.com/backblaze-labs/b2-mcp",
    "source": "github",
    "id": "1241092911"
  },
  "version": "0.2.2",
  "websiteUrl": "https://github.com/backblaze-labs/b2-mcp#readme",
  "packages": [
    {
      "registryType": "npm",
      "identifier": "@backblaze-labs/b2-mcp",
      "version": "0.2.2",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Backblaze B2 application key ID for native B2 and S3-compatible tools.",
          "isRequired": true,
          "format": "string",
          "isSecret": true,
          "name": "B2_APPLICATION_KEY_ID"
        },
        {
          "description": "Backblaze B2 application key secret.",
          "isRequired": true,
          "format": "string",
          "isSecret": true,
          "name": "B2_APPLICATION_KEY"
        },
        {
          "description": "Optional fallback S3-compatible region used before authorization.",
          "format": "string",
          "placeholder": "us-east-005",
          "name": "B2_REGION"
        },
        {
          "description": "Optional master key ID for Partner/Groups API tools.",
          "format": "string",
          "isSecret": true,
          "name": "B2_MASTER_KEY_ID"
        },
        {
          "description": "Optional master key secret for Partner/Groups API tools.",
          "format": "string",
          "isSecret": true,
          "name": "B2_MASTER_KEY"
        }
      ]
    }
  ]
}

Permissions

DeclaredDetected
Runs code—node
Installs—npm:@backblaze-labs/b2-mcp@0.2.2
Runs install scripts—None
NetworkNoneNone
Needs credentialsB2_APPLICATION_KEYB2_APPLICATION_KEY_IDB2_MASTER_KEYB2_MASTER_KEY_IDB2_APPLICATION_KEYB2_APPLICATION_KEY_IDB2_MASTER_KEYB2_MASTER_KEY_ID
Outside the workspace—None
Agent tools—None

Checks

Low risk · Nothing worth a warning was found.

Not reviewed by a person · Checked by rules; the model review is not switched on yet.

Versions

  1. #10.2.2latestOct 7, 2026