Koskamo

Backblaze B2 MCP Server

A Model Context Protocol server for Backblaze B2 Cloud Storage that lets any MCP-compatible AI client operate B2 through a focused, safe set of 40 tools. It supports native B2 SDK operations like buckets and keys, S3-compatible data plane actions, and repository-owned analytics over B2 reports.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Backblaze B2 MCP Server logo, by BackblazeCommunity listingLocal stdioSource reviewed; not executedPublished by Backblaze
You need:A supported Node.js runtime and a Backblaze B2 application key
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 46 GitHub stars

What you can do with it

  • Manage B2 buckets and application keys
  • Upload, download, and list objects via S3-compatible API
  • Monitor storage growth and egress analytics

Source and maintenance

Community listingRegistry 0.2.2MIT
mcp-registry: io.github.backblaze-labs/b2-mcp@0.2.2Source repositoryProject website
Last repository push
Latest release
v0.2.2
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@backblaze-labs/b2-mcp 0.2.2

npm
@backblaze-labs/b2-mcp package definition
{
  "version": "0.2.2",
  "transport": "stdio",
  "identifier": "@backblaze-labs/b2-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "B2_APPLICATION_KEY_ID",
      "format": "string",
      "isRequired": true,
      "description": "Backblaze B2 application key ID for native B2 and S3-compatible tools."
    },
    {
      "name": "B2_APPLICATION_KEY",
      "format": "string",
      "isRequired": true,
      "description": "Backblaze B2 application key secret."
    },
    {
      "name": "B2_REGION",
      "format": "string",
      "description": "Optional fallback S3-compatible region used before authorization.",
      "placeholder": "us-east-005"
    },
    {
      "name": "B2_MASTER_KEY_ID",
      "format": "string",
      "description": "Optional master key ID for Partner/Groups API tools."
    },
    {
      "name": "B2_MASTER_KEY",
      "format": "string",
      "description": "Optional master key secret for Partner/Groups API tools."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "backblaze-b2-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@backblaze-labs/b2-mcp@0.2.2"
      ],
      "env": {
        "B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
        "B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
        "B2_REGION": "<YOUR_B2_REGION>",
        "B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
        "B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "backblaze-b2-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@backblaze-labs/b2-mcp@0.2.2"
      ],
      "env": {
        "B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
        "B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
        "B2_REGION": "<YOUR_B2_REGION>",
        "B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
        "B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "backblaze-b2-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@backblaze-labs/b2-mcp@0.2.2"
      ],
      "env": {
        "B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
        "B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
        "B2_REGION": "<YOUR_B2_REGION>",
        "B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
        "B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "backblaze-b2-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@backblaze-labs/b2-mcp@0.2.2"
      ],
      "env": {
        "B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
        "B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
        "B2_REGION": "<YOUR_B2_REGION>",
        "B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
        "B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
      }
    }
  }
}

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