Backblaze B2 MCP Server
Official Backblaze B2 MCP server for buckets, files, keys, Object Lock, and S3 storage.
Install
registry version 0.2.2
npm
npx -y @backblaze-labs/b2-mcpnpm
npx -y @backblaze-labs/b2-mcp@0.2.2
Setup by client
Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.
claude_desktop_config.json
{
"mcpServers": {
"b2-mcp": {
"command": "npx",
"args": [
"-y",
"@backblaze-labs/b2-mcp"
],
"env": {
"B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
"B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
"B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}{
"mcpServers": {
"b2-mcp": {
"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_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}Format verified against the official Claude Desktop docs ↗.
terminal
claude mcp add --env B2_APPLICATION_KEY_ID=<YOUR_B2_APPLICATION_KEY_ID> --env B2_APPLICATION_KEY=<YOUR_B2_APPLICATION_KEY> --env B2_MASTER_KEY_ID=<YOUR_B2_MASTER_KEY_ID> --env B2_MASTER_KEY=<YOUR_B2_MASTER_KEY> b2-mcp -- npx -y @backblaze-labs/b2-mcp
claude mcp add --env B2_APPLICATION_KEY_ID=<YOUR_B2_APPLICATION_KEY_ID> --env B2_APPLICATION_KEY=<YOUR_B2_APPLICATION_KEY> --env B2_MASTER_KEY_ID=<YOUR_B2_MASTER_KEY_ID> --env B2_MASTER_KEY=<YOUR_B2_MASTER_KEY> b2-mcp -- npx -y @backblaze-labs/b2-mcp@0.2.2
Format verified against the official Claude Code docs ↗.
.cursor/mcp.json
{
"mcpServers": {
"b2-mcp": {
"command": "npx",
"args": [
"-y",
"@backblaze-labs/b2-mcp"
],
"env": {
"B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
"B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
"B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}{
"mcpServers": {
"b2-mcp": {
"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_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}Format verified against the official Cursor docs ↗.
.vscode/mcp.json
{
"servers": {
"b2-mcp": {
"command": "npx",
"args": [
"-y",
"@backblaze-labs/b2-mcp"
],
"env": {
"B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
"B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
"B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}{
"servers": {
"b2-mcp": {
"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_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}Format verified against the official VS Code docs ↗.
mcp_config.json
{
"mcpServers": {
"b2-mcp": {
"command": "npx",
"args": [
"-y",
"@backblaze-labs/b2-mcp"
],
"env": {
"B2_APPLICATION_KEY_ID": "<YOUR_B2_APPLICATION_KEY_ID>",
"B2_APPLICATION_KEY": "<YOUR_B2_APPLICATION_KEY>",
"B2_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}{
"mcpServers": {
"b2-mcp": {
"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_MASTER_KEY_ID": "<YOUR_B2_MASTER_KEY_ID>",
"B2_MASTER_KEY": "<YOUR_B2_MASTER_KEY>"
}
}
}
}Format verified against the official Windsurf docs ↗.
Environment variables
Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.
B2_APPLICATION_KEY_IDrequired secret — Backblaze B2 application key ID for native B2 and S3-compatible tools.B2_APPLICATION_KEYrequired secret — Backblaze B2 application key secret.B2_REGION— Optional fallback S3-compatible region used before authorization.B2_MASTER_KEY_IDsecret — Optional master key ID for Partner/Groups API tools.B2_MASTER_KEYsecret — Optional master key secret for Partner/Groups API tools.
GitHub
⭐ 44 stars · 最近更新于 16 天前 · MIT license
About this server
Distributed as npm, listed under Files & Storage. Review our MCP security guide before granting access to real data.
Frequently asked questions
How do I install Backblaze B2 MCP Server?
Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.
Is Backblaze B2 MCP Server free to use?
The MCP server itself is free to install. The source is public on https://github.com/backblaze-labs/b2-mcp. Any third-party service it calls may require its own API key and account.
Which clients support Backblaze B2 MCP Server?
Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.
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