Backblaze B2 MCP Server: Safe Cloud Storage for AI Agents

This post introduces the Backblaze B2 MCP Server, an open-source tool that enables AI agents to interact with Backblaze B2 Cloud Storage via the Model Context Protocol (MCP). It details how the server applies MCP to B2, ensuring that agent tool access is constrained by the permissions of the connected B2 application key. The post highlights the server's capabilities for managing storage (buckets, objects, lifecycle rules, retention, Object Lock), moving large files directly via short-lived URLs or multipart transfers, limiting access through scoped application keys, gating destructive actions (requiring confirmation or blocking), and inspecting storage usage (growth, egress, large files, unfinished multipart uploads). It also provides installation instructions for Claude Desktop and general usage with npx, emphasizing the importance of using non-master, scoped application keys for security.