ellmos FileCommander MCP Server

🇩🇪 Deutsche Version

Part of the ellmos-ai family.

Quick Navigation: Tools Overview | System Architecture | Core Capabilities & Safety Invariants | Installation | Configuration | Comparison | Discoverability | Security | Ecosystem | Security Policy | Changelog | llms.txt

A comprehensive Model Context Protocol (MCP) server that gives AI assistants full filesystem access, bounded multi-file content search, process management, interactive shell sessions, and async filename search capabilities.

50 tools in a single server - everything an AI agent needs to interact with the local system.

Discovery keywords: local filesystem MCP server, multi-file content search MCP, safe delete MCP, Recycle Bin MCP server, process management MCP, interactive shell MCP, async file search for AI agents, cloud-lock-safe file operations, Markdown to PDF MCP, OCR MCP server, ZIP archive MCP.

Registry status: published on npm, indexed by jsDelivr, visible on LobeHub, listed on Glama, and prepared for the official MCP Registry via server.json. Some third-party directories still show older 43-tool metadata, so the canonical README/npm metadata should remain the source of truth until their reindex catches up.

[!NOTE] For AI Agents & LLM Integrations: FileCommander provides 50 specialized tools accessible via standard stdio transport. All tool names use the fc_ prefix to prevent namespace collisions. For LLMs, compact context and schema overviews are available in llms.txt and server.json.

Why FileCommander?

Most filesystem MCP servers only cover basic read/write operations. FileCommander goes further:

• Safe Delete - Moves files to Recycle Bin (Windows) or Trash (macOS/Linux) instead of permanent deletion
• Interactive Sessions - Start and interact with REPLs (Python, Node.js, shells) through the MCP protocol
• Async Search - Search large directory trees in the background while the AI continues working
• Explicit Content Search - Search literal text or regex across a bounded list of files without recursion or glob expansion
• Process Management - List, start, and terminate system processes
• String Replace - Edit files by matching unique strings with context validation
• Format Conversion - Convert between JSON, CSV, INI, YAML, TOML, XML, and TOON
• ZIP Archives - Create, extract, and list ZIP archives
• File Checksums - MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashing with compare
• OCR - Extract text from images (optional tesseract.js dependency)
• Safety Mode - Toggle to route all deletes through Recycle Bin / Trash
• Markdown Export - Convert Markdown to professional HTML/PDF with code blocks, tables, nested lists, blockquotes
• Cloud-Lock Safe - Automatic copy+delete fallback when cloud sync filters (OneDrive, Dropbox, Google Drive, iCloud) block rename operations
• Cloud Lock Diagnosis - Check whether a path is at risk of sync-filter conflicts before operating
• Cross-platform - Works on Windows, macOS, and Linux with platform-specific optimizations

System Architecture

flowchart TD
    subgraph Client["MCP Client Layer"]
        Claude["Claude Desktop / Claude Code"]
        Custom["Custom LLM Agents / Frameworks"]
    end

    subgraph Transport["Transport Layer"]
        Stdio["Stdio Transport (JSON-RPC)"]
    end

    subgraph Core["ellmos FileCommander Engine (50 Tools)"]
        FS["Filesystem Engine\n(15 tools: read, bounded preview, write, edit, safe-delete, cloud-lock safe)"]
        Search["Search Engine\n(6 tools: explicit content search plus 5 async filename-search tools)"]
        Proc["Process & REPL Sessions\n(10 tools: exec, default-app opening, background proc, interactive REPLs)"]
        Repair["Repair & Format Converter\n(9 tools: JSON fix, Mojibake fix, duplicates, format convert, checksum)"]
        Export["Export & Web Fetch\n(3 tools: Markdown->HTML/PDF, web_fetch)"]
        Sys["System, Utilities & i18n\n(7 tools: OCR, ZIP, cloud-lock check, safe-mode, time, language set/get)"]
    end

    Client -->|JSON-RPC| Stdio
    Stdio --> Core
    Core --> FS
    Core --> Search
    Core --> Proc
    Core --> Repair
    Core --> Export
    Core --> Sys

sequenceDiagram
    autonumber
    participant AI as AI Assistant (Client)
    participant FC as FileCommander Engine
    participant FS as Host Filesystem
    participant Trash as Recycle Bin / Trash
    participant Cloud as Cloud Sync Filter

    Note over AI,FC: 1. Safe Deletion & Recovery Protection
    AI->>FC: fc_delete_file / fc_safe_delete(targetPath)
    alt Safety Mode Active or fc_safe_delete invoked
        FC->>Trash: Move item to Recycle Bin / Trash
        Trash-->>FC: Moved safely (recoverable)
        FC-->>AI: Success (item preserved in Trash/Recycle Bin)
    else Permanent Unlink requested
        FC->>FS: Direct unlink
        FS-->>FC: Removed permanently
        FC-->>AI: Success
    end

    Note over AI,Cloud: 2. Resilient Cloud-Lock Handling (OneDrive/Dropbox)
    AI->>FC: fc_move(sourcePath, destPath)
    alt Cloud Filter Locks Destination
        FC->>Cloud: Attempt standard rename
        Cloud-->>FC: EPERM / EBUSY (Cloud Filter Error)
        FC->>FS: Fallback: copyFileSync + SHA-256 verify
        FC->>FS: unlinkSync source
        FC-->>AI: Move succeeded via resilient fallback
    else Local Native Filesystem
        FC->>FS: Rename (atomic)
        FS-->>FC: Done
        FC-->>AI: Move succeeded
    end

Core Capabilities & Safety Invariants