Cloud Fs MCP Server

@nogoo9/mcp-server-cloud-fs

Drop-in cloud replacement for mcp-server-filesystem — all 14 MCP tools, same schema, backed by S3, Azure Blob, or GCS.

What it does

@nogoo9/mcp-server-cloud-fs exposes all 14 tools defined by mcp-server-filesystem — same tool names, same parameter schemas — over cloud object storage. Drop it into any MCP client config that currently points at mcp-server-filesystem and your AI assistant gains read/write access to S3, Azure Blob Storage, or Google Cloud Storage buckets.

Quick start

npx @nogoo9/mcp-server-cloud-fs s3 s3://my-bucket

CLI reference

cloud-fs-mcp <provider> <root-uri> [root-uri...] [options]

Providers:   s3 | azure | gcs

Options:
  --region <region>                 Cloud region (S3, GCS)
  --endpoint <url>                  Custom endpoint for S3-compatible backends (MinIO, RustFS)
  --cache-store <memory|fs|redis>   Cache backend (default: memory)
  --cache-ttl <seconds>             Cache TTL in seconds (default: 60)
  --sync-debounce <ms>              Write flush delay in ms (default: 2000)
  --cache-dir <path>                Directory for fs cache store
  --no-cache                        Bypass cache entirely (pass-through mode)

Credentials are always sourced from SDK credential chains — never CLI flags.

Provider setup

AWS S3

Credentials are read from the standard AWS credential chain: AWS_ACCESS_KEY_ID / AWS_SECRET_ACCESS_KEY env vars, ~/.aws/credentials, EC2 instance profiles, and so on.

cloud-fs-mcp s3 s3://my-bucket --region us-east-1

S3-compatible (MinIO, RustFS)

Pass --endpoint to target any S3-compatible backend:

export AWS_ACCESS_KEY_ID=minioadmin
export AWS_SECRET_ACCESS_KEY=minioadmin
cloud-fs-mcp s3 s3://my-bucket --endpoint http://minio:9000 --region us-east-1

Azure Blob Storage

Uses DefaultAzureCredential — works with AZURE_TENANT_ID / AZURE_CLIENT_ID / AZURE_CLIENT_SECRET env vars, managed identity, az login, and so on.

cloud-fs-mcp azure az://my-container

Google Cloud Storage

Uses Application Default Credentials (ADC). Set GOOGLE_APPLICATION_CREDENTIALS or run gcloud auth application-default login.

cloud-fs-mcp gcs gs://my-bucket

MCP client config

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "cloud-fs": {
      "command": "npx",
      "args": ["-y", "@nogoo9/mcp-server-cloud-fs", "s3", "s3://my-bucket"]
    }
  }
}

Claude Code

.mcp.json in your project root:

{
  "mcpServers": {
    "cloud-fs": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@nogoo9/mcp-server-cloud-fs", "s3", "s3://my-bucket"]
    }
  }
}

Caching

All reads and writes are routed through a transparent cache layer to reduce round-trips to cloud storage.

Write debounce: Writes land in cache immediately and are flushed to the provider after --sync-debounce ms (default: 2000). On SIGTERM/SIGINT the buffer is synchronously flushed before exit.

Disable caching: Pass --no-cache for pass-through mode — every read and write goes directly to the provider.

License

PolyForm Shield 1.0.0. Free for any non-competitive use.