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Readme

@crabtransfer/mcp

MCP server for CrabTransfer — file uploads for AI agents with local filePath support.

Note: This is currently a test version. Full launch coming soon.

Quick Start

Get an API key at crabtransfer.com/dashboard
Add to your MCP config (e.g. ~/.cursor/mcp.json):

{
  "mcpServers": {
    "crabtransfer": {
      "command": "npx",
      "args": ["-y", "@crabtransfer/mcp"],
      "env": {
        "CRABTRANSFER_API_KEY": "your-api-key-here"
      }
    }
  }
}

Restart your MCP client (Cursor, Claude Desktop, etc.)

Supported Clients

Any MCP client that supports stdio transport:

Available Tools

Tool	Description
`upload_and_wait`	Upload a file and wait for a shareable download link
`upload_file`	Upload a file (returns upload ID for status polling)
`upload_from_url`	Upload a file from a public URL
`get_upload_status`	Check the status of an upload
`get_download_url`	Get the download URL for a completed upload

Upload Methods

Each upload tool supports three mutually exclusive input methods:

filePath — Local file path (stdio only, most efficient for local files)
url — Public URL for the server to fetch
content — Base64-encoded file content

Environment Variables

Variable	Required	Default	Description
`CRABTRANSFER_API_KEY`	Yes	—	Your CrabTransfer API key
`CRABTRANSFER_API_BASE_URL`	No	`https://crabtransfer-api-develop.fly.dev`	API base URL

CLI

npx @crabtransfer/mcp --help
npx @crabtransfer/mcp --version

License

MIT