Fastio MCP MCP server

Fastio's official hosted MCP server enables AI agents to interact with Fastio workspaces, files, shares, and metadata. It supports reading, searching, uploading, organizing folders, managing shares, comments, and members, as well as e-signature requests and AI chat integration, all secured via OAuth 2.0 without handling passwords or billing.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by Fastio

MCP endpoint (Streamable HTTP)

https://mcp.fast.io/mcp/tools

Vendor documentation

What you can do with it

Search and summarize files across workspaces
Upload and organize files and folders
Manage shares, comments, and workspace members
Send and track e-signature requests

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http fastio-mcp https://mcp.fast.io/mcp/tools

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add fastio-mcp --url https://mcp.fast.io/mcp/tools

Cursor

Merge this server into .cursor/mcp.json in your project, then enable fastio-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "fastio-mcp": {
      "url": "https://mcp.fast.io/mcp/tools"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "fastio-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.fast.io/mcp/tools",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start fastio-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "fastio-mcp": {
      "type": "http",
      "url": "https://mcp.fast.io/mcp/tools"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http fastio-mcp https://mcp.fast.io/mcp/tools

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "fastio-mcp": {
      "url": "https://mcp.fast.io/mcp/tools"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "fastio-mcp": {
      "serverUrl": "https://mcp.fast.io/mcp/tools"
    }
  }
}

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