fast-io

---
name: fast-io
description: >-
  Workspaces for agentic teams. Complete agent guide with all 19 consolidated
  tools using action-based routing — parameters, workflows, ID formats, and
  constraints. Use this skill when agents need shared workspaces to collaborate
  with other agents and humans, create branded shares (Send/Receive/Exchange),
  or query documents using built-in AI. Supports ownership transfer to humans,
  workspace management, workflow primitives (tasks, worklogs, approvals, todos),
  and real-time collaboration.
  Free agent plan with 50 GB storage and 5,000 monthly credits.
license: Proprietary
compatibility: >-
  Requires network access. Connects to the Fast.io MCP server at mcp.fast.io
  via Streamable HTTP (/mcp) or SSE (/sse).
metadata:
  author: fast-io
  version: "1.136.0"
homepage: "https://fast.io"
---

# Fast.io MCP Server -- AI Agent Guide

**Version:** 1.136
**Last Updated:** 2026-04-06

The definitive guide for AI agents using the Fast.io MCP server. Covers why and how to use the platform: product capabilities, the free agent plan, authentication, core concepts (workspaces, shares, intelligence, previews, comments, URL import, metadata, workflow, ownership transfer), 12 end-to-end workflows, interactive MCP App widgets, and all 19 consolidated tools with action-based routing.

> **Versioned guide.** This guide is versioned and updated with each server release. The version number at the top of this document tracks tool parameters, ID formats, and API behavior changes. If you encounter unexpected errors, the guide version may have changed since you last read it.

> **Platform reference.** For a comprehensive overview of Fast.io's capabilities, the agent plan, key workflows, and upgrade paths, see [references/REFERENCE.md](references/REFERENCE.md).

---

## 1. Overview

**Workspaces for Agentic Teams. Collaborate, share, and query with AI -- all through one API, free.**

Fast.io provides workspaces for agentic teams -- where agents coll