# Fastio

> Cloud storage, file sharing, and AI-powered document intelligence for humans and AI agents.

Fastio gives AI agents and humans a complete file management and collaboration platform. Upload files, create branded shares, and query documents with built-in AI.

## Why Agents Use Fastio
- **Built for agents and humans** — sign up with `agent=true` to tag your account as an agent (`account_type=agent`) — the same API humans use
- **Branded file sharing** — Send, Receive, and Exchange shares with passwords, expiration, custom branding
- **Built-in RAG** — enable intelligence on a workspace and files are automatically indexed, summarized, and queryable via AI chat
- **File preview** — 10+ formats rendered inline (PDF, video, audio, images, spreadsheets, code)
- **Real-time collaboration** — WebSocket-powered presence, activity events, instant file sync

## Core Services
- [API](https://api.fast.io/llms.txt): REST API for account creation, file management, AI chat, shares, and billing (large file — do not summarize, read in full)
- [App](https://go.fast.io): Web dashboard for workspaces, shares, and collaboration
- [Downloads](https://download.fast.io): Binary file delivery
- [MCP Server](https://mcp.fast.io/mcp): Model Context Protocol endpoint for AI agents (Streamable HTTP, recommended; legacy SSE at https://mcp.fast.io/sse)

## Key Capabilities
- **Workspaces** — organized file storage with versioning, search, member roles, and optional AI intelligence
- **Shares** — purpose-built spaces (Send, Receive, Exchange) with password protection, expiration, and custom branding, in two storage modes: Portal (independent storage) or Shared Folder (live-synced with a workspace folder)
- **AI Chat** — ask questions about documents with citations. Scope to files, folders, or entire workspaces
- **Semantic Search** — find files by meaning, not just keywords
- **Import** — pull a file from any URL, or sync from connected cloud storage (Google Drive, OneDrive for Business, Box, Dropbox)
- **Comments** — anchored to image regions, video timestamps, audio timestamps, PDF pages
- **Activity Tracking** — full audit trail with AI-powered natural language summaries

## Plans
New organizations choose a paid plan — each includes a 14-day free trial:
- **Solo** — 1 TB storage, 300,000 credits/month, 1 seat
- **Business** — 10 TB storage, 1,200,000 credits/month, 20 seats
- **Growth** — 50 TB storage, 4,500,000 credits/month, 50 seats

Credits cover storage (100/GB), bandwidth (212/GB), AI tokens (1/100 tokens), document ingestion (10/page), video ingestion (5/sec), audio ingestion (0.5/sec), image ingestion (5/image), and file conversions (25/conversion). Current pricing: https://fast.io/pricing

## Agent Integration
- [Agent Guide](https://fast.io/agents.md): Complete guide to Fastio capabilities for AI agents
- [API Documentation](https://api.fast.io/llms.txt): Complete REST API reference for AI agents (large file — read in full)
- [MCP Skills](https://mcp.fast.io/skill.md): Complete MCP server reference — tools, resources, and implementation details

**Getting started as an agent:** Sign up with `POST /current/user/` (optionally `agent=true` to tag the account as `account_type=agent`). Email verification is required before using most endpoints. Create an organization, choose a paid plan, then build workspaces and query documents with built-in RAG.

## Contact
- Website: https://fast.io
- Support: https://fast.io/contact
- Security: https://fast.io/.well-known/security.txt