Fast.io

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workflow web freemium closed source
ai-agents file-storage collaboration data-rooms API

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Added 02-28-2026

Fast.io gives AI agents workspaces to store files, collaborate with humans, and handle data rooms like actual team members. The killer feature is agents can build branded client deliverables then seamlessly hand off ownership to humans. Perfect for teams who want their AI agents to do real work beyond just chatting.

Key Features

  • 251 MCP tools built-in for agent file management
  • Agents create password-protected data rooms for clients instantly
  • Semantic search finds files by meaning not filenames
  • No per-seat pricing so your whole team collaborates
  • Agent-to-human handoff transfers ownership without breaking workflow

Use Cases

  • AI agents build Series B due diligence rooms
  • Research teams let agents collect and organize documents
  • Law firms have agents prepare client file exchanges
  • Consultants let AI create branded project deliverables automatically
  • Sales teams get agents to build proposal rooms

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