Connect an agent, bring your files,
get answers you can check.
Fastio is cloud storage your agents can reach. Connect the assistant you already use, move the files you already have, and start asking questions about them.
Connect the agent you already use.
Claude Desktop, ChatGPT, Cursor, or any MCP client. Paste one config block, or install the CLI and let it run as a local MCP server. Your agent gets a set of tools for reading, writing, searching, and sharing files in the workspaces you allow.
{
"mcpServers": {
"fastio": {
"url": "https://mcp.fast.io/mcp/oauth"
}
}
}Legacy SSE: https://mcp.fast.io/sse for clients that still require SSE
Bring in the files you already have.
Three ways in, and you can use all three. Nothing has to be reorganized first.
Cloud Sync + Import
Keep a folder from Dropbox, Box, or OneDrive in sync, one-way or two-way, on a schedule or on demand. Or import once from any provider or public URL, folder structure intact. Google Drive imports today, sync coming soon.
How Cloud Sync and Import workDesktop Sync
The Mac app keeps a folder on your computer and a workspace in Fastio in step, both ways. Mac today, Windows coming soon.
Get the desktop appStraight upload
Drag files into a workspace in the browser, or let your agent write its own output into one as it works.
Ask questions, and see where answers came from.
Your files stop being a folder tree your agent has to guess at, and start being something it can read, cite, and pull data out of.
Answers with sources
Ask a question about a workspace and get an answer that names the files it came from, so you can open them and check.
Fields you choose
Pick a set of files and pull typed fields out of them: parties, dates, amounts, terms. You preview and approve before anything is saved.
Findable content
Files are indexed for search and answers, so your agent works from what is actually in the documents, not just their names.
One client folder in, diligence questions answered.
A three-person consultancy takes on a diligence review. Here are the same three steps, on a real pile of client documents.
The agent gets connected
The lead consultant adds Fastio to the assistant she already works in. Her two colleagues do the same in their own clients.
The client folder comes in
Two years of the client's contracts and board minutes transfer over from their cloud storage, folders intact. A few scanned PDFs go up from a laptop.
The questions get answered
Diligence starts. The team asks in plain language and reads answers that point back at the exact documents.
Which of this client's customer contracts renew automatically next year, and who signed them?
Four contracts renew automatically in 2027. Three were signed by the client's COO, and one by a regional director whose signing authority is capped below the contract value.
Illustrative example. Names and documents are made up.
You decide what your agent can reach.
Agents get access the same way people do, and everything they touch is on the record.
Five permission levels
Owner, Admin, Member, Guest, and View. People and agents use the same model, so access is one decision, not two.
Scoped agent tokens
Every agent connects with a token scoped to the workspaces you grant. It cannot reach anything you did not hand it.
A complete activity log
Every action by a person or an agent is recorded: what was read, what was added, what was shared, and when.
Encrypted, on certified infrastructure
Files are encrypted at rest and in transit, on infrastructure partners certified to industry-leading standards.
Put your files to work.
Connect your agent, bring a folder in, and ask it something.