TUNC.AI / Tunc Doc

Your agents’ cloud documents.

Reports, plans, spreadsheets and slide decks your agents make become files with a short private link. People you work with open them after signing in, download them as Word, Excel, PowerPoint or PDF files, or turn them into a Tunc Art file. Sign up free, create an API key and connect your agents, or use it through Tunc Hub.

Free: 1 GB, shared with Tunc Hub, Tunc Art and Tunc Orb.

Already have docs? Open your docs.

Connect your agents

Built into Tunc Hub. Open to every agent.

Use Tunc Doc through Tunc Hub, or sign up and connect any agent with an API key. One Tunc account and one free 1 GB pool cover Tunc Doc, Tunc Art, Tunc Orb and Tunc Hub.

  • Tunc HubYour AI chats create and edit docs, sheets and decks, and each opens in the Preview tab.Built in
  • MCPLet any MCP-compatible AI app create, read and edit your docs, sheets and decks.Sign in or API key
  • A2AAgent-to-agent access for agents running on other platforms.Sign in or API key
  • REST APICreate, edit, import and export docs, sheets and decks from scripts and your own software.With an API key

Locked doors, not secret links

Knowing the link isn’t enough.

Every doc, sheet and deck stays private to the people who have access to it.

Docs, sheets and decks
A doc is text agents read and write as Markdown, up to 1 MiB, with a title. A sheet holds cells, formulas, formats and charts. A deck is slides. Each has a short private link such as tuncdoc.com/x7Kp2a.
Viewers
Every visit is checked. People sign in with their Tunc account; a doc opens for its owner and for the people with access to the workspace it was made in.
Links
A link alone never opens a doc, and a doc you cannot open looks the same as a link that does not exist.
Edits
Agents change exact text, and all of an edit applies or none of it does. A rewrite starts from the revision the agent read, so newer changes are kept. A deck changes by slide and box, a sheet by range or typed operations such as sort, format and add chart, each all or nothing.
Comments and history
People and agents comment on a passage or on a sheet cell, and an agent can suggest an edit for someone to accept. Every change is a version, and an earlier version can be restored as a new one.
Writing together
People who may change a doc switch to Write on its page. Everyone writing sees the others’ changes as they happen, and an agent’s small edits appear the same way. A large change from an agent is saved at once and shows for people writing after their next save, or when they open the doc again. Writing works in a browser on a computer; on a phone a doc opens to read.
Word, Excel and PowerPoint
Bring in DOCX, PPTX, Markdown, XLSX, XLS, ODS and CSV files: agents import them, or you drop one on your docs page. Agents export a doc as DOCX, PDF, Markdown or HTML, a deck as PPTX (editable PowerPoint), PDF or PNG slides, and a sheet as XLSX with its formulas, formats and charts, CSV or PDF. People download from the page.
Save to Tunc Art
Turn a doc into a Tunc Art file with its own private link.
Storage
1 GB free, shared by Tunc Hub, Tunc Art, Tunc Doc and Tunc Orb across one Tunc account.

Questions

Asked often.

What is Tunc Doc?
Tunc Doc is where your agents write documents, spreadsheets and slide decks. Agents create, read and edit docs, sheets and decks, bring in Word (DOCX), Excel (XLSX) and PowerPoint (PPTX) files, and export to them. Each one gets a short private link. People open it after signing in, and the people who may change it can write in it too; a link alone never opens it.
Who can open a Tunc Doc link?
The owner, and the people with access to the workspace a doc was made in, after signing in with their Tunc account. A doc made without a workspace is private to its owner. Anyone else gets the same page as for a link that does not exist.
Can people write in a doc too?
People who may change a doc open it on tuncdoc.com and switch to Write. Everyone writing sees the others’ changes as they happen, and an agent’s small edits appear the same way. A large change from an agent is saved at once and shows for people writing after their next save, or when they open the doc again. Someone who can only read gets Read. Writing works in a browser on a computer; on a phone a doc opens to read.
How does an agent write a doc?
Over MCP at https://mcp.tuncdoc.com/mcp, over A2A at https://a2a.tuncdoc.com, or with the REST API at https://api.tuncdoc.com/v1/docs. There are 22 tools. For docs: doc_create, doc_list, doc_read, doc_edit, doc_write, doc_export, doc_delete, doc_comment, doc_history, doc_restore, doc_import, doc_threads and doc_thread. For decks: deck_read, deck_edit, deck_add_slides, deck_render and deck_check. For sheets: sheet_read, sheet_write, sheet_ops and sheet_add_chart. Creating one returns its link. In Tunc Hub the doc tools are built in, and a doc, deck or sheet opens in the Preview tab.
Which file formats does Tunc Doc use?
Agents and people can bring in Word (DOCX), PowerPoint (PPTX), Markdown, Excel (XLSX, XLS), ODS and CSV files. Agents export a doc as DOCX, PDF, Markdown or HTML; a deck as PPTX (editable PowerPoint), PDF or PNG slides; and a sheet as XLSX with its formulas, formats and charts, CSV or PDF. People download from the page, and can turn it into a Tunc Art file that has its own private link.
Can agents work with spreadsheets and slide decks?
Yes. A sheet holds cells, formulas, formats and charts: agents read a range, write values and formulas, and apply typed changes such as sort, format, merge and add chart, each all or nothing. A deck is slides: agents read it, change it by slide and box, add slides from a template or their own HTML, look at a rendered slide and check it before handing it back.
How do I get started?
Sign in at tunchub.com with Google, Apple or Microsoft, name your organization and accept the Terms. Then create an API key, or let your agent sign in itself. It is free.
How much does Tunc Doc cost?
Free to start: 1 GB of storage shared by Tunc Hub, Tunc Art, Tunc Doc and Tunc Orb. Docs are stored in it. Add 10 GB for $4.99 a month (sold through Link in 82 countries).
How big can a doc or an imported file be?
A doc is Markdown text of up to 1 MiB. A file you import can be up to 16 MiB: an MCP call carries about 3 MiB, and a larger file goes to the REST import route.
How do I stop an agent?
Disconnect it, or narrow it to read-only, on tunchub.com under Agents & keys. A disconnected agent is refused within a minute; your other agents keep working.

Start

Give every document, spreadsheet and deck your agents make a home.

Free: 1 GB, shared with Tunc Hub, Tunc Art and Tunc Orb.

Put it to work — in Tunc Hub, or with any other AI.

Download Tunc Hub on the Mac App StoreDownload Tunc Hub from the Microsoft StoreDownload Tunc Hub from the Microsoft StoreGet Tunc Hub on Google Play

See every Tunc product at tunc.ai.