Your agents' personal cloud database.
Ask an AI to keep track of something and it usually writes a file on one computer. Tunc Orb gives that data a home in the cloud, readable by every agent you connect and by nobody else. Sign up free, create an API key and connect your agents, or use it through Tunc Hub.
Built into Tunc Hub. Open to every agent.
Use Tunc Orb 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 Orb, Tunc Art and Tunc Hub.
- Tunc HubChats and BOTs keep records and logs with built-in tools, under your rules and approvals.Built in
- MCPPlug Orb into any MCP-compatible AI app or agent.Sign in or API key
- A2AAgent-to-agent access for agents running on other platforms.Sign in or API key
- REST APIPlain HTTPS for scripts, servers and your own software.With an API key
Orb keeps the what.
Tunc teaches its AI a simple split, so each kind of knowledge lands in the right place.
Your agents read it. Nobody else does.
One store per owner, shared by all of their agents. People in your workspaces can't see it.
- Records
- Named records and append-only logs, up to 16 MiB each. Agents create, read, patch, append to, search and delete them.
- Access
- Every connected agent gets a 5-minute token from Tunc Core, then reads and writes Orb directly.
- Tunc Core
- Decides who may connect. It never stores or carries what your agents save.
- Website
- Shows storage, usage, connections and shelf labels. No record browser, preview, search, editor or export.
- Addresses
- A shelf has a short address like tuncorb.com/k7q2xg9m. The address is not a password; opening it needs sign-in and access.
- Revoking
- Disconnect one agent and Orb refuses it within a minute. The others keep working.
- Archive
- Archiving a shelf stops agent access. Restore it within 30 days; after that its data is removed.
- Storage
- 1 GB free, shared with Tunc Art across one Tunc account.
Part of one system.
Tunc Orb is one of eight Tunc products. One Tunc account works across all of them.
Asked often.
- What is Tunc Orb?
- Tunc Orb is your agents' personal cloud database. Every agent you connect saves and reads the same named records and append-only logs, so what one agent saves, the others can use, on any computer. Nobody else can see it.
- Which AI apps and agents can use Tunc Orb?
- Any MCP client (for example Claude, ChatGPT, Cursor, VS Code and Gemini CLI) at https://mcp.tuncorb.com/mcp, any A2A 1.0 agent at https://a2a.tuncorb.com/v1, and your own software through the REST API at https://api.tuncorb.com. Tunc Hub chats and BOTs have it built in.
- How do I get started?
- Sign in at tunchub.com with Google, Apple, Microsoft or GitHub, name your organization and accept the Terms. Then create an API key, or let your agent sign in itself. It is free.
- Can other people see my agents’ data?
- No. There is one store per owner, shared by that person’s agents only. People in your workspaces cannot see it, and the website shows storage, usage and connections, never the records themselves.
- How much does Tunc Orb cost?
- Free to start: 1 GB of storage shared by Tunc Hub, Tunc Art and Tunc Orb, with reads and writes included (50,000 Tunc Orb operations a day). Add 10 GB for $4.99 a month (sold through Link in 82 countries).
- Can I use Tunc Orb outside the United States?
- Yes. Sign-up and the free plan do not depend on your country. Paid storage is sold through Link in 82 countries; Link, Stripe’s payment service, handles payment and tax there.
- What happens when storage is full?
- Tunc Orb stops new saves until you free space or add storage; Orb data is never removed to make room. Reading and deleting always work.
- 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.
Give your agents a place to keep things.
Free: one shelf and 1 GB, shared with Tunc Art. Tunc Hub connects your chats and BOTs for you.
See every Tunc product at tunc.ai.