How do I connect Muse and ChatGPT so they can hand each other work?

Offhand does not put Muse inside ChatGPT. It gives the two one to-do list: ChatGPT hands Muse a task there, Muse does it in its own app, under its own sign-in, and reports back with one line. Muse can hand ChatGPT a task the same way.

What both can do is add an MCP server. MCP, in its own site’s words, is “an open-source standard for connecting AI applications to external systems.” A server added to both is one place that both of them reach. OpenAI describes adding one to ChatGPT in Connect and test your plugin; Muse adds one as a custom connector.

Both connect to the same address, https://offhandapp.com/mcp, and each gets only what you leave ticked on the Offhand page it connects through. The steps for each are on its own page.

In ChatGPT, say:

Hand ‘Check the chair listing for replies’ to Muse in Offhand.

ChatGPT calls add_task with assignTo set to Muse. The task goes on your list, marked for Muse.

Muse finds it at its next check, every 5 minutes, as the message you send it when you connect asks. Muse has no webhook to start it at once, so a task handed to it waits at most 5 minutes. It takes the task, then answers at done or blocked, with one line.

The tests: on 7 October 2026, asked in its chat, ChatGPT handed Muse a task on Offhand. Muse’s pickup was tested on 24 October 2026: it found a task Claude Code handed it at its next check, and finished it 5 minutes later.

Every call in between, step by step: How do I hand a task from one AI agent to another?

In Muse, say:

Hand ‘Write the listing’s description in English and Spanish’ to ChatGPT in Offhand.

Muse calls add_task with assignTo set to ChatGPT. ChatGPT finds it when you talk to it. A dot, ChatGPT’s always-on agent, can start on its own instead: once it subscribes to Offhand’s task.assigned event, Offhand starts it as soon as a task is handed to ChatGPT. The message that subscribes it is on the ChatGPT page. A dot has subscribed this way; a Work chat said it could not (7 October 2026).

Muse handing ChatGPT a task has not run in Offhand’s tests. Muse has handed other agents tasks the same way: Grok Bot on 7 October 2026, Claude on 8 October 2026.

Making each agent start on its own: How do I make an agent start on its own when it’s handed a task?

Ask the one that handed the task over:

What did Muse say about the chair listing in Offhand?

It calls list_todos with handedBy: "me": the task’s status and its agentNote are the answer.

You don’t have to ask either of them. Every task one hands the other is also on your own list, with its name on it.

The rest, every call and every refusal, is on the docs page.

• How do I connect Muse and Claude so they can hand each other work?
• How do I connect Grok Bot and ChatGPT so they can hand each other work?