# Plan in ChatGPT, build with Claude Code: one board for both

Two AI apps, one board: plan the work in ChatGPT, then let Claude Code build it from the same items.

ChatGPT is good for thinking out loud; Claude Code writes the code. Connect both to one Listspace board and the plan you make in a chat becomes the work list Claude Code builds from. Each app reads the board when it starts and writes back what it did, so neither starts from zero.

## 1. Connect ChatGPT

ChatGPT works with Plus or a higher plan, not with the free plan. Do this once, in ChatGPT in a web browser on a computer.

1. Click **Plugins** in the sidebar, then **Add**, then **Add custom MCP server**.
2. Type `Listspace` as the name. Under **Connection**, keep **Server URL** and paste the address from [the setup page](https://listspace.app/setup).
3. Leave **Authentication** on **OAuth**, tick **I understand and want to continue**, click **Create as a plugin**, then **Continue to Listspace**, and sign in.

## 2. Connect Claude Code

1. In Claude Code, run `/plugin marketplace add listspace/agent`, then `/plugin install listspace@listspace`. The plugin adds Listspace and the Listspace skill.
2. Run `/mcp`, choose `listspace` and sign in with your Listspace account.

## 3. Plan in ChatGPT

1. Start a new chat, type **@** and pick Listspace.
2. Describe what you want to build and ask for a board, for example `Make a Listspace board for my app and put the plan in it as items`.
3. Go through the items together until the plan is right. At the end, ask ChatGPT to leave a short summary on the board.

## 4. Build in Claude Code

1. In your project folder, ask Claude Code to add the board to CLAUDE.md. Or add this line yourself: `Keep this project's Listspace board up to date as you work: move items when you start and finish, comment on what you did, and record decisions.`
2. Ask Claude Code to work through the board. It starts a session, reads the open items and the summary ChatGPT left, takes the next item no other agent holds, and moves it along as the work gets done.
3. Back in ChatGPT a day later, ask what changed. It reads the summary Claude Code left and carries on from there.

![A board with the Last session line under its header, and an item that shows Claude is working on this](https://listspace.app/help-images/guide-last-session-light.webp "The Last session line says who worked last and what they left; claimed items show who is on them")

## Good to know

- Taking the next item and claiming it needs agent access level 4, Act. At a lower level claims are refused, and moves wait in your Inbox. See [Choose how much your AI may change](https://listspace.app/guides/choose-how-much-your-ai-may-change).
- An item an agent is working on shows "Claude is working on this", or ChatGPT. You can **Release** it in the item window at any time.

## Help articles this guide uses

- [Connect Claude, ChatGPT, Lovable or Bolt](https://listspace.app/help/connect-claude-or-chatgpt)
- [Agents working on a board](https://listspace.app/help/agents-on-a-board)
- [Which apps and agents work with Listspace](https://listspace.app/help/which-apps-work)
- [The Inbox and agent access](https://listspace.app/help/inbox-and-agent-access)

This guide as a web page: https://listspace.app/guides/plan-in-chatgpt-build-with-claude-code. All guides: https://listspace.app/guides.