Plainpaper

What "installing" Plainpaper actually means

You don't download anything. In Claude, a tool like Plainpaper is aconnector, a secure link between your chat and the service. From then on, Claude can open a Plainpaper board and write campaign cards onto it whenever you ask, without you leaving the conversation.

One difference from Canva or Notion, and it's worth being straight about: Plainpaper isn't in Claude's browsable connector directory yet, so you add it as a custom connector instead of finding it in a list. In practice that means pasting one URL. Everything after that, the sign-in and the approval, is the standard flow, and the connector behaves identically to a directory one once it's on.

The whole thing takes about three minutes, and most of that is the one-time sign-in. Below is every step, in order.

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A one-click listing is on the way. We're working on getting Plainpaper into Claude's connector directory, at which point this page gets shorter. Until then the URL below does the same job.

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Before you start. You'll need a Claude plan that supports connectors (Pro, Max, Team, or Enterprise) and a Plainpaper account (free to create when you connect, and it starts on a 7-day trial). On Team and Enterprise, an admin may need to switch the Plainpaper connector on for your workspace first.

The setup at a glance

Three stages: add the URL, authorize it, switch it on in a chat. Each one is a couple of clicks.

1 · AddPaste the URL

2 · ConnectSign in & allow

3 · EnableIn your chat

Step by step: add the connector

1

Open Connectors in Claude's settings

On claude.ai, click your name in the bottom-left, choose Settings, then open the Connectors tab. InClaude Desktop, it's Settings → Connectors as well. This is the screen that lists every tool Claude can reach.

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No Connectors tab? That usually means your plan doesn't include connectors yet, or, on Team and Enterprise, an admin hasn't enabled them. Free and some legacy plans won't show it.

2

Choose "Add custom connector"

Scroll to the bottom of the Connectors screen and clickAdd custom connector. Plainpaper isn't in Claude's browsable directory yet, so this is the route in. It's the same connector either way: the directory listing is a shortcut, not a different product.

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Coming to the directory. We're working with Anthropic on getting Plainpaper listed as a one-click connector. Until that lands, pasting one URL is the whole difference, and connectors you add this way work exactly like directory ones.

3

Paste the Plainpaper URL

Claude asks for the connector's address. Paste this in and confirm:

https://mcp.plainpaper.io/mcp/

That's the only thing you have to type or copy in this entire guide. You can leave every other field on that dialog alone.

4

Click Connect and approve access

Plainpaper now appears in your connector list. HitConnect and Claude sends you to Plainpaper's authorization page, where you sign in (or create an account, free for 7 days) and approve access. This uses OAuth, soClaude never sees your password. It only receives permission to work with your boards. Approve, and you're sent straight back to Claude.

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You stay in control of what ships. The connector lets Claude draft on the board, not send on your behalf. Approval of emails and ad creative always happens on the board, and the real sending runs through each tool's own connector.

5

Confirm it shows "Connected"

You're returned to the Connectors screen, and Plainpaper now sits in your list with a Connected label. That's the install done. Plainpaper is wired to your Claude account.

6

Switch Plainpaper on in a chat

Connecting a tool makes it available; each chat decides which connectors are active. Open a new conversation, click the search-and-tools menu near the message box, and make sure Plainpaper is toggled on. Now Claude can use it here.

7

Create your first board

Ask Claude to start something. It opens a Plainpaper board and begins writing cards onto it. You'll see the board fill in as it works.

Prompt

Create a Plainpaper board for a Black Friday skincare campaign. Start from the Ecommerce playbook, draft a primary audience and a brief, and put them on the board so I can review.

What you'd see: Claude calls the Plainpaper connector to create the board and add cards. They appear on the canvas in real time, ready for you to review.

Don't have a Plainpaper account yet?

Start a 7-day free trial, no credit card, and the connector has a board to write to in a couple of minutes.

If something's not working

• No "Connectors" tab in Settings. Your plan likely doesn't include connectors, or an admin hasn't enabled them. Connectors are a Pro, Max, Team, and Enterprise feature.
• You can't find Plainpaper in the connector list. You won't: it isn't in Claude's browsable directory yet. Scroll to the bottom of Settings → Connectors and use Add custom connector instead.
• Claude rejects the URL. It needs the full address including the trailing slash: https://mcp.plainpaper.io/mcp/. On Team and Enterprise, an admin may also need to allow custom connectors for the workspace.
• Claude says it can't reach Plainpaper. Open the search-and-tools menu in your chat and confirm Plainpaper is toggled on for that conversation. Connecting it in Settings isn't the same as enabling it in a chat.
• The authorize window closed without connecting. Pop-up blockers can interrupt the OAuth step. Allow pop-ups for Claude, then click Connect again.
• You want to start over. In Settings → Connectors, choose Disconnect on Plainpaper, then add it again with the same URL.

What to do once it's connected

With the connector live, the board becomes Claude's workspace. A few first things worth asking for:

• Start from a playbook. Ask Claude to open a board from the Ecommerce or Product Launch playbook so the phases and starter cards are already in place.
• Draft an audience and a brief. Give it the goal and the offer in plain language; it lays each one out as a typed card you can correct.
• Approve before anything ships. Emails and ad creative land on the board for your sign-off. Claude only pushes them out through each destination's own connector after you approve.

Key takeaways

• Plainpaper installs as a connector with no download, under Settings → Connectors → Add custom connector.
• It isn't in Claude's directory yet, so you paste https://mcp.plainpaper.io/mcp/ once, then click Connect and sign in via OAuth. A one-click listing is in the works.
• Connecting makes it available; switch it on per chat from the search-and-tools menu.
• Connectors need a Pro, Max, Team, or Enterprise plan; Team and Enterprise may need an admin to approve it.
• The connector lets Claude draft on the board. You still approve what actually ships.

Frequently asked questions

Where do I find Plainpaper in Claude?

Not in the connector directory, yet. Plainpaper isn't listed there at the moment, so you add it yourself: open Settings → Connectors, click Add custom connector at the bottom, and pastehttps://mcp.plainpaper.io/mcp/. Then click Connect and approve access. We're working on a one-click listing so this step goes away.

Do I need a paid Claude plan to use connectors?

Yes. Connectors, custom ones included, are available on Claude's Pro, Max, Team, and Enterprise plans. On Team and Enterprise, an admin may need to allow custom connectors for the workspace before you can add one.

Is it safe to connect Plainpaper to Claude?

Yes. The connection uses OAuth, so you sign in on Plainpaper's own page and Claude never receives your password. You grant Plainpaper permission to read and write your boards, and you can revoke that access at any time from the Connectors screen.

Why don't I see Plainpaper in my chat after connecting?

Connecting a tool in Settings makes it available, but each chat decides which connectors are on. Open the search-and-tools menu near the message box and switch Plainpaper on for that conversation. If it's still missing, refresh or start a new chat.

Does Plainpaper send my emails or post my ads?

No. Plainpaper is the canvas where Claude drafts and you approve. It holds the plan and the assets, not your sending credentials. Claude pushes approved work out through each destination's own connector (Mailchimp, Meta, your ESP), never from Plainpaper.

How do I remove or disconnect Plainpaper?

Open Settings → Connectors, find Plainpaper, and choose_Disconnect_. That revokes Claude's access immediately. You can add it again with the same URL whenever you want.

Next step: give the connector a board

The connector is only half the setup. It needs a Plainpaper board to write to. Every Plainpaper account starts with a 7-day free trial, no credit card, so your next campaign can start on a canvas your agent fills in for you.