How to Connect Pinterest to ChatGPT with MCP?

Before you start

You'll need a SourcetoMCP account with at least one brand created, a Pinterest account with access to at least one ad account, and a ChatGPT account on a Pro, Plus, Business, Enterprise or Education plan. Custom MCP connectors run through developer mode, which works on ChatGPT on the web only.

Connect Pinterest Ads to SourcetoMCP

1. 1From your dashboard, go to Connectors → Add a connection.
2. 2Find the Pinterest Ads card and select Connect.
3. 3Sign in with the Pinterest account that has access to the ad account you want. This opens Pinterest's own consent screen on pinterest.com and asks you to approve access to your ad performance data plus your boards and pins. SourcetoMCP can both report on them and make changes to them.
4. 4Back in SourcetoMCP, choose which ad account(s) to connect, then confirm. They show up on your Connections page.

Add SourcetoMCP as a connector in ChatGPT

1. 1In SourcetoMCP, open Connect an agent from the dashboard sidebar and copy your server address (it looks like https://sourcetomcp.com/api/mcp).
2. 2In ChatGPT, open Settings, then Security and login, and turn on Developer mode. Custom MCP connectors sit behind this toggle, and it only appears on ChatGPT on the web.
3. 3Open the Plugins menu and select the “+” button to create a developer-mode app.
4. 4Enter the name SourcetoMCP, paste in your server address, and pick OAuth as the authentication type.
5. 5Save. The app now sits under Drafts in your app settings, where you can switch individual tools on or off.
6. 6The first time ChatGPT calls it, you'll be asked to sign in to SourcetoMCP and approve access, the same OAuth approval you'd see connecting any other app. After that it reconnects on its own.

Once approved, the connection appears under Active connections on the Connect an agent page in SourcetoMCP, so you can see exactly what has access at any time.

Ask ChatGPT about your Pinterest account

A developer-mode app stays off until you pick it. In a chat, open the Plus menu, choose Developer mode, and select SourcetoMCP for that conversation. Naming the app in your question helps ChatGPT reach for the right tool, as in “Use the SourcetoMCP app to get my top queries last month”.

Anything that writes back to a connected account asks you to confirm first, and ChatGPT shows you the JSON payload it plans to send. Read it before you approve.

With both pieces connected, ChatGPT can query campaign, ad group and creative performance, break down conversions by funnel step, and separately report on your boards and pins' organic reach, and act on either side if you ask. Try something like:

1. 1How did my campaigns perform this week compared to last?
2. 2Break down my conversions by funnel step for this month.
3. 3Which of my boards are getting the most engagement right now?
4. 4Reallocate budget from my weakest campaigns into my strongest ones.

The first three are read-only reports. The last one is a write action. See the note below on how SourcetoMCP handles those.

A note on write actions

Unlike a read-only connector, Pinterest Ads through SourcetoMCP can create and change real things: campaigns, boards and pins, on both the ad and organic side. New campaigns are created paused by default, so nothing starts spending without an explicit follow-up action. Board and pin deletion is real too, and cannot be undone from inside SourcetoMCP, so it's worth reading what ChatGPT proposes before confirming anything it describes as removing or replacing content, the same as you would for any assistant with write access to a live account.

Troubleshooting

My ad account isn't in the list when connecting: the signed-in Pinterest account doesn't have access to that ad account. Add it under Pinterest's own Business Access settings, then reconnect.

Developer mode is missing from Settings: it is available on Pro, Plus, Business, Enterprise and Education accounts, and only on ChatGPT on the web. The mobile apps do not show it.

The app never appears in a chat: developer-mode apps sit under Drafts and stay off until you pick them. Open the Plus menu, choose Developer mode, and tick SourcetoMCP for that conversation.

ChatGPT says it can't find the tool or has no data: open the app's details page and use Refresh to pull the current tool list from the server. If that changes nothing, check the connection still shows under Active connections in SourcetoMCP.

Revoking access

You can disconnect from either side. In SourcetoMCP, remove the account from your Connections page, or revoke ChatGPT's access entirely from the Connect an agent page. In ChatGPT, open your app settings, find SourcetoMCP under Drafts, and delete it. Turning Developer mode back off hides every custom app at once without deleting any of them.

Still stuck?

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