How to Connect Bing Webmaster Tools to Gemini?

Before you start

You'll need a SourcetoMCP account with at least one brand created, a Bing Webmaster Tools account with at least one verified site, and a personal Google account signed in to Gemini. Custom apps in Gemini need a personal account, not a Workspace or school account, and Google also restricts them to accounts 18 and over, located in the US, with the language set to English and Keep Activity turned on.

Generate an API key in Bing Webmaster Tools

1. 1Sign in at bing.com/webmasters with the Microsoft account tied to your site.
2. 2Make sure the site you want to connect is already added and verified.
3. 3Click your profile icon (top right) → Settings → API Access.
4. 4Select Generate API Key, then copy it immediately, because Bing only shows the full key once.

One key covers every site your account can see, and you'll pick which sites to connect in the next step.

Connect Bing Webmaster Tools to SourcetoMCP

1. 1From your dashboard, go to Connectors → Add a connection.
2. 2Find the Bing Webmaster Tools card and select Connect.
3. 3Paste the API key into the field and select Connect Bing Webmaster Tools. This verifies the key directly against Bing.
4. 4Choose which verified site(s) to connect, then confirm.

Connected sites then appear on your Connections page like any other source.

Add SourcetoMCP as a custom app in Gemini

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 Gemini, open Settings & help, then Connected Apps.
3. 3Under Custom apps, choose Add a custom app and paste in your server address.
4. 4When prompted, approve the Authorization request to access SourcetoMCP.
5. 5Start a new chat. Gemini asks for your approval the first time it calls a SourcetoMCP tool, then reconnects on its own after that.

If Add a custom app doesn't appear, it's almost always the eligibility restrictions above, not a problem with SourcetoMCP itself. Double check the signed-in account is personal (not Workspace or school), 18 or over, located in the US, set to English, with Keep Activity on.

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 Gemini about your Bing Webmaster Tools site

Once it's added, SourcetoMCP is available to Gemini in any conversation, there is no separate toggle to switch on per chat. Gemini discovers the tools the server exposes and calls them the same way it uses any of its other connected apps.

With both pieces connected, Gemini can query your Bing search performance, check crawl health, look at who links to your pages, research keywords using Bing's own search data, and act on what it finds if you ask. Try something like:

1. 1How did organic clicks and impressions on Bing change over the last 90 days?
2. 2Which pages have the most backlinks pointing at them right now?
3. 3Find keyword opportunities for [topic] using Bing's own search data.
4. 4Ask Bing to recrawl /pricing and tell me once it's done.

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

Bing Webmaster Tools through SourcetoMCP can do two things beyond reporting: ask Bing to recrawl a URL (one at a time or in a batch), and submit or remove a sitemap. Neither changes anything on your actual site, and neither can affect spend or take content offline the way a write action on an ads connector can. The worst case is a wasted submission against Bing's own daily quota. Gemini will still tell you what it's about to do before it does it.

Troubleshooting

“That API key was rejected”: the key is wrong, was regenerated since you copied it, or was revoked. Generate a fresh one under Settings → API Access and try again.

My site isn't in the list when connecting: the account the key belongs to hasn't added or verified that site in Bing Webmaster Tools yet. Add and verify it there first, then reconnect.

Add a custom app doesn't show up under Connected Apps: Google limits custom apps to personal Google accounts, age 18 and over, located in the US, language set to English, with Keep Activity turned on. Check each of those before assuming something is broken.

Gemini says it can't find the tool or has no data: check the app still shows as connected under Settings & help → Connected Apps. If it does, confirm the connection still shows under Active connections in SourcetoMCP, then remove and re-add it to trigger a fresh approval.

Revoking access

You can disconnect from either side. In SourcetoMCP, remove the site from your Connections page, or revoke Gemini's access entirely from the Connect an agent page. In Gemini, open Settings & help → Connected Apps and remove it. In Bing Webmaster Tools, generate a new API key under Settings → API Access, which invalidates the old one.

Still stuck?

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