Add 13F.ai to your AI › Gemini
Add 13F.ai to Gemini.
A few minutes. Personal Google accounts in the US. Works today
Which Gemini accounts work
gemini.google.com in a browser. You can't add it from the Gemini mobile app, but once it is added it works in the mobile app too. Google changes these screens often, so a label may differ slightly from the ones below.- Work, school and Workspace accounts. Not supported for custom apps. A Gemini Enterprise administrator has a separate way to connect an MCP server for a team; this guide doesn't cover it and we haven't tested it.
- Free, Google AI Pro and Google AI Ultra. Google's article doesn't say which plans qualify, so we can't either. If you meet the conditions above, try it on the plan you have.
- Google AI Studio and the Gemini API. Not covered. This feature and this guide are for the Gemini app.
Add a custom app
Go to
gemini.google.com. Open Settings, then Personal Intelligence, then Connected Apps, then Connectors, and click + Custom. Enter this server address and click Next:https://13f.ai/api/mcpLeave Advanced features as they are: 13F.ai registers Gemini automatically, so there are no credentials to enter.
Sign in and approve
On the 13F.ai page that opens, sign in if asked, check that it names Gemini or Google, then click Approve. Back in Gemini, scroll to the bottom of the warning, tick the box and click Connect. On the last screen, rename the app to 13F.ai and save.
Pick 13F.ai and ask
Start a new chat, type @ and choose 13F.ai. Then say you want it used: “@13F.ai Use 13F.ai (not web search) to show which stocks members of Congress bought most in the last 30 days.”
Try these first
@13F.ai Use 13F.ai (not web search) to answer: Which members of Congress traded NVDA this year?
@13F.ai Use 13F.ai (not web search) to answer: What were the largest purchases disclosed by the Senate this month?
@13F.ai Use 13F.ai (not web search) to answer: How did Nancy Pelosi vote this week?
All three work on Basic.
Every screen, step by step
Open Connectors
Go to
gemini.google.com. At the bottom, click Settings, then Personal Intelligence, then Connected Apps. Open the Connectors page.Click + Custom
On the Connectors page, click + Custom.
Enter the address
Enter this server address:
https://13f.ai/api/mcpThis first dialog has no name field. While Gemini links the app it may show it as [Custom] 13f: that is fine, you name it at the end. Leave Advanced features as they are: 13F.ai registers Gemini automatically, so there are no credentials to enter. Click Next.
Sign in on 13f.ai
Follow the instructions on screen. A 13F.ai page opens: if you aren't signed in yet, continue with Google or ask for a sign-in link by email.
Approve
Check that the page names Gemini or Google and will send you back to a Google address, then click Approve. Gemini can now read 13F.ai data for you. It can't change anything, and it never sees your password.
Scroll, tick the box, Connect
Back in Gemini, a warning about custom apps appears. Connect stays greyed out until you scroll to the bottom of it and tick the box. Do that, then click Connect.
Gemini's warning is generic and says an app can “retrieve and manage data”. 13F.ai is read-only: its tools only look up public filings, and there is nothing in it for Gemini to change.
Rename it to 13F.ai and save
The last screen, Save your custom app, is where the name appears. Gemini prefills 13F Ai: change it to 13F.ai, then save. Now it is easy to find in the @ menu.
Pick 13F.ai in a chat
Start a new chat, type @ and choose 13F.ai. If 13F.ai does not appear under Installed on the Connectors page, even after you reload, that is a Gemini display quirk: it is still connected, and it shows in the @ menu.
Ask
Ask in plain English, and say you want 13F.ai used (see below). Gemini looks the answer up in the filings and links to each source.
These steps follow Google's help article on custom apps in Gemini. Menus move from time to time, so a name may differ slightly in your version. Gemini has no public directory of apps to browse, so the custom app is the way to add 13F.ai. Google points out that a connected app may receive information from your chat. 13F.ai receives only the lookups Gemini sends it, and its tools only read public-filing data.
How to make Gemini use 13F.ai
Being connected is not the same as being used. In our own test, Gemini listed all of 13F.ai's tools but answered from Google Search and made no call to 13F.ai. To steer it:
- Start a new chat.
- Type @ and pick 13F.ai from the menu.
- Say so in the question: “Use 13F.ai (not web search) to …”
Gemini may still prefer web results, and we can't control that. A quick way to tell: answers that come from 13F.ai carry links to 13f.ai, the SEC, the House or the Senate. If you only see news sites, ask again, naming 13F.ai.
Trouble, or disconnecting
Having trouble? If Gemini says automatic registration failed and asks for a client ID and secret, don't enter anything: close the dialog, try again in a few minutes, and if it still fails, write to support@13f.ai. A message that you need the Premium plan means you asked for something outside the free data (trades, members, bills, votes and PAC donations, FINRA short interest and short volume), or your trial or subscription isn't active: see pricing. If Gemini can't connect, check that the address is exactly https://13f.ai/api/mcp.
Disconnecting. In Gemini, open Settings, Personal Intelligence, Connected Apps, find 13F.ai among your custom apps and choose Disconnect or Remove app (the wording changes). You can also disconnect it from the Connected apps list on your account page. It stops working within about a minute.
Two accounts side by side? If Gemini refuses a second connector with the same address, add a harmless ending to the second one, for example https://13f.ai/api/mcp?t=2: the server ignores it.
Basic: Congress data. Premium: all 44 datasets. Start 7-day free trial Card required.