Mantafin
Research U.S. stocks, ETFs and funds in ChatGPT and Claude with financial statements, filings, screeners, analyst estimates and portfolio backtesting.
Documentation
Step 1
Open ChatGPT Settings
Start from your ChatGPT workspace.
- Click the icon with your name or initials in the bottom-left corner.
- Select Settings from the menu.

Step 2
Select Plugins
Open the area where ChatGPT manages plugins and developer settings.
- Select Plugins in the settings menu.
- Click Developer Mode to continue.

Step 3
Enable Developer Mode
Developer Mode must be enabled before you can add Mantafin manually.
- If ChatGPT redirects you to Security and Login, use that page.
- Scroll until you find Developer Mode.
- Turn Developer Mode on.

Step 4
Return to Plugins
Go back to the plugin area after Developer Mode is enabled.

Step 5
Add a Plugin
Create a new custom plugin entry for Mantafin.
- Find the plus icon in the top-right corner of the plugin directory.
- Click the plus icon to add a new plugin.

Step 6
Enter Mantafin's Information
Use the information shown in the screenshot to configure the Mantafin connection.
- Enter Mantafin as the plugin name.
- Paste the URL shown in the screenshot into the connection section.
- Set the authentication type to OAuth.
- Click the checkmark at the bottom of the popup.
- Select Create to finish creating the plugin.

Step 9
Refresh Available Tools
Refresh the plugin tools after Mantafin is connected.
- Return to the plugins section after signing in.
- Click the refresh button once so ChatGPT loads the latest Mantafin tools.

Step 10
Start Using Mantafin
Mantafin is now ready to use inside ChatGPT.
- Type @Mantafin in your prompt.
- Ask ChatGPT to research securities, compare data, screen investments, or analyze portfolios.
- ChatGPT will choose from the available Mantafin tools to support your workflow.

Frequently Asked Questions
Edit the FAQ object at the top of this page to customize these answers for ChatGPT setup.