Use Gemini CLI with American Express

BankSync's MCP server can let Gemini CLI query supported American Express account data that you have connected through BankSync and authorized for API access. Query your finances in natural language without spreadsheets or exports.

BankSync is not affiliated with, endorsed by, sponsored by, or partnered with American Express or Gemini CLI. Names are used only to describe potential account-data coverage and client compatibility.

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Get Started Free Gemini CLI Setup Guide

How to connect Gemini CLI to American Express

Creating a BankSync API key for an AI agent — one key, every agent

Search for American Express in BankSync

Sign up for BankSync and, if American Express is available, link your account through a provider-hosted or bank-hosted authorization flow.

Generate an API key

Create an API key from the Developers section of your BankSync workspace.

Configure Gemini CLI

Add the BankSync MCP server to Gemini CLI using your API key. Follow our Gemini CLI setup guide for step-by-step instructions.

Start querying

Ask Gemini CLI about supported American Express transactions, balances, and more using natural language.

Gemini CLI MCP Configuration

Add this configuration to let Gemini CLI query supported American Express account data through BankSync.

Gemini CLI Config

{
  "mcpServers": {
    "banksync": {
      "httpUrl": "https://mcp.banksync.io",
      "headers": {
        "X-API-Key": "bsk_your_key_here"
      }
    }
  }
}

What Gemini CLI can access from American Express

Accounts

List the American Express accounts connected through BankSync and visible to the API key scopes you grant.

Transactions

Query supported American Express transactions with provider-supplied dates, descriptions, amounts, merchants, and categories.

Balances

Get current and available balances for supported American Express accounts.

Ready to connect Gemini CLI to American Express?

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Gemini CLI setup guide American Express details MCP tools reference

Use American Express with another agent

The same BankSync MCP server and API key work with every one of these.

Other banks you can use with Gemini CLI

Institutions in the same market that Gemini CLI can query through BankSync MCP.

BankSync is not affiliated with, endorsed by, or an official partner of Gemini CLI or American Express. All product names and trademarks are the property of their respective owners. Bank connections are established through regulated open banking providers.