BankBridge

What BankBridge does

BankBridge exposes connected financial accounts to MCP-compatible AI clients for read-only analysis. It can retrieve checking, savings, credit card, loan, and investment account details, including balances, credit limits, institutions, and masked account numbers. Investment tools provide current positions and account activity, while transaction tools support filtering, merchant searches, category analysis, cash-flow reporting, and recurring-charge detection.

The service is intended for US bank connections. One BankBridge account can cover every bank connected to its dashboard. A paid account costs $5 per month or $50 per year for each connected bank, and a demo with sample data is available from the sign-in screen without creating an account.

How it works

BankBridge is a remote MCP endpoint at https://bankbridge.money/api/mcp using Streamable HTTP. OAuth 2.1 with Dynamic Client Registration is the normal authentication method; clients can also send a bearer key beginning with bbk_ from the BankBridge dashboard.

Calling connect_bank produces browser links rather than changing account connections directly. The user opens a link, signs in to the bank on bankbridge.money, and completes the connection. The same tool can return reauthorization links for banks that need attention or have consent expiring within 30 days.

Most financial responses include a warnings array when one or more connected institutions could not provide data. Warnings may include a message and a reconnect URL. Account IDs returned by list_accounts are used with account-specific tools.

Setup and configuration

Claude users can add BankBridge through the Claude Connectors Directory. Claude Code supports the BankBridge plugin or a direct MCP registration:

claude mcp add --scope user --transport http bankbridge https://bankbridge.money/api/mcp

The plugin can be installed with:

/plugin marketplace add bankbridge-money/bankbridge-plugin
/plugin install bankbridge

Cursor and VS Code provide installation links that open the browser sign-in flow. Gemini CLI and Codex can register the same remote endpoint:

gemini mcp add --scope user --transport http bankbridge https://bankbridge.money/api/mcp
codex mcp add bankbridge --url https://bankbridge.money/api/mcp

Other MCP clients can use the endpoint directly with OAuth 2.1 or a dashboard bearer key. At least one bank must be connected before live account data is available.

Tools and capabilities

• List accounts and retrieve live details for a selected account.
• Filter or search transactions by date, account, category, amount, pending status, merchant, or bank description.
• Group posted spending by category, merchant, month, or week.
• Detect recurring weekly, biweekly, monthly, quarterly, and yearly charges.
• Calculate monthly income, expenses, net cash flow, and leading sources or categories.
• Inspect merchant history, available transaction categories, and bank-connection warnings.
• List investment holdings with market values, cost basis when reported, and gain or loss.
• Review investment activity such as buys, sells, dividends, fees, and transfers.
• Generate links for new bank connections or required reauthorization.

Transaction and investment results are paginated. Defaults and maximums vary by tool, and several tools use a recent default time window that can be expanded through their parameters.

Limitations and notes

BankBridge is read-only: its tools retrieve and analyze information but do not transfer money, edit transactions, or change bank settings. Bank data availability depends on the connected institution. A bank may require reconnection, and cost basis or gain/loss can be unavailable when the institution does not report cost basis.

Transaction sign conventions matter: positive transaction amounts represent spending, while negative amounts represent money received. Monthly cash-flow results exclude pending transactions. Recurring-charge detection needs a window of at least 13 months to identify yearly charges. The service returns up to 24 months of bank transaction history, subject to institution availability.