How-to

How to connect multiple banks to one agent

4 min read
Connect each bank through the dashboard separately. Each adds $5/mo to your BankBridge subscription and shows up immediately in the agent's account list. Cross-bank questions like combined cashflow and portfolio-wide allocation work automatically — the agent aggregates across every connected institution on each tool call.

The setup

Sign into your dashboard. You'll see a “Connect a bank” button at the top. Click it. A secure link UI opens; search for your institution; log in with your bank credentials (BankBridge never sees them) and approve read-only access.

After the first bank connects, the button is still there. Click it again for bank #2, then again for #3. Each one adds an encrypted access token to BankBridge and bumps your Stripe subscription quantity by one. No re-configuration of your agent needed; the next tool call automatically includes the new bank.

What unlocks when you connect the second one

One bank gives you single-account questions. Two or more unlocks the aggregate view:

  • Combined cashflow. Your savings rate across every account, not just the one your paycheck hits.
  • Cross-bank transfers.Money moving from checking to savings to brokerage — visible end-to-end instead of disappearing into one account's outflow and appearing from another's inflow.
  • Portfolio allocation. Holdings in your brokerage plus cash across accounts; the agent can compute your full portfolio percentage in any asset class.
  • Category totals. Groceries charged across two cards show up as one bucket, not two disconnected lists.
  • Full-picture recurring-charge detection. Subscriptions split across a personal card and a business card get caught together.

Typical 3-5 account layouts

Most people we see use one of these shapes:

  • Simple (2 banks, $10/mo): primary bank (checking + savings + credit card, one institution) + brokerage (Fidelity, Schwab, Robinhood).
  • Diversified (3 banks, $15/mo):primary checking + high-yield savings at a separate bank (Ally, Marcus) + a dedicated credit card + brokerage. Many people have this and don't realize they have “four banks.”
  • Small business (4 banks, $20/mo): personal checking + personal credit + business checking + business credit. Keeps personal + business separate automatically when the agent answers questions.
  • Real estate (5+ banks, $25+/mo): personal + LLC operating + property-specific accounts (sometimes one per property for bookkeeping cleanliness).

Edge cases: joint accounts, business accounts, trusts

Joint accounts. Both account holders can connect the account to their own BankBridge subscription independently. Or share one subscription, one dashboard login. Your call; the data is the same.

Business accounts. Business checking/credit from most major banks connects fine. Some regional banks have stricter business-auth flows; if yours balks, email hello@greatwork.company and we'll help.

Trusts.Trust accounts usually connect the same as personal accounts but may show up under the trustee's name. If your trustee is a separate person, they'll need to do the connection flow.

FAQ

How much does it cost?

$5/mo per connected bank. Two banks is $10/mo, four banks is $20/mo. Billing is one Stripe subscription with the quantity equal to your bank count.

Does the agent see which transactions came from which bank?

Yes. Every transaction has an account_id that the agent can surface if you ask. Most of the time you don't care (a charge is a charge), but when you need it for reconciliation the data is there.

Can I remove a bank later?

Yes. Disconnect from the dashboard. Your Stripe quantity decreases at the end of the billing period (so you get credit toward the next invoice). Access tokens are revoked immediately and your agent stops seeing that bank's data.

What if one of my banks needs to re-auth?

BankBridge detects reauth-needed connections and surfaces a warning via MCP tool calls. Your other banks keep working. Visit the dashboard to complete the re-auth flow for the flagged one.