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Branch bank · Setup guide

Connect Postbank to Claude

This guide gives Claude read-only access to your Postbank account. You sign in to Postbank once in its own web form, add BankingMCP to Claude, and ask about balances and transactions. No app, no code.

BankingMCP€5 a month

Short answer

Yes, Postbank works. It is in the bank directory BankingMCP connects through, via XS2A (PSD2). Your assistant gets your balance and transactions, read-only, for €5 a month after a 7-day free trial. Nothing to install. Claude reads your Postbank accounts through BankingMCP: list accounts, read balances, search transactions. It cannot move money.

Connect Postbank to Claude now →

7 days free, then €5 a month. Cancel anytime.

Guide: connecting Postbank to Claude

Two parts, about five minutes: first you share your Postbank accounts with BankingMCP, then you add BankingMCP to Claude.

Share Postbank with BankingMCP

  1. Create a BankingMCP account and start the 7-day free trial. You add payment details at Stripe, and you pay nothing if you cancel within the trial.
  2. In BankingMCP, search for “Postbank” and sign in to Postbank in its own web form with Postbank ID / FKN. Your banking credentials never reach us.

Add BankingMCP to Claude

  1. In Claude, open Customize → Connectors, click + and choose Add custom connector.
  2. Name it BankingMCP, enter the address shown here and click Add.
  3. Click Connect, sign in with your BankingMCP email address and approve the connection.
  4. In a chat, enable BankingMCP in the tools menu and ask about your accounts.
  5. Ask Claude your first question, for example: “What's the balance on my Postbank account right now?”
MCP address
https://banking-mcp.com/api/mcp

This address is the same for everyone, so it isn't a secret. Claude asks you to sign in and you approve the connection here.

Full Claude guide →

Good to know about Postbank

  • Postbank asks for your Postbank ID and password. You approve with BestSign, as in online banking.
  • Search for “Postbank” in the connection form. Postbank operates under 73 bank codes; if its name doesn't find it, your account's bank code will.
  • If you share several accounts at Postbank, your assistant sees all of them. You can add more accounts later with one click.
  • Banks ask you to confirm access again after a set period. BankingMCP shows you when the Postbank consent expires; after that you log in once more.

Good to know about Claude

  • Works on all Claude plans; the free plan allows one custom connector. On Team and Enterprise, an owner adds the connector under Organization settings → Connectors first.
Connect Postbank to Claude now →

7 days free, then €5 a month. Cancel anytime.

Check Postbank

Answered live from the bank directory. If your exact institution shows up here, BankingMCP can connect to it.

Searching…

Postbank runs on Deutsche Bank's platform

Since July 2023 Postbank accounts run on Deutsche Bank's systems – about twelve million customers moved in that project. That's why login and approval work as at Deutsche Bank: Postbank ID, password and BestSign.

For your assistant nothing changes: it reads balances and transactions of the accounts you share, read-only.

As of November 2026, from Postbank's online banking form and press reports on the Unity migration. Banks change their products; check with the bank for the current state.

Postbank: BIC, bank code and connection

BIC
PBNKDEFFXXX
Bank code
10010010
Seat
Berlin
Connection
XS2A (PSD2)
You log in with
Postbank ID / FKN
Pending transactions
Available
Standing orders
Available
Show all 73 bank codes

Postbank operates under 73 bank codes. Whichever one your account uses, it connects the same way.

  • Aachen59010015
  • Aichach59010038
  • Alzey59010028
  • Amberg59010074
  • Arnsberg59010019
  • Aschaffenburg59010021
  • Bad Dürkheim59010069
  • Bad Homburg59010023
  • Bad Vilbel59010029
  • Bayreuth59010033
  • Bergheim59010037
  • Bergisch Gladbach59010039
  • Berlin10010010
  • Bielefeld59010057
  • Bocholt59010042
  • Bochum59010044
  • Bonn38010053
  • Bramsche59010054
  • Braunschweig59010053
  • Bretten59010031
  • Bruchsal59010016
  • Brühl59010024
  • Cham59010036
  • Delmenhorst59010035

and 49 more

From our copy of the bank directory, so it can lag behind a change at the bank. The check above is live.

What Postbank looks like in Claude

You

Which subscriptions are still charging my Postbank account, and what do they cost a year?

Claude

search_transactions· Postbank · last 12 months

Seven subscriptions charged your Postbank account in the last 12 months, together €1,086.40 a year. Two of them do the same job: you pay for two cloud storage plans.

Example conversation with fictional names and amounts.

What you can ask Claude about Postbank

  • “What's the balance on my Postbank account right now?”
  • “How much did I spend on groceries last month?”
  • “Which subscriptions are still charging my Postbank account?”
  • “Did both tenants pay their rent this month?”

Connecting Postbank through regulated bank access

  • Read-only. Over MCP your assistant only gets read tools: it can list accounts, read balances and search transactions. There is no payment tool in this connection.
  • You log in at Postbank itself. Access runs through finAPI, a PSD2-licensed account information service, and your banking credentials never reach BankingMCP.
  • BankingMCP doesn't keep your balances and transactions; it fetches them for each question your assistant asks. Only account details and an access log, kept for 90 days, are stored.
  • Every assistant gets its own address. Deactivate one and its access to your Postbank account stops immediately.

Questions about Postbank

What is MCP?
The Model Context Protocol is an open standard that lets AI assistants like Claude or ChatGPT use outside tools. BankingMCP makes your Postbank account available as an MCP server, so your assistant looks up balances and transactions directly instead of you uploading bank statements.
Does BankingMCP support Postbank?
Yes. Postbank is listed in the bank directory with a XS2A (PSD2) interface, which is how BankingMCP connects. The live check on this page confirms your exact institution.
Do I need to install an app to use Postbank with Claude?
No. BankingMCP runs in the browser on any computer or phone. You connect Postbank once, then add one address to Claude.
Does my assistant see my Postbank balance?
Yes, along with your transactions. Your assistant reads the balance when it asks, together with the time Postbank last delivered it.
How up to date are my Postbank transactions?
Your assistant fetches your balance and transactions with every question and gets them as Postbank last delivered them, with a timestamp. If the Postbank consent expires, it only sees the last state until you log in again – and tells you so.
Can I use Postbank together with other banks?
Yes. Connect up to 50 accounts across several banks, personal and business. Your assistant answers across all of them, and the price stays at €5 a month.
What do I need to log in to Postbank?
Postbank's own login form asks for: Postbank ID / FKN. You enter them at Postbank, not at BankingMCP and not in the chat.
Does my assistant see my Postbank login?
No. You log in at Postbank in its own web form. Neither BankingMCP nor your assistant ever receives your PIN, password or TAN.
Do I need programming skills to use Postbank with Claude?
No. You connect Postbank in the browser and add one address to Claude. Every assistant has a step-by-step guide.
Can my assistant transfer money from my Postbank account?
No. The connection is read-only and has no payment tool. Payments are planned as a separate feature, where you approve every transfer in your own banking app.
What happens if I want to cut off access?
Each assistant has its own address. Deactivate or remove the one you gave Claude and it stops working immediately, without touching your other assistants.

Banks related to Postbank

The same connection works for these. Each guide is set up for Claude.

More assistants for Postbank

Same Postbank connection, another assistant. Each guide follows that assistant's own settings.

Use Claude with another bank

Every bank runs on the same plan for €5 a month. Connect several and Claude answers across all your accounts at once.

All banks →

Ready to connect Postbank to Claude?

7 days free, then €5 a month. Cancel anytime.

Connect Postbank to Claude now →