Caixa Popular API Access for Spain | open-banking.io

Pull live Caixa Popular data into your own systems without wrestling with eIDAS certificates or bespoke bank integrations. open-banking.io gives developers and finance teams a single, standardised way to sync Caixa Popular accounts, balances and transaction history through one clean API — the same interface used across 2,600+ European banks.

Whether you're building reconciliation tooling, a personal finance dashboard or automated bookkeeping, the connection to Caixa Popular behaves identically to every other institution on the platform, so you write your integration once and reuse it everywhere.

How to connect Caixa Popular

1. Create an open-banking.io account and generate your API key.
2. Start an authorisation session and select Caixa Popular (BIC BCOEESMM159) as the target institution.
3. Redirect the account holder to Caixa Popular's own login to approve consent — you never touch their credentials.
4. Receive the access token and begin calling the accounts, balances and transactions endpoints.

What data you can access

• Accounts — identifiers, IBANs and account metadata for both personal and business accounts.
• Balances — current and available balances, refreshed on demand.
• Transactions — booked and pending entries with amounts, dates, counterparties and references.

Consent and coverage

Caixa Popular supports both personal and business account access. A single consent stays valid for up to 180 days before the customer needs to re-authorise, so long-running sync jobs keep working without constant reconnection prompts.

Privacy by design

open-banking.io is zero-knowledge: authentication happens directly between the customer and Caixa Popular, and we never store banking credentials. There are no eIDAS or QWAC certificates for you to buy, host or renew — the platform handles the regulated PSD2 plumbing so you can focus on your product.

Pricing

Access starts at roughly EUR 3 per month, with the same flat, predictable pricing whether you connect one bank or hundreds across the EU and UK.

Is a certificate required to access Caixa Popular?

No. open-banking.io is certificate-free — you don't need a QWAC, QSEAL or any eIDAS setup to connect.

Can I access business accounts at Caixa Popular?

Yes. Both personal and business account types are supported through the same API endpoints.

How often do I need to renew consent?

Consent lasts up to 180 days. After that, the account holder simply re-authorises to keep the connection active.

Ready to start? Explore the full platform at open-banking.io.