Open Bank Project

Open Bank Project is a financial API platform for organisations that need to expose, secure, and manage banking data. It is best suited to banks, regulators, FinTechs, and development teams working across several open-banking use cases. The free synthetic-data sandbox lowers the barrier to evaluation, while production deployment requires choosing between AGPL and a custom commercial licence.

Overview

OBP combines API creation, testing, and management with tools for developers and operators. Its catalogue contains more than 550 endpoints covering accounts, payments, KYC, foreign exchange, and products. That breadth is valuable when one programme must support multiple financial workflows; a team needing only a small, narrowly defined integration may find the wider platform more than it needs.

The API gateway adds traffic control, access control, and rate limiting, giving organisations practical ways to govern exposure as usage grows. OBP connects to existing systems through prebuilt endpoints, and a described implementation uses Keycloak and RabbitMQ. Those examples indicate integration options, but each organisation still needs to match the platform to its own architecture.

TESOBE GmbH, a Berlin-based consulting firm in Berlin, Germany, has developed OBP since 2010. The project can be cloned and run locally as well as tried through a browser, which suits teams that require control over deployment.

Key features

The developer portal, API manager, browser-based API explorer, analytics, and monitoring cover the main stages from publishing an API to observing its use. This is a stronger fit for teams that want developer access and administrative oversight in one environment than for developers seeking only a lightweight endpoint-testing utility.

Prebuilt authentication and consent capabilities are designed to secure APIs in line with regulatory requirements. They can reduce the need to assemble those controls from scratch, particularly for regulated financial projects. Support for Berlin Group, UK Open Banking, and Open Bank Project standards, with regional coverage including Europe, Mexico, Brazil, Bahrain, Saudi Arabia, and Australia, helps organisations working across those frameworks.

The sandbox uses test or synthetic data, allowing application and API experiments without connecting to live customer information. TESOBE also provides personalised open-banking training for bank, regulator, and developer teams, a useful service when implementation involves several stakeholder groups.

Pricing

Public API Sandbox

The Public API Sandbox costs nothing. Developers can use it to test with synthetic data. It is the appropriate starting point for prototyping, learning the API catalogue, or validating an integration before committing to production licensing. Its purpose is testing rather than a route to live financial-data access.

Commercial License

The Commercial License has custom pricing; organisations must contact TESOBE for details. Commercial licensing is the relevant path when AGPL terms do not suit an organisation’s legal or operational requirements. The published plans do not provide a fixed seat allowance, usage quota, trial period, or renewal term, so those conditions need to be established during the licensing discussion.

OBP also offers an AGPL option. That can suit organisations able to work within AGPL obligations, while companies requiring proprietary licensing should budget for a negotiated commercial agreement rather than assume the free sandbox covers deployment.

Platforms

OBP supports API, Linux, self-hosted, and web use. Local cloning and execution support organisations that need deployment control; browser access is useful for exploring the service without first installing a local environment. The platform mix is centred on API infrastructure rather than a consumer mobile application.

Who it's for

Financial institutions can use OBP to expose data through standardised endpoints and apply gateway controls. Regulatory authorities may value the standards coverage and training support when overseeing open-banking programmes. Global development companies and FinTechs are named users as well, particularly when they need a broad catalogue and a repeatable environment for application testing.

It is less compelling for a small project that needs one provider’s connectivity only, or for a consumer looking for a banking app rather than API infrastructure.

Pros and cons

• Pros: More than 550 endpoints span accounts, payments, KYC, FX, and products, supporting varied financial-data projects.
• Pros: Gateway traffic, access, and rate controls provide operational governance as APIs are exposed.
• Pros: A free synthetic-data sandbox, browser explorer, and local deployment path make evaluation flexible.
• Pros: Authentication, consent features, and support for several open-banking standards address regulated integration work.
• Cons: Commercial pricing is custom, so organisations cannot compare production cost from a published rate card.
• Cons: The free sandbox is for developer testing with synthetic data, not a stated production service.
• Cons: AGPL licensing may not fit organisations that require proprietary terms, leaving commercial licensing as the alternative.

Alternatives

Consider MX when a freemium service with Android, iOS, web, and API access is preferable; its free account covers 100 users, while the MX Platform uses requested-demo pricing.

TrueLayer Data API is an alternative for teams wanting mobile and web access alongside API connectivity, with a free mock-data sandbox and volume- and use-case-based production pricing.

Choose Belvo when unlimited sandbox testing and a defined Launch plan are more useful, accepting that production access requires a paid plan.

CAMSfinserv Account Aggregator suits consumer account-aggregation scenarios, with free consumer use and separately charged financial-institution access.

Envestnet | Yodlee offers a free registered sandbox with five preconfigured users and sample data, but no live-site linking.

viaBanking Banking API provides a no-card, free sandbox for sample-data AIS and PIS calls, with production priced by usage.

Brankas is an alternative supporting cloud, on-premise, or hybrid deployment options across its plans.

Lean Technologies is another paid option with Android, iOS, web, and API platforms.

For a wider comparison, browse Bank Connectivity Software.

Verdict

Choose Open Bank Project if you are a bank, regulator, FinTech, or development organisation that needs broad financial-API coverage, governance controls, standards support, and a free synthetic-data environment. Its main advantage is the combination of catalogue breadth and deployment flexibility. Look elsewhere if you need transparent production pricing, a consumer-facing mobile product, or licensing that avoids both AGPL obligations and a negotiated commercial contract.