TrueLayer Data API

Overview

This is infrastructure for software makers, not a consumer-facing money-management app. Data from integrated banks can support account verification, aggregation, affordability checks, rewards, insights and money management. Those are building blocks for a customer’s own service, rather than finished features for end users.

TrueLayer was founded in 2016 and is headquartered in London, United Kingdom.

Key features

Bank and card data

The API covers identity, accounts, credit cards, transactions, balances, standing orders and direct debits. Account details can include a holder’s name, account number and IBAN; card responses can include network, last four digits and cardholder name, alongside card-level balances and transactions. That breadth suits products that need a wider financial picture, though the data is limited to integrated banks.

Responses use JSON, with a listed real-time refresh frequency. Identical requests are cached for one hour, and persistently unreasonable request volumes may be throttled or blocked. Teams should account for that cache when designing refresh expectations rather than treating every request as a fresh bank lookup.

Connection and authentication

Connection options include redirect, embedded, app-to-app and API-only/custom UI. TrueLayer offers a customizable ready-made user journey, or a custom authentication flow for regulated customers. Non-regulated customers and agents of TrueLayer customers must use the customizable flow, so the custom route is not available to every integrator.

Developer, security and support

Client libraries are available for Node.js, Python, Java and .NET, alongside a Web SDK, mobile SDKs and hosted payment-page options. TrueLayer requires HTTPS and says data is encrypted at rest and in transit using protocols including TLS 1.2. It states that it holds ISO 27001 certification, Cyber Essentials and Cyber Essentials Plus accreditation, and SOC 2 Type 2 coverage for 1 February 2023 to 31 January 2024. It is regulated by the UK Financial Conduct Authority; TrueLayer (Ireland) Ltd is authorised by the Central Bank of Ireland.

Support runs Monday to Friday, 8 AM to 8 PM GMT, through Help Centre chat and tickets. That provides weekday coverage, rather than round-the-clock support.

Pricing

The free Sandbox is useful for integration work that can proceed against mock data, but it cannot validate a live production connection. Production is for businesses ready to complete KYB/KYC and negotiate commercial terms; volume- and use-case-based pricing means it is not a fixed-cost option for early budgeting.

Platforms

TrueLayer Data API supports Android, iOS, web and API integrations. The client libraries and frontend options give teams several ways to connect their application, while the supported connection methods range from hosted-style redirect and embedded flows to app-to-app and API-only/custom UI.

Who it's for

Choose TrueLayer Data API if you are building a regulated or commercial financial product that needs bank identity, account, card or transaction data and can meet production onboarding requirements. It is a poor fit for an individual seeking a ready-made budgeting app, or for a team that needs real production data before entering a commercial arrangement.

Pros and cons

• Broad data coverage: identity, account, card, balance, transaction and payment-instruction data can support more than basic account aggregation.
• Flexible integration routes: redirect, embedded, app-to-app and API-only/custom UI allow teams to fit connection into different product designs.
• Developer choice: four listed client-library languages plus web and mobile SDKs reduce the need to build every integration component from scratch.
• Sandbox stops at mock data: it supports testing, but offers no production access on the free plan.
• Production has commercial gates: a signed agreement and KYB/KYC are required, with pricing based on volume and use case.
• Authentication flexibility has limits: non-regulated customers and agents must use TrueLayer’s customizable journey rather than a custom authentication flow.

Alternatives

For a broader shortlist, see Open Banking Payment Platforms and Bank Connectivity Software.

• Plaid is worth considering if an eligible US or Canada team created on or after April 15, 2026 needs free access to up to 10 Production Items during its trial; unlike TrueLayer’s Sandbox, that offer is production access, but eligibility is limited.
• Trustly is another paid option across Android, API, iOS and web; merchant pricing requires contacting sales.
• Volt is another paid option across Android, API, iOS and web, with custom pricing.
• TrueLayer Payments is the related paid TrueLayer product to compare if payment functionality is the focus; it has no free plan.
• Fire Payments API is another paid Android, API, iOS and web option; its API access requires contacting Fire’s sales team for an account, with customized corporate pricing on request.
• Finexer offers API and web access, with Standard and Enterprise plans at custom pricing.
• Noda offers API and web access with transaction-based pricing tailored to business needs.
• Salt Edge Payment Initiation is another API and web option, with pricing available through sales.

Verdict

TrueLayer Data API is a strong choice for businesses that need diverse bank data, practical integration options and can qualify for production access. Its main advantage is the breadth of data and routes into an application; its main drawback is that the free tier is mock-only and live use depends on commercial onboarding and custom pricing. Look elsewhere if you need production experimentation without those commitments.