Powering high-growth operations with open banking

Asima delivers the regulated rails for account access and instant bank payments, trusted by UK fintechs, merchants and platforms that scale.

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API-driven open banking integrations

Automate instant bank transfers, gather account details, check account balances, verify identities and more. Built for speed, scale, and simplicity, so you can focus on your product, not payments infrastructure.

Bank payments, not card rails

Build direct account-to-account payment flows without the cost, chargebacks, or complexity of legacy schemes. Lower friction for users, lower fees for you. No intermediaries means no surprises.

Real-time account access

Read balances and transactions with user consent. Ideal for onboarding, reconciliation, and smarter financial journeys. Turn raw data into insights that reduce risk, personalise experiences, and accelerate decision-making.

Regulated and compliant

We’re an FCA-authorised provider of account access and payment services. Everything we offer is built and operated by us, giving you complete control, visibility, and compliance.

UK-first, developer-ready

Clean APIs, clear documentation. Asima is purpose-built for UK platforms, apps, and fintechs. Go from sandbox to live with confidence, backed by responsive support and proven reliability. 

await asima.instant_payment.create({
        amount: 20000,
        currency: "GBP",
        payment_reference: "BILL-REF-12345",
        from_account: {
            identification: "04000412345678",
            name: "John Smith",
            bank_id: "monzo",
        },
        to_account: {
            identification: "53612112345678",
            name: "The Bill Payments Company",        
        },
        initiated_at: new Date().toISOString(),
    });

Account Information Service (AIS)

Asima’s AIS offering enables regulated, read‑only access to end‑user bank account data across multiple institutions, with explicit consumer consent. Operating under PSD2 and FCA authorisation as an AISP, we pull transactional history, balances and standing order details via bank‑exposed APIs.

Once consent is granted, Asima connects securely to the customer’s ASPSP using strong customer authentication (SCA) and fetches data directly from the source.

We normalise and enrich the raw feed to drive financial analytics, reconciliation or credit underwriting workflows. So rather than screen‑scraping or indirect feeds, our platform provides real‑time, standardised account insight.

This empowers businesses to build tools like multi‑account dashboards, automated bookkeeping, risk scoring or onboarding flow, while offloading the regulatory, compliance and security burden to Asima as the authorised data aggregator.

Payment Initiation Service (PIS)

Asima’s PIS functionality permits client‑triggered, authenticated payment initiation directly from the customer’s bank account to a payee, again under PSD2/FCA oversight as a licensed Payment Initiation Service Provider (PISP).

We interface with ASPSPs (banks) via the open banking scheme, prompting the payer to authenticate through their banking app or credentials using Strong Customer Authentication (SCA). Once the user authorises, our APIs issue payment instructions in either single or repeatable formats.

The funds flow is direct bank‑to‑bank and supports seamless in‑app or in‑checkout real‑time payments, reducing friction and lowering costs for merchants compared to card networks.

Asima handles consent orchestration, callback status, and settlement events, abstracting the mechanics from your application. This allows you to embed payment flows without PCI scope or acquiring integration complexity.

More than an API

Asima isn’t just infrastructure. We work with your team to design, build, and deliver secure, scalable open banking solutions. From strategic input to hands-on implementation, we’re a long-term technical partner, not just a provider.

  • Discovery sprint

    Map your architecture, scope your use case. A focused technical engagement to assess integration points, define requirements, and accelerate time to value.

  • Fixed-price builds

    From checkout flows to embedded dashboards. We deliver robust, production-grade components on a fixed scope and timeline, built to meet your exact specifications.

  • Day-rate consulting

    Need an open banking expert on your team this month? Embed Asima’s domain specialists into your workflow for architecture reviews, API integration, or compliance planning.

  • Retained advisory

    Ongoing support, regulatory input, roadmap shaping. A flexible engagement model for scaling businesses who need senior technical and strategic input as they grow.

How it works

From scoping to scale, Asima provides the regulated infrastructure and technical support to move fast, without cutting corners.

Plan

Start with a discovery call or structured technical sprint to explore your goals, architecture, and data needs. We help identify where open banking adds real value—whether it’s improving onboarding, enabling real-time payments, or unlocking financial insights.

Build

Integrate via our platform or engage us for fixed-scope delivery of your MVP, payment flows, or data services. With clean APIs, clear documentation, and expert support, your team can stay focused on product while we handle the complexity beneath the surface.

Scale

Move to live with confidence, processing real payments and accessing account data on fully compliant rails. Asima is engineered for reliability, security, and scale. We're trusted by fast-moving businesses and large charities across the UK.

 
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