Bulder App Integration Advert — OpenData / OpenFinance API Delivery

Authorized protocol analysis + PSD2/OpenBanking-style connectors to export transactions, balances, bills (eFaktura/AvtaleGiro), receipts metadata, and mortgage/savings insights with audit-ready delivery.

From $300 · deliver first / pay after satisfaction
OpenData · OpenFinance · OpenBanking · Protocol Analysis

Connect Bulder data into your system with compliant, usable API source code

Bulder combines consumer banking, bill handling, and personal finance signals. We help your product securely ingest those signals using authorized consent flows and a normalized data model designed for analytics, reconciliation, and reporting.

Transactions & statements

Export activity like account transfers, payment records, and settlement traces for period-based reporting and reconciliation workflows.

Bills, invoices & schedules

Integrate invoice and upcoming-payment data mapped from Bulder’s eFaktura and AvtaleGiro experiences for automation and reminders.

Receipts, documents & metadata

Ingest receipt records (manual or automatically coming via roadmap cooperation) to support expense classification and audit trails.

Mortgage & savings signals

Expose mortgage interest tier inputs (belåningsgrad-based changes), savings goals, and fund-related context for dashboards and planning.

Recent feature that improves data freshness

In Bulder’s roadmap update (July 2024), they described work toward automatic receipt loading: a valid receipt should appear in the app shortly after payment, supported by cooperation with external actors. When available, this reduces manual OCR intake and makes near-real-time expense pipelines easier to operate.

Feature modules (what we integrate)

Each module is implemented with a concrete data target and a practical use case so your engineers can validate the integration quickly and your product can ship with confidence.

Integration design principles

  • Minimize data exposure: request only what your workflow needs (field-level permissions).
  • Normalize early: convert Bulder-specific structures into a reusable OpenData model.
  • Prefer deterministic reconciliation: link items via reference IDs, amounts, and date windows.

Transaction history API

Ingest account and payment activity into a normalized “ledger” for period analytics, spending breakdowns, and bank reconciliation.

Use: import into reporting dashboards; match statements by `from_date/to_date` and transaction type mapping.

Balance & liquidity sync

Expose balances with timestamps and currency context so your users can see net position trends before bill posting dates.

Use: cash-flow planning and “estimated available funds” views.

eFaktura + AvtaleGiro bills integration

Map invoice objects and upcoming payment schedules (including stored invoice status) to support reminders and “bill-to-expense” automation.

Use: reconcile paid vs unpaid bills and generate exportable lists.

Receipt archive & OCR metadata ingestion

Collect receipt records and extract key fields (vendor, date, totals) so expense categorization and audit evidence are maintained over time.

Use: receipt-driven expense matching for VAT/expense reports or investor-grade logging.

Mortgage smart pricing signals

Integrate mortgage context used for automatic rate adjustments based on belåningsgrad changes and repayment events.

Use: interest cost projections and “rate change explanation” views for end users.

Mobile payment rails context

Normalize payments tied to supported wallet experiences (including Apple Pay and Google Pay, plus Bulder-supported watch payments) into your unified transaction timeline.

Use: categorize payment channel and support settlement discrepancy investigations.

Screenshots

Click any thumbnail to view a larger version. This section is powered by the screenshots provided for Bulder.

Core benefits for OpenData/OpenFinance teams

Building around Bulder data is most valuable when you can reliably map finance objects into a consistent taxonomy, then deliver them through your own API contract with explicit consent and traceability. Our work focuses on making that pipeline operable in production.

  • Field-level mapping between Bulder screens (transactions, bills, receipts, savings) and an OpenData “entity model”.
  • Reconciliation logic designed for real-world mismatches (date cutoffs, amount formatting, duplicated receipts).
  • Export formats for integration: JSON payloads plus optional CSV/Excel-style reporting endpoints.
  • Operational safety: rate-limited fetching, retry strategy, and deterministic error codes.

API Integration Instructions

Use the snippets below as an implementation template for a PSD2-style consent + AIS transaction extraction workflow. We deliver code that follows these patterns so your team can review, test, and extend.

1) Consent (AIS) creation
POST /psd2/consents
Headers:
- PSU-ID: <user identifier linked to BankID session>
- X-Request-ID: <uuid>
- Authorization: mTLS certificate auth (QWAC) + TPP token
Body:
{
  "access": [
    { "type": "AllAccounts", "iban": null },
    { "type": "SpecificAccounts", "iban": "NO12XXXX..." }
  ],
  "frequencyPerDay": 1,
  "validUntil": "2026-12-31",
  "combinedServiceIndicator": "AIS"
}
Response: { "consentId": "...", "consentStatus": "AwaitingSCA", "scaMethods": [...] }

Data inventory (OpenData perspective)

The list below connects Bulder’s end-user capabilities to integration-ready data types, using your product’s reconciliation and analytics needs as the driving requirements. We avoid generic “export everything” patterns and instead define granularity that supports audits and repeatable results.

Data type Source (Bulder capability) Granularity Typical use
Account balances Account overview, liquidity screens Timestamped balance snapshots Cash-flow dashboards, pre-bill estimation
Transaction ledger Payments, transfers, card/wallet-related records Item-level, mapped to a normalized type taxonomy Spend analytics, reconciliation, fraud/duplicates review
eFaktura invoice objects Electronic invoices & payment-ready items Invoice header + status + due date + amount Automated bill capture and “paid/unpaid” reporting
AvtaleGiro schedule Upcoming automatic payments Recurring payment events + next execution date Budget planning, reminder workflows, cost forecasting
Receipt records & OCR fields Receipt scanner and kvittering archive Receipt-level metadata + totals + vendor + purchase time Expense classification, audit evidence, compliance-friendly history
Savings goals (Sparekonto) Personalized savings goals with media Goal-level progress, schedule, deposit events Goal analytics, personalized reporting, habit-building insights
Fund/portfolio context Long-term saving / fund features Holdings summary + transaction categories OpenFinance portfolio reporting, allocation tracking
Mortgage interest signals Smarter mortgage rate logic (belåningsgrad) Tier thresholds + effective interest changes Interest projection, explainable pricing and planning

Integration note on completeness

Bulder’s bill and receipt experiences include both manual capture and roadmap-driven automation. Our adapter design supports progressive enablement: you can start with invoice/status export and expand into automatic receipt loading when it becomes available.

Typical integration scenarios (end-to-end)

Below are concrete flows that map Bulder data into OpenData/OpenFinance outputs your stakeholders can understand. Each scenario includes the business context and the fields your engineers typically normalize.

1) Personal finance dashboard with transaction export

Context: Users want a unified timeline of income and expenses, including payments initiated via supported wallet experiences.

API: Transaction history API + statement window queries.

OpenData mapping: Normalize into `ledger.items[]` with `amount`, `currency`, `bookingDate`, `counterparty`, and `paymentChannel`.

2) Bill reconciliation for unpaid vs paid invoices

Context: A fintech workflow needs “what is due” and “what is already paid” to reduce missed bills.

API: eFaktura invoice objects + invoice status export.

OpenFinance mapping: Deliver `bills.invoices[]` with `dueDate`, `amount`, `status`, and `referenceId` for reconciliation to accounting entries.

3) Receipts-to-expense pipeline (with OCR metadata)

Context: An expense management product needs evidence for audits and a consistent vendor taxonomy.

API: Receipt archive + metadata ingestion (manual capture today, roadmap automation later).

OpenData mapping: Store `receipts[]` with `vendor`, `purchaseTime`, `total`, and `ocrConfidence` so downstream categorization can be deterministic.

4) Mortgage rate explainability and interest projection

Context: Borrowers want to understand why their mortgage rate changes without negotiating manually.

API: Mortgage smart pricing signals (belåningsgrad tier and effective interest change).

OpenFinance mapping: Output `mortgage.rateEvents[]` to power “rate down” explanations and cash planning reports.

5) Savings goals analytics with media-personalized goals

Context: A consumer app wants progress tracking for multiple savings goals (including goal personalization media).

API: Savings goal sync + deposit events.

OpenData mapping: Provide `savings.goals[]` with `goalId`, `targetAmount`, `currentBalance`, and goal timeline events.

Technical implementation (pseudo-code)

Our delivery pattern uses a consent-aware “integration adapter” to pull normalized finance entities. Below examples show the interface shapes you can expect from our source-code output.

Snippet A: AIS transaction pull
// Step 1: ensure consent exists and is valid
consent = psd2.createConsent({
  permissions: ["AIS:readAccounts", "AIS:readTransactions"],
  validUntil: "2026-12-31",
  frequencyPerDay: 1
})

// Step 2: request transactions within a window
resp = psd2.fetchTransactions({
  consentId: consent.consentId,
  accountIban: "NO12XXXX...",
  fromDate: "2026-01-01",
  toDate: "2026-01-31",
  bookingStatus: "BOOKED"
})

// Step 3: normalize to OpenData ledger
ledger = resp.transactions.map(t => ({
  id: t.transactionId,
  amount: { value: t.amount.value, currency: t.amount.currency },
  bookingDate: t.bookingDate,
  merchant: t.merchantName ?? t.counterparty.name,
  tags: [t.paymentType, t.serviceCode].filter(Boolean)
}))

This mapping creates stable IDs and consistent date fields so reconciliation jobs can re-run without “drift”.

Snippet B: Error handling + retry strategy
function withRetry(fn){
  for (attempt=1; attempt<=3; attempt++){
    try { return fn(); }
    catch(e){
      if (e.code in ["RATE_LIMIT","NETWORK_TIMEOUT"]) sleep(backoff(attempt));
      else throw e;
    }
  }
}

try{
  result = withRetry(() => psd2.fetchBalances({ consentId, accountIban }))
}catch(e){
  // Produce integration-safe error output
  throw {
    errorCode: "BULDER_AIS_BALANCE_PULL_FAILED",
    httpStatus: 502,
    message: "Balance sync failed; check consent validity and network connectivity.",
    details: { consentId, attempt }
  }
}

For production, we return deterministic error codes so your UI can guide users to reconnect consent when needed.

Snippet C: PIS / payment status confirmation (optional)
// If your workflow needs payment initiation support:
pis = psd2.createPaymentInitiation({
  consentId,
  instructedAmount: { value: 120.50, currency: "NOK" },
  creditor: { name: "Merchant / Payee", account: { iban: "NO.." } },
  remittanceInformation: "Invoice #KID-..."
})

// For funds confirmation:
confirm = psd2.confirmFunds({
  paymentId: pis.paymentId,
  instructedAmount: pis.amount
})

// Webhook/polling bridge in your backend:
onPaymentUpdate(event => {
  // Update ledger item with "status=CONFIRMED"
  store.updateTransactionStatus(event.paymentId, event.status)
})

What we deliver with the code

  • A normalized `schemas/` mapping for transactions, invoices, receipts, and savings goals.
  • Consent lifecycle helpers (create, refresh, revoke) and recommended session rotation.
  • Integration test harness with synthetic fixtures and replayable fixtures.
  • Audit log guidance so your compliance review can trace “who accessed what, when”.

Compliance & privacy

Bulder operates under Norwegian/EU expectations for regulated financial data access. Our integration approach follows authorization-first design to reduce unnecessary exposure.

PSD2 / OpenBanking-style access

Account Information Services (AIS) and Payment Initiation Services (PIS) require formal authorization, consent scopes, and auditable consent records.

GDPR data protection

We design for data minimization, purpose limitation, and secure processing practices consistent with GDPR principles for personal data.

eIDAS & strong authentication

For PSD2 technical security patterns, QWAC (eIDAS) and mutually authenticated TLS are used in PSD2 API access models, alongside strong customer authentication requirements.

If your integration needs to store receipts or document metadata, we also recommend retention controls, encryption at rest, and role-based access inside your backend. We can include these controls in the delivered source code and configuration templates.

Data flow / architecture

A simple, production-friendly pipeline looks like this:

  • Client App requests a scoped authorization session (for transactions, bills, receipts, or savings data).
  • Integration Adapter performs protocol analysis and translates consent into PSD2 NextGenPSD2-style requests.
  • Normalization Layer converts provider-specific fields into OpenData entities, then stores them with stable IDs.
  • Delivery APIs expose your contract for analytics, reconciliation, and export (with audit logs and safe retry behavior).

Market positioning & user profile

Bulder is a Norwegian consumer finance brand within the Sparebanken Vest group. In practice, most users are individuals managing everyday bills, savings goals, receipts, and mortgage costs on mobile Android and iOS. That means the integration value is strongest for products that want “clean, user-authorized finance signals” rather than raw banking screens. Typical integration partners include fintech dashboards, expense/accounting tooling, and OpenFinance data providers building cross-bank analytics in Europe.

In the integration landscape, ecosystem products such as Fiken (bank connectivity for accounting workflows) and Tripletex (PSD2-based bank integration) illustrate how bank data can be used for automated reconciliation and cash visibility. We bring the same operational patterns to Bulder-specific objects like eFaktura/AvtaleGiro invoices and receipts metadata.

About us, deliverables, and contact

About our studio

We are a technical service studio specializing in app interface integration and authorized API integration for OpenData/OpenFinance use cases. Our team combines hands-on mobile application experience with fintech security and PSD2-style integration engineering.

  • Protocol analysis that produces maintainable adapters and field mapping docs.
  • Authorized data access design with consent lifecycle guidance.
  • API source code delivery: backend services + integration SDK stubs where needed.
  • Test plans and operational notes for “first integration run” success.

Contact information

Send us the target app name (already provided as Bulder) and your concrete integration requirements (data types, frequency, export format, and your authorization constraints).

Go to contact page

What you will receive next
A short proposal: integration scope, implementation plan, and an initial deliverable checklist mapped to OpenData/OpenFinance outputs.

Deliverables (practical)

OpenAPI-style contract for your API endpoints, protocol analysis notes, consent + AIS/PIS adapter code, and integration test plan.

Transparent pricing

Services start at $300. We can deliver the first working integration and then you pay after you confirm satisfaction.

Documentation included

Field mapping tables, data inventory docs, and recommended retention/security settings for receipts and personal finance data.

Workflow

  1. Scope clarification: list required data types (transactions, invoices, receipts, balances, mortgage/savings signals) and update frequency.
  2. Protocol analysis & integration design: map app flows to adapter endpoints and define normalized schemas.
  3. Development & internal validation: implement consent-aware requests, normalization, and reconciliation checks.
  4. Deliver documentation + runnable code: include API contract, test harness, and operational guidance.
  5. Typical initial delivery: 5–15 business days depending on complexity and any third-party authorization steps.

FAQ

What do you need from us?

We need your target integration scenario (e.g., “transaction export + bill reconciliation”), desired frequency (daily/weekly), and whether you prefer JSON APIs or spreadsheet-style exports.

How do you keep it compliant?

We use explicit consent scopes, GDPR-aligned data minimization, audit log patterns, and PSD2-style strong authentication expectations (mTLS/QWAC and SCA patterns in integration models).

Can we start small?

Yes. Many projects start with transaction ledger export and invoice status, then expand to receipts ingestion and mortgage/savings explainability signals once the base pipeline is stable.

Original App: Bulder overview (collapsed)

Bulder is a future-focused finance app that helps users see what is happening with their finances ahead of time. It recognizes subscriptions, bills, and incoming income, then turns them into a clear, actionable overview.

The app includes a bill scanner (so invoices can appear pre-filled for review), an eFaktura experience for electronic invoices stored for both paid and unpaid items, and an AvtaleGiro flow that pays bills automatically on the due date. Users also get reminders and notifications for upcoming payments and planned account movements.

Bulder’s receipt collector lets users capture receipts and keep them searchable in the app. It also supports mobile payment experiences including Apple Pay and Google Pay, plus watch-based payment methods such as Garmin Pay and Fitbit Pay (where available on supported devices).

In addition to day-to-day finance, Bulder offers a mortgage product designed to be “smarter pricing”: the rate automatically steps down as the loan-to-value (belåningsgrad) decreases when the property value rises or when the user repays. Bulder states that the app is part of Sparebanken Vest, operating under Sparebanken Vest’s banking license; it is not an independent financial institution.

For customers, the important point is deposit guarantee coverage under Sparebanken Vest’s deposit guarantee up to 2 million NOK across deposits in the Bulder concept and Sparebanken Vest. Users can also create personal saving goals with customized images and GIFs, save with interest on a savings account, or invest in funds if they prefer.

Bulder has been awarded “Kundefavoritt” for two years in a row at bytt.no, reflecting user satisfaction with its mortgage design and app experiences.