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Washington State Mobile API
Integrate Iowa community-bank PFM data via consumer-permissioned access
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INTRODUCTION
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Washington State Mobile (package ID: com.washsb.grip) is the official mobile
banking app of Washington State Bank, a state-chartered Iowa community
institution. What makes it an unusual integration target is the dual-tier
data payload it carries: behind a single customer login sits both first-party
Washington State Bank account data and a personal finance management (PFM)
aggregation layer that consolidates any external accounts the customer has
linked in from other institutions.
For developers and fintech teams building consumer financial tools, that
combination means a single authorized session can surface a multi-bank
snapshot — balances, transactions, merchant-spend summaries, geo-tagged
events, and custom receipt annotations — without requiring the integrator
to separately negotiate access to each external institution. OpenBanking
Studio has mapped this app's data surfaces and routes, so integration teams
can move directly from authorization to a normalized data feed.
Full integration details and delivery options are available at:
https://openbankingstudio.com/washington-state-mobile.html
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SUPPORTED API FEATURES
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Washington State Mobile exposes a rich set of data surfaces through its
consumer-permissioned session layer. The following capabilities are
accessible to authorized integrators:
Account balances and position data
Real-time checking, savings, and loan balances from Washington
State Bank's Internet Banking core, plus aggregated balances
from any external institution the customer has linked.
Full transaction history with enrichment
Posted line items carrying date, amount, merchant name,
spending category, user-applied tags, freeform notes, and
linked receipt photo blobs — from both native and PFM tiers.
Merchant-spend summaries and rolling averages
Derived analytics by merchant and period, computed inside the
app from underlying transactions, re-derivable on the
integrator side for consistency across sessions.
Cross-institution PFM aggregation view
Linked external accounts (institution, type, masked account
number, balance) consolidated through the app's own GRIP-style
aggregation layer, available as a normalized multi-bank snapshot.
Geo-tagged transactions and alert configurations
Lat/long coordinates attached to user-tagged transaction events,
plus the alert rules the customer has configured (low-funds
thresholds, upcoming-bill triggers, delivery channels).
ATM and branch directory data
Location, hours, and contact information for Washington State
Bank branches and affiliated ATMs, bundled or fetched at runtime.
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USE CASES & APPLICATIONS
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[1] Personal Finance Management (PFM) and Budgeting Platforms
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Pull the consolidated multi-bank account view into a third-party
budgeting tool without re-aggregating each linked institution
Ingest merchant-spend summaries to power spending category dashboards
Surface low-funds and bill alerts inside consumer finance apps
Use geo-tagged transaction data for location-aware budget insights
Normalize external-account balances for net-worth roll-up displays
[2] Lending, Underwriting, and Cash-Flow Analysis
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Read near-real-time account balances for cash-position underwriting
Analyze transaction history for income verification and expense
pattern recognition before extending credit
Use rolling merchant-spend averages to assess discretionary spend
Cross-reference native-tier and PFM-aggregated tiers to build a
complete financial picture for lending decisions
Integrate with treasury and payroll routing workflows via live
balance feeds
[3] Reconciliation, Bookkeeping, and Accounting Exports
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Export tagged and annotated transactions with receipt photos for
expense substantiation and audit trails
Automate reconciliation against internal ledgers using posted
transaction line items with merchant and category fields
Script native export flows (CSV, OFX) for lightweight one-off
reconciliation without a full session integration
Feed categorized spending data into small-business accounting
platforms for Iowa community-bank customers
[4] Multi-Institution and Community-Bank Aggregation
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Plan multi-bank integrations knowing that Washington State Mobile
shares a GRIP-style mobile shell with CSB Iowa, Community Bank of
Oelwein, CBIOWA, Our Community Bank, The Community Bank Digital,
and MainstreetCBF — code written for one transfers cleanly
Use FDX-aligned aggregator coverage where Washington State Bank
appears in an existing network, wired to the same normalized schema
Treat Washington State Mobile as the canonical first-party tier
while pulling other institutions through direct aggregator paths
Build multi-institution cash forecasting tools that combine native
and PFM-aggregated account feeds in a single normalized payload
[5] Compliance, Consent Management, and Regulatory Readiness
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Operate integrations on signed, revocable consumer consent records
compliant with US financial-privacy practice
Log every data call against consent records and minimize retention
of raw transaction data for audit and compliance purposes
Tag the two provenance tiers (native Washington State Bank vs.
PFM-aggregated external) explicitly so downstream code never
conflates first-party bank records with third-party feed data
Prepare FDX-style endpoint swap-ins for when CFPB §1033
reconsideration resolves without redesigning the integration
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BENEFITS & ADVANTAGES
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Dual-tier data in a single authorized session
Access both first-party Washington State Bank account data and the
PFM-aggregated external feed through one customer login, reducing
the number of separate aggregator connections required.
Consumer-permissioned route works at any institution size
The dependable access path is the customer's own Internet Banking
session, which functions regardless of whether a given aggregator
has built a direct connector to this specific community bank.
Explicit provenance tagging eliminates compliance ambiguity
Native-bank and PFM-aggregated tiers are tagged separately in the
extracted payload, so consent scope, data freshness, and regulatory
treatment are unambiguous for downstream engineers and compliance
teams.
FDX-aligned aggregator handoff slots in without code branching
Where Washington State Bank shows up in an FDX-aligned network the
integrator already uses, the feed wires into the same normalized
schema as the consumer-permissioned route — no downstream branching.
Merchant-spend analytics re-derived for long-term consistency
Rolling averages are re-derived from raw transactions on the
integrator side, so the consumer sees stable numbers even when the
bank's in-app rounding logic changes across vendor releases.
Shared mobile shell means cross-bank code reuse
The GRIP-style shell that powers Washington State Mobile also runs
CSB Iowa, Community Bank of Oelwein, CBIOWA, MainstreetCBF,
Our Community Bank, and The Community Bank Digital — extraction
code travels across the entire cluster.
§1033-forward architecture requires no redesign when the rule lands
Because the integration is built on consumer authorization rather
than regulatory mandate, swapping in an FDX-style endpoint when
§1033 reconsideration resolves is a surface change, not a rebuild.
OpenBanking Studio offers two delivery tracks for a Washington State Mobile
integration, with pricing structured to match the integrator's build model:
Source-Code Delivery
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Starting at $300. Includes the runnable extractor in Python and
Node.js, a full OpenAPI/Swagger spec with real payload shapes, a
protocol and auth-flow report, an automated test suite, interface
documentation, and a compliance and retention note. Payment is due
only after the integrator has verified the build against a real
Washington State Bank account — no upfront fee before delivery.
Hosted Pay-Per-Call
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Skip the build entirely and call against OpenBanking Studio's
hosted endpoint. No upfront fee; billed per call against the
normalized API. Access setup, NDA, and the consumer consent record
are arranged during onboarding within a standard 1-2 week cycle.
Both tracks include a quarterly re-check under the maintenance plan to
catch and patch vendor-side changes to the shared GRIP mobile shell before
they surface as errors in the integrator's production pipeline.
Washington State Mobile occupies a distinct position among community-bank
integration targets: its GRIP-style PFM aggregation layer means one
authorized session can return a multi-institution financial picture, not
just the records of a single Iowa bank. For integrators building PFM tools,
lending platforms, bookkeeping exports, or multi-bank aggregation products,
that dual-tier payload is significant — provided the two provenance tiers
are tracked and treated separately throughout the pipeline.
OpenBanking Studio has mapped the full data surface, the consumer-
permissioned session model, the FDX-aligned handoff path, and the
compliance considerations that accompany an integration of this type.
The build is designed to remain stable under vendor-side shell updates
and to slot into a §1033-ready architecture without rework when the
regulatory picture settles.
To start a Washington State Mobile integration — or to explore coverage
across the broader cluster of Iowa community banks running the same
shared shell — send the app name and the data surfaces you need via the
contact form. Access setup, consent records, and NDA are arranged during
onboarding, typically inside a 1-2 week cycle.
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Visit and learn more:
https://openbankingstudio.com/washington-state-mobile.html
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