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GREYLOCK FEDERAL CREDIT UNION API INTEGRATION
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Connect to member account data behind the Alkami-powered Greylock FCU app
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INTRODUCTION
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Greylock Federal Credit Union, headquartered in Pittsfield,
Massachusetts, migrated its digital banking to the Alkami
Digital Banking Platform in 2024. Every balance, transaction,
transfer, and Bill Pay record a member sees in the mobile app
is served from a single authenticated session against that
Alkami backend.
For developers, fintech teams, and treasury platforms, this
means there is one consistent, well-defined route to Greylock
account data. An authorized integration built around this
session can normalize balances, transaction history, transfers,
Bill Pay, Zelle activity, and deposit status into a single set
of API endpoints — usable the same way for any member, retail
or business.
This page explains the supported API features, the scenarios
where this integration is used, and why a Greylock Federal
Credit Union API integration is a practical, low-friction way
to bring credit union data into your product.
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SUPPORTED API FEATURES
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Account balances and positions — near real-time per-account
data for cash visibility and balance alerts
Transaction history — dated, itemized transactions with
descriptions and amounts for reconciliation and accounting
Transfers — internal, member-to-member, and linked external
account transfers, including status and recurring schedules
Bill Pay data — payee lists and payment history with status,
enabling accounts-payable style reconciliation
Zelle activity — sent and received items for P2P payment
matching against internal ledgers
Mobile deposit status — deposit items and clearance tracking
for deposit ingestion workflows
Retail and business account separation — distinct entitlement
sets and account trees modeled per member profile
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USE CASES & APPLICATIONS
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[1] Treasury Management for Business Members
Nightly sync of balances and posted transactions across a
business account tree
Push data into ERP or cash-forecasting tools
Flag scheduled transfers due in upcoming cycles
[2] Personal Finance Management (PFM) Apps
Consented account linking for Greylock FCU members
Continuous balance refresh inside a member's chosen
money management app
Normalized transaction history for budgeting tools
[3] Payment Reconciliation
Match Bill Pay and Zelle outflows against open invoices
Surface exceptions automatically for small business owners
Reduce manual review of the Transfers screen
[4] Account Aggregation Platforms
Combine Greylock FCU data with other regional credit
union and bank feeds (DCU, Metro Credit Union, Workers
Credit Union, Berkshire Bank, and similar institutions)
Present a unified multi-account view to end users
Maintain consistent data shapes across institutions
[5] Lending and Credit Risk Tools
Incorporate embedded credit-score and report data
Enrich underwriting models with transaction-level signals
Support PFM-style credit monitoring features
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BENEFITS & ADVANTAGES
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Single authenticated session covers all member data domains
Built on the well-documented, widely used Alkami platform
Normalized OpenAPI specification for accounts, transactions,
transfers, Bill Pay, and deposit status
Works the same way across both retail and business member
profiles
Runnable source code delivered in Python and Node.js
Built-in handling for re-authentication, MFA challenges,
and rate-limit backoff
Fast turnaround — typically delivered within 1-2 weeks
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SUBSCRIPTION PLANS
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Two access models are available:
Source-code delivery — starting at $300, you receive the
runnable source code, documentation, and test suite, with
payment only after delivery once you're satisfied
Pay-per-call hosted API — no upfront fee, call the hosted
endpoints directly and pay only for the calls you make
Both options are scoped around your specific use case, with
access and any sandbox or consenting-account setup arranged
during onboarding.
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CONCLUSION
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Greylock Federal Credit Union's move to the Alkami platform
created a single, consistent data surface covering balances,
transactions, transfers, Bill Pay, Zelle, and deposits for
both retail and business members. An authorized API integration
built around this session gives developers a reliable way to
bring this data into treasury tools, PFM apps, reconciliation
systems, and lending platforms — without reinventing the
authentication and data-mapping work for each new build.
If you're building a product that needs Greylock FCU account
data, or data from comparable New England credit unions and
banks, this integration approach offers a fast, well-scoped
path to production.
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Learn more and get started:
https://openbankingstudio.com/greylock-federal-credit-union.html
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