aid: flagstar
url: https://raw.githubusercontent.com/api-evangelist/flagstar/refs/heads/main/apis.yml
name: Flagstar
kind: company
description: >-
  Flagstar Bank, N.A. is the OCC-chartered national bank subsidiary of Flagstar
  Financial, Inc. (NYSE: FLG), the Hicksville, New York holding company formerly
  known as New York Community Bancorp (NYCB). It is one of the largest regional
  (super-regional) banks in the United States, formed when NYCB acquired Flagstar
  Bancorp in December 2022, converted Flagstar Bank, FSB into a national bank
  (Flagstar Bank, N.A.), and subsequently acquired certain assets and liabilities
  of Signature Bridge Bank from the FDIC in March 2023; the holding company
  rebranded to Flagstar Financial in October 2024. Flagstar operates in retail
  and commercial banking, mortgage origination and servicing, and warehouse
  lending. On the API front, Flagstar runs a first-party developer portal at
  developer.flagstar.com (a Broadcom/Layer7 "LivePortal" API Developer Portal),
  but as of this review it publishes no public, self-serve API products, API
  documentation, or downloadable OpenAPI/Swagger to anonymous visitors — all
  products are sign-in gated behind partner/consumer-team access. Flagstar has
  no publicly documented FDX (Financial Data Exchange) participation or CFPB
  Section 1033 data-access posture; consumer-permissioned data sharing appears
  to be available only through third-party aggregators (e.g. Plaid, Tink,
  TrueLayer) rather than a first-party public API.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Financial Services
- Banking
- United States
- National Bank
- Super-Regional Bank
- Mortgage
- Open Finance
- Data Aggregation
created: '2026-07-23'
modified: '2026-07-23'
specificationVersion: '0.19'
apis: []
common:
- type: DomainSecurity
  url: security/flagstar-domain-security.yml
- type: Website
  url: https://www.flagstar.com
- type: DeveloperPortal
  url: https://developer.flagstar.com
- type: LinkedIn
  url: https://www.linkedin.com/company/flagstar-bank
- type: PrivacyPolicy
  url: https://www.flagstar.com/legal-disclaimers/privacy.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com