TCF Financial Corporation

Profile for TCF Financial Corporation, a former Detroit-headquartered regional bank holding company (Twin City Building and Loan Association, founded 1923). TCF was merged into Huntington Bancshares Incorporated on June 9, 2021, and the TCF brand was fully retired. This repository is preserved for historical record only — TCF Financial no longer operates and exposes no APIs. All banking, treasury, deposit, and lending services formerly offered under the TCF brand are now operated by Huntington National Bank under the Huntington brand. See the huntington-bancshares repository for current API surface (which is itself minimal; Huntington exposes no public developer portal).

TCF Financial Corporation is profiled on the APIs.io network. Tagged areas include Banking, Regional Bank, Defunct, Merger, and Historical.

📡 Source on GitHub

0.0/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Banking Regional Bank Defunct Merger Historical

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 0.0 / 9

Regulatory Posture 0.0 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Banking & Open Finance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/tcf-financial: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

SuccessorGitHub

SuccessorGitHub

Other 5

Properties that don't map to a standard resource type

Successor

Successor

SuccessorProfile

SuccessorProfile

MergerAnnouncement

MergerAnnouncement

SECEDGAR

SECEDGAR

Wikipedia

Wikipedia

Source (apis.yml)

name: TCF Financial Corporation
description: 'Profile for TCF Financial Corporation, a former Detroit-headquartered regional

  bank holding company (Twin City Building and Loan Association, founded 1923).

  TCF was merged into Huntington Bancshares Incorporated on June 9, 2021, and

  the TCF brand was fully retired. This repository is preserved for historical

  record only — TCF Financial no longer operates and exposes no APIs. All

  banking, treasury, deposit, and lending services formerly offered under the

  TCF brand are now operated by Huntington National Bank under the Huntington

  brand. See the huntington-bancshares repository for current API surface (which

  is itself minimal; Huntington exposes no public developer portal).'
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: ''
created: '2026-05-05'
modified: '2026-05-23'
url: https://github.com/api-evangelist/tcf-financial
specificationVersion: '0.23'
tags:
- Banking
- Regional Bank
- Defunct
- Merger
- Historical
apis: []
common:
- type: Successor
  url: https://www.huntington.com
- type: SuccessorGitHub
  url: https://github.com/Huntington-National-Bank
- type: SuccessorProfile
  url: https://github.com/api-evangelist/huntington-bancshares
- type: MergerAnnouncement
  url: https://ir.huntington.com/press-releases
- type: SECEDGAR
  url: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000273288
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/TCF_Financial_Corporation
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: info@apievangelist.com
x-status: defunct
x-merged-into: huntington-bancshares
x-merger-close-date: '2021-06-09'
x-former-hq: Detroit, Michigan
x-former-assets-usd-billions: 47.8
x-former-employees: 7123
x-former-branches: 478
x-former-states-served:
- Minnesota
- Illinois
- Michigan
- Colorado
- Wisconsin
- Ohio
- South Dakota
x-founded: '1923'
x-former-ticker: TCF
x-fortune:
- Fortune 1000

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