Fidor Bank website screenshot

Fidor Bank

Fidor Bank was a German digital challenger bank founded in Munich in 2009 and an early pioneer of Banking-as-a-Service and open banking through its fidorOS / bankOS middleware platform and public REST API, which covered Customers, Accounts, Transfers, Transactions and Account Information over an OAuth2 authorization-code flow. Fidor was acquired by France's Groupe BPCE in 2016; following years of post-acquisition integration struggles the bank ceased business operations in mid-2023 and entered liquidation. Its developer portal (fidor.com) is now a parked domain and the sandbox and production API hosts are offline. The surviving first-party developer artifacts are the archived official Ruby client (RubyGems: fidor_api, by Fidor Solutions AG) and the github.com/fidor organization. This is a retired provider retained for historical reference.

Fidor Bank publishes 1 API on the APIs.io network. Tagged areas include Company, Fintech, Banking, Banking as a Service, and Open Banking.

Fidor Bank’s developer surface includes authentication and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub
13.4/100 minimal ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs
CompanyFintechBankingBanking as a ServiceOpen BankingDigital BankNeobankGermanyRetired

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 13.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 3.5 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/fidor-bank: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Fidor Germany Banking API

Fidor's REST API for Customers, Accounts, Transfers, Transactions and Account Information, secured with OAuth2 (authorization-code flow). Now retired: the sandbox (*.sandbox.fid...

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fidor Bank Authentication

oauth2 · 1 scheme

SECURITY

Resources

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 1

Authentication, authorization, and security posture

Authentication
Authentication

Source (apis.yml)

apis.yml Raw ↑ 
aid: fidor-bank
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fidor-bank.png
name: Fidor Bank
description: 'Fidor Bank was a German digital challenger bank founded in Munich in 2009 and an early pioneer of Banking-as-a-Service
  and open banking through its fidorOS / bankOS middleware platform and public REST API, which covered Customers, Accounts,
  Transfers, Transactions and Account Information over an OAuth2 authorization-code flow. Fidor was acquired by France''s
  Groupe BPCE in 2016; following years of post-acquisition integration struggles the bank ceased business operations in mid-2023
  and entered liquidation. Its developer portal (fidor.com) is now a parked domain and the sandbox and production API hosts
  are offline. The surviving first-party developer artifacts are the archived official Ruby client (RubyGems: fidor_api, by
  Fidor Solutions AG) and the github.com/fidor organization. This is a retired provider retained for historical reference.'
url: https://raw.githubusercontent.com/api-evangelist/fidor-bank/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: stub
x-tier-reason: portfolio-lead
x-status: retired
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Fintech
- Banking
- Banking as a Service
- Open Banking
- Digital Bank
- Neobank
- Germany
- Retired
apis:
- name: Fidor Germany Banking API
  description: 'Fidor''s REST API for Customers, Accounts, Transfers, Transactions and Account Information, secured with OAuth2
    (authorization-code flow). Now retired: the sandbox (*.sandbox.fidor.com) and production (*.fidor.de) hosts and the Stoplight-hosted
    documentation are offline. The archived official Ruby client is the best surviving reference.'
  humanURL: https://github.com/fidor/fidor_api
  baseURL: https://api.fidor.de
  x-status: retired
  tags:
  - Banking
  - Payments
  - Open Banking
  properties:
  - type: SourceCode
    url: https://github.com/fidor/fidor_api
  - type: Authentication
    url: authentication/fidor-bank-authentication.yml
common:
- type: GitHubOrganization
  url: https://github.com/fidor
- type: Packages
  url: packages/fidor-bank-packages.yml
- type: SDKs
  url: packages/fidor-bank-packages.yml
- type: Authentication
  url: authentication/fidor-bank-authentication.yml
- type: Lifecycle
  url: lifecycle/fidor-bank-lifecycle.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence