Number26

Number26 — trading as N26 (legally N26 GmbH) — is a German licensed digital bank offering 100% mobile banking to more than 8 million customers across 24 European markets. Founded in Berlin in 2013 and holding a full banking licence from Germany's Federal Financial Supervisory Authority (BaFin), N26 provides current accounts with virtual and physical Mastercard debit cards, instant savings with variable interest, in-app stock/ETF and cryptocurrency investing, real-time spending insights, sub-accounts (Spaces), and travel features such as foreign-exchange and insurance, across a free tier and paid Smart, Go, and Metal plans plus matching business accounts. N26 is a consumer neobank and does not publish a public developer API, developer portal, or API documentation; this API Evangelist profile tracks the company's public web presence.

Number26 publishes 1 API on the APIs.io network: default API. Tagged areas include Company, Fintech, Banking, Neobank, and Mobile Banking.

Number26’s developer surface includes engineering blog, support, documentation, API reference, authentication, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub
39.4/100 thin ▬ flat Agent 46/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyFintechBankingNeobankMobile BankingPaymentsEuropeGermany

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 39.4/100 · thin
Contract Quality 12.4 / 25
Developer Ergonomics 9.1 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 1.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 46/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 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/number26: 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.

Number26 default API

The default API from Number26 — 9 operation(s) for default.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

number26-mcp.yml

MCP SERVER

Security Posture 2

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

Number26 Xs2A Authentication

http/mutualTLS · 2 schemes

SECURITY

Number26 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Postman
Postman

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 Deprecation
Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: number26
name: Number26
description: Number26 — trading as N26 (legally N26 GmbH) — is a German licensed digital bank offering 100% mobile banking
  to more than 8 million customers across 24 European markets. Founded in Berlin in 2013 and holding a full banking licence
  from Germany's Federal Financial Supervisory Authority (BaFin), N26 provides current accounts with virtual and physical
  Mastercard debit cards, instant savings with variable interest, in-app stock/ETF and cryptocurrency investing, real-time
  spending insights, sub-accounts (Spaces), and travel features such as foreign-exchange and insurance, across a free tier
  and paid Smart, Go, and Metal plans plus matching business accounts. N26 is a consumer neobank and does not publish a public
  developer API, developer portal, or API documentation; this API Evangelist profile tracks the company's public web presence.
url: https://raw.githubusercontent.com/api-evangelist/number26/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
x-tier: stub
x-tier-reason: portfolio-lead
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/number26.png
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Fintech
- Banking
- Neobank
- Mobile Banking
- Payments
- Europe
- Germany
apis:
- aid: number26:number26-default-api
  name: Number26 default API
  description: The default API from Number26 — 9 operation(s) for default.
  humanURL: https://github.com/n26/psd2-tpp-docs
  baseURL: https://xs2a.tech26.de/v1/berlin-group/v1
  tags:
  - default
  properties:
  - type: OpenAPI
    url: openapi/number26-default-api-openapi.yml
  - type: Documentation
    url: https://github.com/n26/psd2-tpp-docs
  - type: APIReference
    url: https://github.com/n26/psd2-tpp-docs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/number26-domain-security.yml
- type: Website
  url: https://n26.com/en-eu
- type: Blog
  url: https://n26.com/en-eu/blog
- type: Support
  url: https://support.n26.com/en-eu
- type: PrivacyPolicy
  url: https://docs.n26.com/legal/06+EU/03+Privacy%20Policy/en/01privacy-policy-en.pdf
- type: TermsOfService
  url: https://n26.com/en-eu/legal-documents
- type: GitHubOrganization
  url: https://github.com/n26
- type: Documentation
  url: https://github.com/n26/psd2-tpp-docs
- type: APIReference
  url: https://github.com/n26/psd2-tpp-docs
- type: Postman
  url: https://github.com/n26/psd2-tpp-docs/tree/master/doc/assets/postman
- type: Authentication
  url: authentication/number26-xs2a-authentication.yml
- type: Conventions
  url: conventions/number26-conventions.yml
- type: ErrorCatalog
  url: errors/number26-problem-types.yml
- type: DataModel
  url: data-model/number26-data-model.yml
- type: Conformance
  url: conformance/number26-conformance.yml
- type: Lifecycle
  url: lifecycle/number26-lifecycle.yml
- type: Deprecation
  url: lifecycle/number26-lifecycle.yml
- type: MCPServer
  url: mcp/number26-mcp.yml
- type: Overlay
  url: overlays/number26-xs2a-overlay.yaml
- type: LLMsTxt
  url: llms/number26-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 11
  pass: local-v1