Tuum

Tuum is a cloud-native, modular core banking platform that lets banks, fintechs, and other financial institutions launch and modernise financial products without legacy constraints. Its API-first platform is organised into independent modules — accounts, payments, cards, lending, deposits, and more — covering Banking-as-a-Service, payments processing, lending, and Islamic banking. Developers integrate over per-module REST APIs (auth-api, person-api, account-api, payment-api, card-api, loan-api, deposit-api, notification-api), authenticating with a JWT presented in the x-auth-token header (with a standards OAuth 2.0 authorization server also available), and receive near-real-time events via the Notification API's webhooks. Founded in Estonia (formerly Modularbank), Tuum is backed by investors including Speedinvest.

Tuum publishes 1 API on the APIs.io network. Tagged areas include Company, Core Banking, Banking as a Service, Payments, and Lending.

The Tuum catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Tuum’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, authentication, sandbox, and 12 more developer resources.

33.0/100 thin ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs
CompanyCore BankingBanking as a ServicePaymentsLendingCardsFintechFinancial ServicesAPI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 33.0/100 · thin
Contract Quality 5.7 / 25
Developer Ergonomics 11.7 / 20
Commercial Clarity 2.1 / 20
Operational Transparency 2.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 28/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 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/tuum: 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.

Tuum Core Banking API

Tuum's modular, API-first core banking platform. Per-module REST APIs (auth, person, employee, account, payment, card, loan, deposit, data-import, notification) versioned indepe...

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Security Posture 2

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

Tuum Authentication

http/oauth2/mutualTLS · 2 schemes

SECURITY

Tuum Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: tuum
name: Tuum
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 10
  pass: local-v1
description: Tuum is a cloud-native, modular core banking platform that lets banks, fintechs, and other financial institutions
  launch and modernise financial products without legacy constraints. Its API-first platform is organised into independent
  modules — accounts, payments, cards, lending, deposits, and more — covering Banking-as-a-Service, payments processing, lending,
  and Islamic banking. Developers integrate over per-module REST APIs (auth-api, person-api, account-api, payment-api, card-api,
  loan-api, deposit-api, notification-api), authenticating with a JWT presented in the x-auth-token header (with a standards
  OAuth 2.0 authorization server also available), and receive near-real-time events via the Notification API's webhooks. Founded
  in Estonia (formerly Modularbank), Tuum is backed by investors including Speedinvest.
url: https://raw.githubusercontent.com/api-evangelist/tuum/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
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
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
image: https://tuum.com/wp-content/uploads/2023/07/img-coverTuum.png
tags:
- Company
- Core Banking
- Banking as a Service
- Payments
- Lending
- Cards
- Fintech
- Financial Services
- API
apis:
- name: Tuum Core Banking API
  description: Tuum's modular, API-first core banking platform. Per-module REST APIs (auth, person, employee, account, payment,
    card, loan, deposit, data-import, notification) versioned independently in the URL path, authenticated with a JWT in the
    x-auth-token header, with a public sandbox and webhook events.
  humanURL: https://developer.tuumplatform.com/explore
  baseURL: https://auth-api.sandbox.tuumplatform.com
  tags:
  - Core Banking
  - Payments
  - Cards
  - Lending
  properties:
  - type: Documentation
    url: https://docs.tuum.com/tuum-developer-docs
  - type: APIReference
    url: https://developer.tuumplatform.com/explore
  - type: GettingStarted
    url: https://docs.tuum.com/tuum-developer-docs/getting-started/get-started
common:
- type: DomainSecurity
  url: security/tuum-domain-security.yml
- type: Website
  url: https://tuum.com/
- type: DeveloperPortal
  url: https://developer.tuumplatform.com/
- type: Documentation
  url: https://docs.tuum.com/tuum-developer-docs
- type: APIReference
  url: https://developer.tuumplatform.com/explore
- type: GettingStarted
  url: https://docs.tuum.com/tuum-developer-docs/getting-started/get-started
- type: Blog
  url: https://tuum.com/blog/
- type: Support
  url: https://tuum.com/get-in-touch/
- type: PrivacyPolicy
  url: https://tuumplatform.com/privacy-policy/
- type: Authentication
  url: authentication/tuum-authentication.yml
- type: Conventions
  url: conventions/tuum-conventions.yml
- type: Idempotency
  url: conventions/tuum-conventions.yml
- type: Lifecycle
  url: lifecycle/tuum-lifecycle.yml
- type: Deprecation
  url: lifecycle/tuum-lifecycle.yml
- type: Sandbox
  url: sandbox/tuum-sandbox.yml
- type: Webhooks
  url: asyncapi/tuum-notification-webhooks.yml
- type: Conformance
  url: conformance/tuum-conformance.yml
- type: WellKnown
  url: well-known/tuum-well-known.yml
- type: LLMsTxt
  url: llms/tuum-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io