Nium

Nium is a global payments infrastructure platform for cross-border payouts, collections, FX, and card issuing. Serves financial institutions, fintechs, and corporates with a single API.

Nium publishes 6 APIs on the APIs.io network. Tagged areas include Fintech, Cross-Border, Payments, FX, and Issuing.

Nium’s developer surface includes engineering blog and 1 more developer resources.

📡 Source on GitHub

8.7/100 minimal ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

6 APIs

Fintech Cross-Border Payments FX Issuing

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 8.7/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 2.2 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 5.5 / 9

Regulatory Posture 1.4 / 15

Agent readiness — 3/100 · 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 7 / 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 Payments 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/nium: 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 →

APIs 6

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

Nium Payout API

Cross-border payouts to bank accounts, cards and wallets in 220+ countries with real-time delivery in 100+.

Nium Payin API

Accept payments via bank transfers, cards and wallets across 35+ countries.

Nium Wallet API

Multi-currency virtual wallets for storing and managing funds.

Nium Cards API

Issue and manage virtual and physical cards.

Nium FX API

Real-time foreign exchange quotes and conversions.

Nium Onboarding API

KYC/KYB onboarding flows for individuals and corporates.

Pricing Plans 1

Published pricing tiers and plan structures.

Nium Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nium Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Nium Finops

FINOPS

Security Posture 1

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

Nium Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

aid: nium
url: https://raw.githubusercontent.com/api-evangelist/nium/refs/heads/main/apis.yml
name: Nium
kind: company
description: Nium is a global payments infrastructure platform for cross-border payouts, collections, FX, and card issuing.
  Serves financial institutions, fintechs, and corporates with a single API.
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:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nium.png
tags:
- Fintech
- Cross-Border
- Payments
- FX
- Issuing
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- name: Nium Payout API
  description: Cross-border payouts to bank accounts, cards and wallets in 220+ countries with real-time delivery in 100+.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - Payouts
  - Cross-Border
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
- name: Nium Payin API
  description: Accept payments via bank transfers, cards and wallets across 35+ countries.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - Payins
  - Collection
  tags_raw:
  - Payins
  - Collections
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
- name: Nium Wallet API
  description: Multi-currency virtual wallets for storing and managing funds.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - Wallets
  - Multi-Currency
  tags_raw:
  - Wallet
  - Multi-Currency
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
- name: Nium Cards API
  description: Issue and manage virtual and physical cards.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - Cards
  - Issuing
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
- name: Nium FX API
  description: Real-time foreign exchange quotes and conversions.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - FX
  - Currency Conversion
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
- name: Nium Onboarding API
  description: KYC/KYB onboarding flows for individuals and corporates.
  humanURL: https://docs.nium.com/apis
  baseURL: https://gateway.nium.com/api
  tags:
  - KYC
  - KYB
  - Onboarding
  properties:
  - type: Documentation
    url: https://docs.nium.com/apis
common:
- type: DomainSecurity
  url: security/nium-domain-security.yml
- url: https://www.nium.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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