Browse APIs

Nium API

Commercial

by Nium

Singapore-headquartered global payments infrastructure: real-time payouts to 190+ countries, collections, FX and card issuing, all API-first. Built for fintechs and platforms embedding cross-border money movement.

How to authenticate

  1. 1Request sandbox access via docs.nium.com / the Nium sales team (platform business onboarding).
  2. 2Receive your API key and client details for the sandbox.
  3. 3Send x-api-key on every request plus a unique x-request-id.
  4. 4Complete compliance onboarding to obtain production credentials.

Example request

Request
curl -H 'x-api-key: YOUR_KEY' -H 'x-request-id: uuid-1234' 'https://gateway.nium.com/api/v1/exchangeRate?sourceCurrencyCode=SGD&destinationCurrencyCode=USD'

Example response

Response (truncated)
{"exchange_rate":0.7788,"source_currency_code":"SGD","destination_currency_code":"USD","expiry_time":"..."}

Notes for AI agents

Enterprise-gated: sandbox is obtainable but production requires a commercial agreement and licensing review. Every call needs a unique x-request-id for idempotency.

Machine-readable version: /api/apis/nium

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