Authentication - Documentation

API keys grant full account access.

Copy API keys immediately; they are shown only once on creation
Store API keys securely in a secrets manager—never hardcode them in client-side code or commit them to repositories
Use separate API keys per environment (development, staging, production)
Apply least privilege: restrict each API key’s permissions to only what is necessary

PayNext uses API keys to authenticate all requests. Manage your keys in the Developers section of the PayNext Dashboard.

How to Authenticate

Include your API key in the Authorization header for every request:

curl

curl -X GET 'https://api.paynext.com/payments' \
  -H "Authorization: Bearer <your-api-key>" \
  -H "X-API-Version: 2.0.0"

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