NOWPayments API

nowpayments.io

REST API for accepting, sending, and automating cryptocurrency payments with fixed- or floating-rate conversion.

The NOWPayments API API uses api key authentication; has usage based pricing. Verified 2026-07-08 with per-field source links.

Finance Verified 2026-07-08 medium confidence

Base URL

not documented null

no source

Auth

api_key

Free tier

not documented null

no source

Pricing model

usage_based

Pricing

0.5% service fee for monocurrency payments, 1% for payments with conversion (excludes network fees)

Rate limits

not documented null

no source

OpenAPI spec

not documented null

no source

MCP server

MCP servers available for AI/LLM-based integrations