Documentation

Everything you need to build with, or use, SMPLY PAY.

Two paths, depending on who you are — a developer integrating the API, or someone using the product directly.

API Reference

HMAC request signing, every /api/v1/... endpoint, webhook payloads, and error codes — for developers integrating deposits, withdrawals, and escrow into their own systems.

Read the API Reference

User Guide

Plain-language walkthroughs of registration, wallets, deposits, withdrawals, conversion, and escrow — for people using the product itself, no code required.

Read the User Guide
Every request is HMAC-signed
curl https://api.smply-pay.example.com/api/v1/wallets/{wallet_id}/balance \
  -H "X-Api-Key-Id: $SMPLY_API_KEY_ID" \
  -H "X-Signature: $SIGNATURE" \
  -H "X-Timestamp: $TIMESTAMP" \
  -H "X-Nonce: $NONCE"