Skip to main content

​
Welcome to Zet API

Zet provides a unified API for businesses to integrate fiat on/off ramp, token swap, and cross-chain transfer capabilities into their applications.

Quickstart

Get your API keys and make your first call in minutes.

API Reference

Explore all endpoints with request/response examples.

Guides

Step-by-step integration guides for each product.

Supported Assets

View all supported chains, tokens, and currencies.

​
What you can build

​
How it works

Zet abstracts the complexity of blockchain interactions behind a simple REST API:
1

Create a wallet

Create a Zet-managed smart wallet for each of your users — or bring your own wallet addresses.
2

Quote a transaction

Get a real-time price quote with all fees broken down transparently.
3

Execute

Initiate the transaction. For custodial wallets, Zet handles signing, gas, and execution automatically.
4

Get notified

Receive webhook events when the transaction completes (or fails).

​
Key features

  • ERC-4337 Smart Accounts — Every wallet is a smart contract account with gasless transactions sponsored by Zet.
  • Deterministic addresses — The same wallet address works across all supported EVM chains. No separate deployment needed.
  • Multi-chain — Primary support for Base and BSC, with cross-chain transfers to Ethereum, Polygon, Arbitrum, Avalanche, and Solana.
  • Optimized routing — Swaps and bridges are routed through Zet’s aggregation engine for the best rates across multiple DEXs and bridges.
  • Nigerian Naira (NGN) ramp — Direct fiat on/off ramp with Nigerian bank transfers.
  • Transparent fees — All fees are broken down in quotes before execution. No hidden charges.
  • Webhooks — Real-time event notifications with HMAC-SHA256 signature verification.

​
Base URL

​
Support

Have questions or need help? Reach out: