Getting Started
Tender API is a RESTful service that accepts and returns JSON. All requests must be made over HTTPS and authenticated using HMAC signatures. To get started, create a Tender account and obtain your API credentials from the dashboard. Base URLv1/api/....
HTTP Status Codes
| Code | Description | Definition |
|---|---|---|
| 200 | OK | Everything worked as expected |
| 400 | Bad Request | Request could not be processed, often due to missing or invalid parameters |
| 401 | Unauthorized | Could not complete authorization due to missing key, invalid key or invalid HMAC signature |
| 404 | Not Found | Resource does not exist |
| 409 | Conflict | Request conflicts with another request |
| 422 | Unprocessable Entity | Payload validation error |
| 429 | Too Many Requests | You are sending too many requests |
| 5xx | Server Error | An unexpected error happened while processing the request |
Supported Blockchains
Tender supports multiple blockchain networks for cryptocurrency payments:| Blockchain | Chain ID | Native Token | Status |
|---|---|---|---|
| Ethereum | ethereum | ETH | Active |
| Avalanche C-Chain | avalanche | AVAX | Active |
| BNB Smart Chain | bsc | BSC | Active |
| Polygon | polygon | MATIC | Active |
| Bitcoin | bitcoin | BTC | Active |
| TRON | tron | TRON | Active |
| Solana | sol | SOL | Active |
| Aptos | aptos | APTOS | Active |
| Movement | move-1, move-2 | MOVE | Active |
Supported Cryptocurrencies
Each blockchain supports various cryptocurrencies including native tokens and stablecoins (USDC, USDT). Use the Fetch Chains and Fetch Currencies endpoints to get the complete list of supported currencies and their configurations.API Endpoint Groups
The API is organized into the following groups:- Agents & Businesses: Create and manage agents (sub-businesses) associated with your merchant account
- Payment: Initiate and validate cryptocurrency payment transactions
- System: Retrieve system configuration including supported chains, currencies, and exchange rates
- Webhooks: Configure webhook endpoints and monitor delivery logs for real-time event notifications