A minimal Python script that calls GET /v2/quote?mode=DELTA and prints the recommended route’s expected output and the spender from the returned delta block. Uses requests.
File tree
my-app/
├─ requirements.txt
└─ quote.py
Install
mkdir my-app && cd my-app
python -m venv .venv
source .venv/bin/activate # Windows: .venv\Scripts\activate
pip install requests
quote.py
import requests
params = {
"srcToken": "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE", # ETH
"destToken": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", # USDC
"amount": "1000000000000000000", # 1 ETH
"srcDecimals": 18,
"destDecimals": 6,
"side": "SELL",
"chainId": 1,
"mode": "DELTA",
"userAddress": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"partner": "my-app-name",
}
res = requests.get("https://api.velora.xyz/v2/quote", params=params, timeout=10)
res.raise_for_status()
delta = res.json()["delta"]
print("expected output:", delta["route"]["origin"]["output"]["amount"])
print("spender: ", delta["spender"])
Run it
You should see the recommended route’s expected output (USDC, 6 decimals) and the spender address to approve before building the order.
Next: build, sign, submit
Pass the unmodified delta.route into POST /v2/delta/orders/build (with owner set to the user address) to get EIP-712 typed data back as { toSign, orderHash }. Sign toSign with an ERC-2098 compact signature, then POST /v2/delta/orders with order (the toSign.value), the signature, chainId, and your partner. Poll GET /v2/delta/orders/{orderId} for status. See Delta → How it works.
Pass delta.route verbatim to /v2/delta/orders/build. Reordering or re-encoding it will cause the build call to reject.
Related pages
