Documentation - Notus API

This endpoint provides a real-time quote for a token transfer, including the estimated amount of the token, fees, and other relevant details.

Authorization

x-api-key<token>

In: header

Request Body

amountstring

The amount to be transferred, expressed as a decimal string.

chainIdnumber

The blockchain network where the transfer executes. Supported EVM chains:

Arbitrum One: 42161
Avalanche: 43114
Base: 8453
BNB Smart Chain: 56
Ethereum: 1
Gnosis: 100
OP Mainnet: 10
Polygon: 137

gasFeePaymentMethodstring

Defines how the fee will be paid: ADD_TO_AMOUNT adds it to the input amount, while DEDUCT_FROM_AMOUNT subtracts it from the input amount.

Value in"ADD_TO_AMOUNT" | "DEDUCT_FROM_AMOUNT"

payGasFeeTokenstring

The token address (in hexadecimal format) used to pay the transaction fee.

Match^0x[a-fA-F0-9]{40}$

tokenstring

The address (in hexadecimal format) of the token being transferred.

Match^0x[a-fA-F0-9]{40}$

walletAddressstring

The wallet address (in hexadecimal format) initiating the swap.

Match^0x[a-fA-F0-9]{40}$

toAddressstring

The wallet address (in hexadecimal format) receiving the transfer.

Match^0x[a-fA-F0-9]{40}$

transactionFeePercent?number

Percentage fee to be charged (0 to 99%). The fee is deducted from the input token and sent to the treasuryAddress if configured.

Rangevalue <= 99.99

metadata?object

Custom metadata for the entity. Key-value pairs with string values. Max 1KB size.

Empty Object

Response Body

curl -X POST "https://api.notus.team/api/v1/crypto/transfer" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": "101.25",
    "chainId": 42161,
    "gasFeePaymentMethod": "ADD_TO_AMOUNT",
    "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
    "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
    "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
    "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
  }'

const body = JSON.stringify({
  "amount": "101.25",
  "chainId": 42161,
  "gasFeePaymentMethod": "ADD_TO_AMOUNT",
  "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
  "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
  "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
  "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
})

fetch("https://api.notus.team/api/v1/crypto/transfer", {
  body
})

package main

import (
  "fmt"
  "net/http"
  "io/ioutil"
  "strings"
)

func main() {
  url := "https://api.notus.team/api/v1/crypto/transfer"
  body := strings.NewReader(`{
    "amount": "101.25",
    "chainId": 42161,
    "gasFeePaymentMethod": "ADD_TO_AMOUNT",
    "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
    "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
    "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
    "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
  }`)
  req, _ := http.NewRequest("POST", url, body)
  req.Header.Add("Content-Type", "application/json")
  res, _ := http.DefaultClient.Do(req)
  defer res.Body.Close()
  body, _ := ioutil.ReadAll(res.Body)

  fmt.Println(res)
  fmt.Println(string(body))
}

import requests

url = "https://api.notus.team/api/v1/crypto/transfer"
body = {
  "amount": "101.25",
  "chainId": 42161,
  "gasFeePaymentMethod": "ADD_TO_AMOUNT",
  "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
  "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
  "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
  "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
}
response = requests.request("POST", url, json = body, headers = {
  "Content-Type": "application/json"
})

print(response.text)

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.time.Duration;
import java.net.http.HttpRequest.BodyPublishers;

var body = BodyPublishers.ofString("""{
  "amount": "101.25",
  "chainId": 42161,
  "gasFeePaymentMethod": "ADD_TO_AMOUNT",
  "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
  "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
  "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
  "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
}""");
HttpClient client = HttpClient.newBuilder()
  .connectTimeout(Duration.ofSeconds(10))
  .build();

HttpRequest.Builder requestBuilder = HttpRequest.newBuilder()
  .uri(URI.create("https://api.notus.team/api/v1/crypto/transfer"))
  .header("Content-Type", "application/json")
  .POST(body)
  .build();

try {
  HttpResponse<String> response = client.send(requestBuilder.build(), BodyHandlers.ofString());
  System.out.println("Status code: " + response.statusCode());
  System.out.println("Response body: " + response.body());
} catch (Exception e) {
  e.printStackTrace();
}

using System;
using System.Net.Http;
using System.Text;

var body = new StringContent("""
{
  "amount": "101.25",
  "chainId": 42161,
  "gasFeePaymentMethod": "ADD_TO_AMOUNT",
  "payGasFeeToken": "0x82af49447d8a07e3bd95bd0d56f35241523fbab1",
  "token": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
  "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
  "toAddress": "0xa7a9dcfcb65ed67e05d9c7eb49d2d74ce1f5f4f1"
}
""", Encoding.UTF8, "application/json");

var client = new HttpClient();
var response = await client.PostAsync("https://api.notus.team/api/v1/crypto/transfer", body);
var responseBody = await response.Content.ReadAsStringAsync();

{
  "transfer": {
    "metadata": {
      "key": "value"
    },
    "userOperationHash": "0x2aac7a66d5331454eafc9b981be3596ad08a40dad24883e3b9c4a5362cd7f7e1",
    "quoteId": "0x2aac7a66d5331454eafc9b981be3596ad08a40dad24883e3b9c4a5362cd7f7e1",
    "revertReason": {
      "decoded": "ERC-20 insufficient balance. Address 0xf12534a4939c7fbda50f893774a9525265fe1a9a has 120. The operation requested 200.",
      "raw": "0xe450d38c000000000000000000000000f12534a4939c7fbda50f893774a9525265fe1a9a0000000000000000000000000000000000000000000000068155a43676e0000000000000000000000000000000000000000000000000000ad78ebc5ac6200000",
      "utf8": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000�%4�����\u000f�7t�RRe�\u001a�\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0006�U�6v�\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\n׎�Z� \u0000\u0000"
    },
    "authorization": {
      "chainId": 42161,
      "address": "0xd6cedde84be40893d153be9d467cd6ad37875b28",
      "nonce": 10,
      "hash": "0x777811ae5d51875409b9978ddc1b40a9da1bbe9570040bdd7c5f186d70ceceba"
    },
    "walletAddress": "0x6e397ddf51d9f15dbe0414538e7529f51f2e5464",
    "token": "0x2791bca1f2de4661ed88a30c99a7a9449aa84174",
    "amountToSend": "1.26",
    "amountToSendUSD": "23.48",
    "amountToBeReceived": "1.255",
    "amountToBeReceivedUSD": "23.386825396825396825",
    "chain": 43114,
    "estimatedExecutionTime": "2026-04-12T14:49:12.762Z",
    "estimatedGasFees": {
      "payGasFeeToken": "0xc2132d05d31c914a87c6611c10748aeb04b58e8f",
      "maxGasFeeToken": "12.345",
      "gasFeeTokenAmount": "12.345",
      "gasFeeTokenAmountUSD": "0.321",
      "maxGasFeeNative": "string"
    },
    "estimatedCollectedFee": {
      "collectedFeeToken": "string",
      "collectedFee": "string",
      "collectedFeePercent": "string",
      "notusCollectedFee": "string",
      "notusCollectedFeePercent": "string"
    },
    "toAddress": "0x89c9da1cc13daebe9caca2418c1028253636b163",
    "expiresAt": 1751469204210
  }
}

{
  "statusCode": 400,
  "id": "NOT_AUTHORIZED_TOKENS",
  "message": "The tokens '[0xaf88d065e77c8cc2239327c5edb3a432268e5831]' are not authorized yet."
}

{
  "statusCode": 403,
  "id": "UNAVAILABLE_COMPUTE_UNITS",
  "message": "The project doesn't have enough compute units to perform this action. Please upgrade your plan."
}

{
  "statusCode": 404,
  "id": "ACCOUNT_ABSTRACTION_ADDRESS_NOT_REGISTERED_WITH_PROJECT",
  "message": "The requested wallet \"0x6e397ddf51d9f15dbe0414538e7529f51f2e5464\" is not registered with the project"
}

Create Transfer

Authorization

Request Body

Response Body

200

400

403

404