0x Swap API

🟪

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17Supported chains 5REST Paths 1Plan

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This add-on is currently in Beta

Feel free to test it, we would appreciate feedback to address any errors that may occur

Supported Chains

Published on Sep 29, 2025

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Swap API is a institutional-grade DEX aggregation and smart order routing REST API that allows you to find the best price and easily submit the trade with just a few lines of code.Swap API allows you to add crypto trading in your application with just a single API integration. It finds the best real-time price across 100+ liquidity sources, both public (AMMs) and private (professional market makers), across 17+ supported chains.

Swap API is designed to protect your users, streamline integration for developers, and unlock new revenue opportunities for your team.

⛓️ Multi-chain liquidity: Access deep liquidity across major networks. See supported networks.
🤑 Monetize your app: Earn revenue through every swap with built-in fee support.
🛡️ User protection: Our smart contracts reduce allowance risk by supporting modern standards like AllowanceHolder and Permit2 for safer token approvals.
↩️ Reliable execution: We offer some of the lowest revert rates in the industry.
💰 Exclusive RFQ liquidity: Access off-chain liquidity with 0 slippage for RFQ orders. Learn how RFQ works.
🚀 Developer-friendly: Easy to integrate and customizable to your use case.

REST Paths

Download OpenAPI Spec

GET /swap/allowance-holder/price

Documentation

Get the indicative price for a swap using Allowance Holder to set allowances

Sample code

Curl
Axios
Python

00
01

curl https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000 \
-X GET

const axios = require("axios");
(() : {
  const config = {
    headers: {
      "Content-Type": "application/json",
    },
  };
  
  axios
    .get(
      "https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000",
      config
    )
    .then(function (response) {
      // handle success
      console.log(response.data);
    })
    .catch((err) : {
      // handle error
      console.log(err);
    });
})();

import requests
response = requests.get("https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000")
parsed = parse(response.json())
if isinstance(parsed, Ok):
    print(parsed.result)
else:
    logging.error(parsed.message)

GET /swap/allowance-holder/quote

Get the firm quote for a swap using Allowance Holder to set allowances

Sample code

Curl
Axios
Python

00
01

curl https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049 \
-X GET

const axios = require("axios");
(() : {
  const config = {
    headers: {
      "Content-Type": "application/json",
    },
  };
  
  axios
    .get(
      "https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049",
      config
    )
    .then(function (response) {
      // handle success
      console.log(response.data);
    })
    .catch((err) : {
      // handle error
      console.log(err);
    });
})();

import requests
response = requests.get("https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/allowance-holder/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049")
parsed = parse(response.json())
if isinstance(parsed, Ok):
    print(parsed.result)
else:
    logging.error(parsed.message)

GET /swap/chains

Get list of supported chains for swap

Sample code

Curl
Axios
Python

00
01

curl https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/chains \
-X GET

const axios = require("axios");
(() : {
  const config = {
    headers: {
      "Content-Type": "application/json",
    },
  };
  
  axios
    .get(
      "https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/chains",
      config
    )
    .then(function (response) {
      // handle success
      console.log(response.data);
    })
    .catch((err) : {
      // handle error
      console.log(err);
    });
})();

import requests
response = requests.get("https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/chains")
parsed = parse(response.json())
if isinstance(parsed, Ok):
    print(parsed.result)
else:
    logging.error(parsed.message)

GET /swap/permit2/price

Get the indicative price for a swap using Permit2 to set allowances

Sample code

Curl
Axios
Python

00
01

curl https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000 \
-X GET

const axios = require("axios");
(() : {
  const config = {
    headers: {
      "Content-Type": "application/json",
    },
  };
  
  axios
    .get(
      "https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000",
      config
    )
    .then(function (response) {
      // handle success
      console.log(response.data);
    })
    .catch((err) : {
      // handle error
      console.log(err);
    });
})();

import requests
response = requests.get("https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/price?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000")
parsed = parse(response.json())
if isinstance(parsed, Ok):
    print(parsed.result)
else:
    logging.error(parsed.message)

GET /swap/permit2/quote

Get the firm quote for a swap using Permit2 to set allowances

Sample code

Curl
Axios
Python

00
01

curl https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049e \
-X GET

const axios = require("axios");
(() : {
  const config = {
    headers: {
      "Content-Type": "application/json",
    },
  };
  
  axios
    .get(
      "https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049e",
      config
    )
    .then(function (response) {
      // handle success
      console.log(response.data);
    })
    .catch((err) : {
      // handle error
      console.log(err);
    });
})();

import requests
response = requests.get("https://YOUR_QUICKNODE_ENDPOINT_HERE.com/addon/1117/swap/permit2/quote?chainId=1&buyToken=0xdac17f958d2ee523a2206206994597c13d831ec7&sellToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48&sellAmount=100000000&taker=0x70a9f34f9b34c64957b9c401a97bfed35b95049e")
parsed = parse(response.json())
if isinstance(parsed, Ok):
    print(parsed.result)
else:
    logging.error(parsed.message)

Supported Chains

Published on Sep 29, 2025

Support Website Support Email

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