Get Exchange Rate

The interface and request parameters for querying token exchange rates are actually the same as those for adding liquidity to the pool.

Through the following interface, you can obtain the current exchange rate of the selected token and the total number of pools in the liquidity pool. The main purpose of this interface in the exchange process is to:

• Display the exchange rate to users

• Calculate the estimated amount that can be exchanged

POST /brc20swap/swap_info

Parameters

export interface SwapInfoBody {
  receive_coin_type: string;
  receive_tick: string;
  send_coin_type: string;
  send_tick: string;
  address: string;
}

Response

export interface SwapTickInfo {
  tick1_volume: string; // Total amount of send_tick tokens in the pool
  tick2_volume: string; // Total amount of receive_tick tokens in the pool
  tick1_per_tick2: string; // Amount of send_tick per 1 receive_tick
  tick2_per_tick1: string; // Amount of receive_tick per 1 send_tick

  token: string; // User credential, to be passed as is to the get_swap_psbt2 interface

  platform_service_fee_percent?: string; // Buy - Platform service fee
  liquider_service_fee_percent?: string; // Buy - LP profit

  platform_service_fee_sell_percent?: string; // Sell - Platform service fee
  liquider_service_sell_percent?: string; // Sell - LP profit
}

Request Body

{
  "send_coin_type": "btc",
  "send_tick": "BTC",
  "receive_coin_type": "runes",
  "receive_tick": "BEVMRUNESTONET",
  "address": "0"
}

cURL Example

curl 'https://test-api-proxy.ddpurse.com/brc20swap/swap_info' \
  -H 'Accept: application/json, text/plain, */*' \
  -H 'Accept-Language: en' \
  -H 'Cache-Control: no-cache' \
  -H 'Connection: keep-alive' \
  -H 'Content-Type: application/json' \
  -H 'Origin: http://localhost:56651' \
  -H 'Pragma: no-cache' \
  -H 'Referer: http://localhost:56651/' \
  -H 'Sec-Fetch-Dest: empty' \
  -H 'Sec-Fetch-Mode: cors' \
  -H 'Sec-Fetch-Site: cross-site' \
  -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36' \
  -H 'sec-ch-ua: "Chromium";v="124", "Google Chrome";v="124", "Not-A.Brand";v="99"' \
  -H 'sec-ch-ua-mobile: ?0' \
  -H 'sec-ch-ua-platform: "macOS"' \
  --data-raw '{"send_coin_type":"btc","send_tick":"BTC","receive_coin_type":"runes","receive_tick":"BEVMRUNESTONET","address":"0"}'

1. If "LiquidPair no found" is prompted, it means that there is no liquidity pool for this token pair.

2. For RUNES, BRC20, and ARC20, the query interfaces are the same, but send_coin_type / receive_coin_type differ.

[2024.04.23 Update] New: address is a required parameter. If the user is not logged in, default to '0'.