Pre-Swap Request

When selecting a token pair and clicking swap, if it is a BRC20 token, a pre-swap request is required.

Get Transaction Size for swap PSBT

post

Header parameters

AuthorizationstringOptional

token

User-IdstringOptional

Body

send_coin_typestringRequired

send_tickstringRequired

send_amountstringRequired

receive_coin_typestringRequired

receive_tickstringRequired

receive_amountstringRequired

addressstringRequired

slipperstringRequired

fee_rateintegerRequired

insstring[]Required

Only required for BRC20 swaps

methodstringRequired

Use swap for non-routing, pools_swap for routing. Default pools_swap

Responses

post

HTTPcURLJavaScriptPython

POST /brc20swap/get_swap_psbt_txsize HTTP/1.1
Host: 
Content-Type: application/json
Accept: */*
Content-Length: 216

{
  "send_coin_type": "text",
  "send_tick": "text",
  "send_amount": "text",
  "receive_coin_type": "text",
  "receive_tick": "text",
  "receive_amount": "text",
  "address": "text",
  "slipper": "text",
  "fee_rate": 1,
  "ins": [
    "text"
  ],
  "method": "text"
}

{
  "code": 1,
  "msg": "text",
  "data": {
    "tx_size": 1,
    "ins_contain_sats": 1,
    "checksum": "text",
    "vins": [
      "text"
    ],
    "usr_cnt": 1
  }
}

1. Use the same address for both address and btc_address.

2. The response from this endpoint should be passed as is to the get_swap_psbt endpoint.

3. The current slipper (slippage) limit is 12%.