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

application/json

application/json

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --request POST \
  --url '/brc20swap/get_swap_psbt_txsize' \
  --header 'Content-Type: application/json' \
  --data '{
    "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"
  }'

200

x-200:Success

200

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

Success

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%.