# Query Pool Rate

This endpoint allows you to retrieve the current swap rate for a selected token and the total liquidity in the pool for that trading pair. Its main uses are:

* Displaying the swap rate to users
* Calculating the estimated amount obtainable from a swap

## POST /api/pool/liquid/liquid\_info

> Get Liquidity Pool Trading Pair Information

```json
{"openapi":"3.0.1","info":{"title":"Backend API","version":"1.0.0"},"tags":[{"name":"dotswap-ext/info"}],"servers":[{"url":"http://127.0.0.1:8090","description":"Local"}],"paths":{"/api/pool/liquid/liquid_info":{"post":{"summary":"Get Liquidity Pool Trading Pair Information","deprecated":false,"description":"","tags":["dotswap-ext/info"],"parameters":[],"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"tick1":{"type":"object","properties":{"coin_type":{"type":"string"},"tick":{"type":"string"},"token_id":{"type":"string"}},"required":["coin_type","tick","token_id"]},"tick2":{"type":"object","properties":{"coin_type":{"type":"string"},"tick":{"type":"string"},"token_id":{"type":"string"}},"required":["coin_type","tick","token_id"]}},"required":["tick1","tick2"]}}}},"responses":{"200":{"description":"Success","content":{"application/json":{"schema":{"type":"object","properties":{"code":{"type":"integer"},"msg":{"type":"string"},"data":{"type":"object","properties":{"tick1":{"type":"object","properties":{"coin_type":{"type":"string"},"tick":{"type":"string"},"token_id":{"type":"string"}},"required":["coin_type","tick","token_id"]},"tick2":{"type":"object","properties":{"coin_type":{"type":"string"},"tick":{"type":"string"},"token_id":{"type":"string"}},"required":["coin_type","tick","token_id"]},"tick1_amount":{"type":"string"},"tick2_amount":{"type":"string"},"liquid_fee_buy_percent":{"type":"string","title":"Buy LP fee rate (a -> b)"},"liquid_fee_sell_percent":{"type":"string","title":"Sell LP fee rate (b -> a)"},"platform_fee_buy_percent":{"type":"string","title":"Buy platform fee rate (a -> b)"},"platform_fee_sell_percent":{"type":"string","title":"Sell platform fee rate (b -> a)"},"tick1_per_tick2":{"type":"string"},"tick2_per_tick1":{"type":"string"}},"required":["tick1","tick2","tick1_amount","tick2_amount","liquid_fee_buy_percent","liquid_fee_sell_percent","platform_fee_buy_percent","platform_fee_sell_percent","tick1_per_tick2","tick2_per_tick1"]},"req_id":{"type":"string"}},"required":["code","msg","data","req_id"]}}}}}}}}}
```

{% hint style="info" %}

1. If you receive a 'LiquidPair not found' error (code: 10180006), it indicates that no liquidity pool exists for this trading pair.
   {% endhint %}