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POST
/
95e61622bf6a8af293978377718e3b77
/
wallet
/
exchangeinject
Add liquidity to an exchange pair
curl --request POST \
  --url https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/exchangeinject \
  --header 'Content-Type: application/json' \
  --data '
{
  "owner_address": "TLyqzVGLV1srkB7dToTAEqgDSfPtXRJZYH",
  "exchange_id": 1,
  "token_id": "1000001",
  "quant": 500000000000,
  "visible": true
}
'
{
  "txID": "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
  "raw_data": {
    "contract": [
      {
        "parameter": {
          "value": {
            "owner_address": "TLyqzVGLV1srkB7dToTAEqgDSfPtXRJZYH",
            "exchange_id": 1,
            "token_id": "1000001",
            "quant": "500000000000"
          },
          "type_url": "type.googleapis.com/protocol.ExchangeInjectContract"
        },
        "type": "ExchangeInjectContract"
      }
    ],
    "ref_block_bytes": "ab91",
    "ref_block_hash": "f5d4c3b2a2",
    "expiration": 1672531320000,
    "timestamp": 1672531260000
  },
  "raw_data_hex": "0a02ab911220f5d4c3b2a240a0c9e2f6e30f5a68081112620a32747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e45786368616e6765496e6a656374436f6e747261637412280a154c7971797a56474c5631737266b7dd4afc8eagg615349220831310313530303031"
}
TRON API method that adds liquidity to an existing exchange trading pair on the TRON decentralized exchange.
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​
Parameters

  • owner_address — the address providing liquidity (base58 with visible: true, or hex with visible: false).
  • exchange_id — unique identifier of the exchange pair to add liquidity to.
  • token_id — TRC10 token ID; use _ to denote TRX.
  • quant — integer amount to add (token base units; if TRX, specify in sun).
  • permission_id — optional permission ID for multi‑signature accounts.

​
Response

Returns a transaction object containing:
  • txID — unique transaction identifier
  • raw_data — raw transaction data including contract details
  • raw_data_hex — hexadecimal representation of raw transaction data

​
Use case

The wallet/exchangeinject method is used for:
  • Adding liquidity to existing trading pairs to earn trading fees
  • Increasing the depth and stability of token markets
  • Participating in liquidity mining and yield farming programs
  • Providing capital to support decentralized exchange operations

​
curl example

Shell
curl --request POST \
  --url 'https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/exchangeinject' \
  --header 'Content-Type: application/json' \
  --data '{
  "owner_address": "TLyqzVGLV1srkB7dToTAEqgDSfPtXRJZYH",
  "exchange_id": 1,
  "token_id": "1000001",
  "quant": 500000000000,
  "visible": true
}'
  • balances must be integers (do not quote numbers). When injecting TRX (using token_id: "_"), provide quant in sun (1 TRX = 1,000,000 sun).
  • the call returns an unsigned transaction; sign and broadcast it to finalize.
  • on mainnet, the exchange must exist, the token must match the pair, and the account must hold sufficient balance.

Body

application/json
​
owner_address
string
required

The address providing liquidity to the exchange pair

​
exchange_id
integer
required

Unique identifier of the exchange pair to add liquidity to

​
token_id
string
required

Token ID being added to the liquidity pool. Use '_' to denote TRX.

​
quant
integer
required

Amount to add as an integer (token base units; if TRX, specify in sun)

​
permission_id
integer

Optional permission ID for multi-signature accounts

​
visible
boolean
default:false

Whether to return human-readable addresses

Response

Successful response with transaction details

​
txID
string

Unique transaction identifier

​
raw_data
object

Raw transaction data including contract details

​
raw_data_hex
string

Hexadecimal representation of raw transaction data

Last modified on November 1, 2025