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POST /api/v1/market/remove-liquidity
Auth required: Yes Removes liquidity from a prediction market’s APMM pool by burning LP tokens and receiving base tokens in return. The returned amount depends on the current pool composition.

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Request Body

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marketAddress
string
required
Prediction market contract address.
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lpAmount
string
required
Amount of LP tokens to burn.
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minReceiveAmount
string
required
Minimum base tokens to receive. Slippage protection — transaction reverts if the actual output is below this value.
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deadline
string
required
Unix timestamp. Transaction reverts if not executed before this time.
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userOperation
object
required
Signed ERC-4337 UserOperation. See Buy Tokens for full UserOperation field documentation.

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Example

curl -X POST "https://api-staging.promethex.market/api/v1/market/remove-liquidity" \
  -H "Authorization: Bearer $PRIVY_JWT" \
  -H "Content-Type: application/json" \
  -d '{
    "marketAddress": "0x1234...abcd",
    "lpAmount": "25000000",
    "minReceiveAmount": "24000000",
    "deadline": "1740000000",
    "userOperation": {
      "sender": "0x...",
      "nonce": "0x...",
      "initCode": "0x",
      "callData": "0x...",
      "callGasLimit": "0x...",
      "verificationGasLimit": "0x...",
      "preVerificationGas": "0x...",
      "maxFeePerGas": "0x...",
      "maxPriorityFeePerGas": "0x...",
      "paymasterAndData": "0x...",
      "signature": "0x..."
    }
  }'

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Response

{
  "code": 0,
  "data": {
    "opHash": "0xRemoveLiqOpHash..."
  }
}
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opHash
string
UserOperation hash for the liquidity withdrawal transaction.

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Notes

  • The amount of base tokens received depends on the current pool state and may differ from the original deposit due to trading activity and impermanent loss.
  • You can remove partial or full liquidity at any time while the market is running.
  • After market settlement, any remaining LP positions are automatically redeemable.
  • Set minReceiveAmount to protect against unexpected pool ratio changes.
Removing a large percentage of pool liquidity may significantly impact market depth and increase slippage for traders. Consider the impact on the market before large withdrawals.