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POST
/
api
/
users
/
{userId}
/
redeem
curl -X POST \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "venue": "polymarket",
    "tokenId": "71321045679252212594626385..."
  }' \
  "https://trade.predexon.com/api/users/USER_ID/redeem"

{
  "transactionHash": "0x1234567890abcdef...",
  "venue": "polymarket",
  "tokenId": "71321045679252...",
  "title": "Will Bitcoin reach $100k?",
  "outcome": "Yes",
  "sizeRedeemed": "100.50",
  "result": "won",
  "amountRedeemed": "100.50",
  "status": "completed"
}

curl -X POST \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "venue": "polymarket",
    "tokenId": "71321045679252212594626385..."
  }' \
  "https://trade.predexon.com/api/users/USER_ID/redeem"

{
  "transactionHash": "0x1234567890abcdef...",
  "venue": "polymarket",
  "tokenId": "71321045679252...",
  "title": "Will Bitcoin reach $100k?",
  "outcome": "Yes",
  "sizeRedeemed": "100.50",
  "result": "won",
  "amountRedeemed": "100.50",
  "status": "completed"
}

​
Redemption Flow

1

Check positions

Use Get Positions to find positions with status: redeemable.
2

Verify result

Only positions with result: won return USDC. Losing positions return 0.
3

Redeem

Call this endpoint with the position identifier.
4

Check balance

USDC is credited immediately. Verify with Get Balance.
You can redeem losing positions to clear them from your portfolio, but you’ll receive 0 USDC since they’re worthless.

Authorizations

​
x-api-key
string
header
required

Path Parameters

​
userId
string
required

Unique identifier for the user

Body

application/json
​
venue
enum<string>
required

Trading venue: polymarket or kalshi

Available options:
polymarket,
kalshi
​
tokenId
string

Token ID to redeem (required for Polymarket)

​
ticker
string

Market ticker (required for Kalshi)

​
outcome
enum<string>

Outcome to redeem: Yes or No (required for Kalshi)

Available options:
Yes,
No

Response

200 - application/json

Position redeemed

​
transactionHash
string

Blockchain transaction hash for the redemption

​
venue
string

Trading venue where the redemption occurred

​
tokenId
string

Polymarket token ID (Polymarket redemptions only)

​
ticker
string

Kalshi market ticker (Kalshi redemptions only)

​
title
string

Market question/title

​
outcome
string

The outcome side that was redeemed

​
sizeRedeemed
string

Number of tokens that were burned

​
result
string

Position result: won or lost

​
amountRedeemed
string

USDC received from redemption (0 for losing positions)

​
status
string

Always 'completed' for successful redemptions