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POST
Place order (legacy EIP-712 flow)

Authorizations

x-api-key
string
header
required

Required for order endpoints. Obtain your API key from the Vatic dashboard.

Body

application/json
walletId
string<uuid>
required
tokenId
string
required

Polymarket outcome token ID.

side
enum<string>
required
Available options:
BUY,
SELL
price
number
required

Limit price (0.01–0.99).

Required range: 0.01 <= x <= 0.99
size
number
required

Order size in USDC (min 1).

Required range: x >= 1

Response

Order submitted