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POST
/
kalshi
/
order
/
limit
cURL
curl --request POST \
  --url https://api.example.com/kalshi/order/limit \
  --header 'Content-Type: application/json' \
  --data '
{
  "chain": "base",
  "marketId": "PRES-2024",
  "ccontracts": "1050",
  "priceUusdc": "750000",
  "action": "buy",
  "side": "yes",
  "userAddress": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
  "signature": "0x...",
  "expiry": 1234567890,
  "devAccountId": "bison"
}
'
{
  "success": true,
  "orderId": "<string>",
  "status": "<string>",
  "message": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://docs.bison.markets/llms.txt

Use this file to discover all available pages before exploring further.

To avoid ambiguity, we denote the smallest possible multiple of USDC (0.000001 USDC) as one uusdc, which stands for µUSDC (micro-USDC), and denote the smallest possible multiple of a contract (0.01 contract) as one ccontract (centicontract).User-facing USDC balances are specified as fixed-point strings (e.g. "1.2625" for USDC). Contract quantities in the API and SDK are specified as integer ccontracts strings (e.g. "1050" for 10.50 contracts at precision 2).

Body

application/json
​
chain
enum<string>
required

Chain to execute the action on; one of: base, bsc

Available options:
base,
bsc
Example:

"base"

​
marketId
string
required

ID of the market to buy/sell in

Example:

"PRES-2024"

​
ccontracts
string
required

Number of ccontracts as a positive integer string (1 contract = 100 ccontracts).

Example:

"1050"

​
priceUusdc
string
required

Price per contract in µUSDC (micro-USDC, 1 µUSDC = 0.000001 USD). Must be positive integer string.

Example:

"750000"

​
action
enum<string>
required

Action to execute

Available options:
buy,
sell
Example:

"buy"

​
side
enum<string>
required

Side of the market (yes or no)

Available options:
yes,
no
Example:

"yes"

​
userAddress
string
required

User wallet address

Pattern: ^0x[a-fA-F0-9]{40}$
Example:

"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"

​
signature
string
required

EIP-712 signature from the user authorizing the order

Example:

"0x..."

​
expiry
number
required

Unix timestamp when the authorization expires

Example:

1234567890

​
devAccountId
string

Optional dev account ID to attribute this order to

Example:

"bison"

Response

Order placed successfully

​
success
boolean
required
​
orderId
string
required
​
status
string
required
​
message
string