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POST
/
prepare-transactions
/
newSto
newSto
curl --request POST \
  --url https://api.sandbox.brickken.com/prepare-transactions/newSto \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "method": "newSto",
  "signerAddress": "0x742d35Cc6634C0532925a3b8D4C9db96c4b4d8b",
  "chainId": "aa36a7",
  "tokenizerEmail": "tokenizer@example.com",
  "tokenSymbol": "EXMPL",
  "tokenAmount": "1000",
  "offeringName": "Series A",
  "startDate": "2026-09-01T00:00:00.000Z",
  "endDate": "2026-12-31T23:59:59.000Z",
  "acceptedCoin": "USDT",
  "minRaiseUSD": "10000",
  "maxRaiseUSD": "100000",
  "minInvestment": "100",
  "maxInvestment": "10000"
}
'
{
  "transactions": [
    {}
  ],
  "txId": "<string>"
}
Prepares unsigned transactions for creating a new Security Token Offering (STO). This endpoint is equivalent to calling /prepare-transactions with method=newSto.

Authorizations

​
x-api-key
string
header
required

Body

application/json

Request body for newSto.

​
method
enum<string>
required

Required. Must be newSto.

Available options:
newSto
​
signerAddress
string
required

Required. Wallet address that will sign the prepared transaction.

​
chainId
string
required

Required. Blockchain network identifier. Hex format is recommended, for example Sepolia aa36a7.

​
tokenizerEmail
string<email>
required

Required. Tokenizer email.

​
tokenSymbol
string
required

Required. Token symbol. Must be 2 to 5 uppercase letters or numbers.

​
tokenAmount
string
required

Required. Number of tokens offered in the STO.

​
offeringName
string
required

Required. Name of the STO offering.

​
startDate
string<date-time>
required

Required. STO start date.

​
endDate
string<date-time>
required

Required. STO end date.

​
acceptedCoin
string
required

Required. Accepted payment token symbol.

​
minRaiseUSD
string
required

Required. Minimum raise amount in USD.

​
maxRaiseUSD
string
required

Required. Maximum raise amount in USD.

​
minInvestment
string
required

Required. Minimum investment amount.

​
maxInvestment
string
required

Required. Maximum investment amount.

​
gasLimit
string

Optional. Gas limit override. If omitted, the API estimates gas automatically.

​
privateRpcUrl
string

Optional. Private RPC URL override. If omitted, the API uses the configured RPC for chainId.

​
nonce
integer

Optional. Nonce override. If omitted, the API reads the pending nonce from the RPC.

Response

200 - application/json

Successful response

​
transactions
object[]
required
​
txId
string
required