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POST
/
api
/
v2
/
customers
/
pre-fund
/
create
Create a pre-fund wallet
curl --request POST \
  --url https://sandbox.killb.app/api/v2/customers/pre-fund/create \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "currency": "USDC",
  "network": "POLYGON"
}
'
{
  "id": "123e4567-e89b-12d3-a456-426614174000",
  "type": "PRE_FUND",
  "address": "0x1234567890abcdef1234567890abcdef12345678",
  "currency": "USDC",
  "network": "POLYGON",
  "active": true,
  "createdAt": "2026-04-23T00:38:08.439Z",
  "updatedAt": "2026-04-23T00:38:08.439Z"
}

Authorizations

​
Authorization
string
header
required

The access token received from the authorization server in the OAuth 2.0 flow.

Body

application/json
​
currency
enum<string>
required
Available options:
COP,
USD,
USDC,
USDT
Example:

"USDC"

​
network
enum<string>
required
Available options:
POLYGON,
ERC20,
SOLANA,
TRON,
ARBITRUM,
BSC
Example:

"POLYGON"

Response

​
id
string<uuid>
required
Example:

"123e4567-e89b-12d3-a456-426614174000"

​
type
string
required
Example:

"PRE_FUND"

​
address
string
required

A wallet address

Example:

"0x1234567890abcdef1234567890abcdef12345678"

​
currency
enum<string>
required
Available options:
COP,
USD,
USDC,
USDT
Example:

"USDC"

​
network
enum<string>
required
Available options:
POLYGON,
ERC20,
SOLANA,
TRON,
ARBITRUM,
BSC
Example:

"POLYGON"

​
active
boolean
required
Example:

true

​
createdAt
string<date-time>
required
Example:

"2026-04-23T00:38:08.439Z"

​
updatedAt
string<date-time>
required
Example:

"2026-04-23T00:38:08.439Z"