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POST
/
v1-alpha2
/
wallets
/
{walletLocator}
/
balances
Fund Wallet
curl --request POST \
  --url https://staging.crossmint.com/api/v1-alpha2/wallets/{walletLocator}/balances \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <x-api-key>' \
  --data '
{
  "amount": 10,
  "token": "usdxm",
  "chain": "base-sepolia"
}
'
[
  {
    "token": "usdc",
    "decimals": 6,
    "balances": {
      "base": "121000000",
      "ethereum": "121000000",
      "total": "242000000"
    }
  },
  {
    "token": "eth",
    "decimals": 18,
    "balances": {
      "ethereum": "1000000000000000000",
      "total": "1000000000000000000"
    }
  }
]
This is an alpha API and subject to change.
This endpoint is only available in staging and only supports USDXM.

Headers

​
X-API-KEY
string
required

API key required for authentication

Path Parameters

​
walletLocator
string
required

A wallet locator can be of the format:

  • <walletAddress>
  • email:<email>:<walletType>
  • userId:<userId>:<walletType>
  • userId:<userId>:<walletType> (white label user example)
  • phoneNumber:<phoneNumber>:<walletType>
  • twitter:<handle>:<walletType>
  • x:<handle>:<walletType>
  • me:<walletType> (Use when calling from the client side with a client API key)

Body

application/json

Parameters required to fund a wallet

​
amount
number
required

The amount of currency to fund the wallet with. Between 1 and 100

Required range: 1 <= x <= 100
Example:

10

​
token
enum<string>
required

The currency to fund the wallet with. Only USDXM is supported.

Available options:
usdxm
Example:

"usdxm"

​
chain
required

The chain to fund the wallet with

Available options:
arbitrum-sepolia,
avalanche-fuji,
base-sepolia,
ethereum-sepolia,
optimism-sepolia,
polygon-amoy,
sei-atlantic-2-testnet,
skale-nebula-testnet,
soneium-minato-testnet,
viction-testnet
Example:

"base-sepolia"

Response

Funds sent successfully.

​
token
enum<string>
required

The token

Available options:
ape,
bnb,
coti,
eth,
pathusd,
matic,
mnt,
pol,
plume,
sei,
chz,
avax,
xai,
fuel,
hbar,
vic,
ip,
zcx,
u2u,
flow,
usdc,
usdce,
busd,
usdxm,
usdt,
credit,
usdf,
weth,
degen,
eurc,
superverse,
pirate,
wld,
xmeme,
alphausd,
betausd,
thetausd,
bonk,
usdm0,
usdm1,
sol,
sui,
apt,
sfuel,
xion,
xlm
Example:

"eth"

​
decimals
number
required

The number of decimals of the token

Example:

18

​
balances
object
required

The balance of the wallet in different chains

Example:
[
  {
    "token": "usdc",
    "decimals": 6,
    "balances": {
      "base": "121000000",
      "ethereum": "121000000",
      "total": "242000000"
    }
  },
  {
    "token": "eth",
    "decimals": 18,
    "balances": {
      "ethereum": "1000000000000000000",
      "total": "1000000000000000000"
    }
  }
]