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POST
/
wallet
/
fee
Estimate fee
curl --request POST \
  --url https://api.onswitch.xyz/wallet/fee \
  --header 'Content-Type: application/json' \
  --header 'x-service-key: <api-key>' \
  --data '
{
  "wallet_id": "68d4f2a91eb37c15b8e3a4f7",
  "amount": 10,
  "asset": "base:usdc"
}
'
{
  "success": true,
  "message": "Wallet transfer fee estimated successfully",
  "timestamp": "2026-04-18T14:22:08.631Z",
  "data": {
    "estimated_fee": 0.18316
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.onswitch.xyz/llms.txt

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

Authorizations

​
x-service-key
string
header
required

Service key for API authentication

Body

application/json
​
wallet_id
string
required

Unique identifier for the wallet

Pattern: ^[a-f0-9]{24}$
​
amount
number
required

Transfer amount to estimate fee for

Required range: x > 0
​
asset
enum<string>
required
Available options:
base:usdc,
solana:usdc,
solana:usdt,
ethereum:usdc,
ethereum:usdt,
polygon:usdc,
polygon:usdt,
bsc:usdc,
bsc:usdt,
arbitrum:usdc,
optimism:usdc,
gnosis:usdc,
gnosis:usdt,
arbitrum:usdt,
avalanche:usdc,
monad:usdc,
optimism:usdt,
monad:usdt,
plasma:usdt,
avalanche:usdt,
tron:usdt,
linea:usdt,
mantle:usdt,
hyperevm:usdt,
berachain:usdt,
linea:usdc,
berachain:usdc,
sonic:usdc,
base:cngn,
bsc:cngn

Response

Wallet transfer fee estimated successfully

​
success
boolean
required
​
message
string
required
​
timestamp
string<date-time>
required
​
data
object
required