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POST
https://api.mpcvault.com
/
v1
/
createSigningRequest
curl -X POST https://api.mpcvault.com/v1/createSigningRequest \
  -H "Content-Type: application/json" \
  -H "x-mtoken: YOUR_API_TOKEN" \
  -d '{
    "vaultUuid": "550e8400-e29b-41d4-a716-446655440000",
    "type": {
      "evmSendNative": {
        "walletUuid": "7c9e6679-7425-40de-944b-e07fc1f90ae7",
        "chainId": "1",
        "to": "0x742d35Cc6634C0532925a3b844Bc9e7595f2bD58",
        "value": "1000000000000000000"
      }
    },
    "notes": "Treasury transfer"
  }'

{
  "signingRequest": {
    "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "status": "PENDING",
    "vaultUuid": "550e8400-e29b-41d4-a716-446655440000",
    "walletUuid": "7c9e6679-7425-40de-944b-e07fc1f90ae7",
    "createdAt": "2024-01-15T10:30:00Z"
  }
}
Creates a signing request that can be completed using either the MPCVault mobile app (manual signing) or the API client signer (programmatic signing).

​
Headers

​
x-mtoken
string
required
Your API token

​
Body

​
vaultUuid
string
required
UUID of the vault
​
type
object
required
Transaction type object. See transaction types below.
​
notes
string
Transaction memo
​
callbackClientSignerPublicKey
string
Client signer public key for programmatic signing. Required for API-created wallets.

​
Transaction Types

EVM Chains
TypeFields
evmSendNativewalletUuid, chainId, to, value (wei)
evmSendERC20walletUuid, chainId, contractAddress, to, value
evmMessagewalletUuid, chainId, message, messageType
Other Chains
TypeFields
solanaSendNativewalletUuid, to, value (lamports)
solanaSendSPLTokenwalletUuid, to, tokenMint, value
btcSendNativewalletUuid, to, value (satoshis)
tronSendNativewalletUuid, to, value (sun)
tronSendTRC20walletUuid, contractAddress, to, value
tonSendNativewalletUuid, to, value (nanotons)
aptosSendNativewalletUuid, to, value
suiSendNativewalletUuid, to, value

​
Response

​
signingRequest
object
The created signing request
​
error
object
Error details (if failed)
curl -X POST https://api.mpcvault.com/v1/createSigningRequest \
  -H "Content-Type: application/json" \
  -H "x-mtoken: YOUR_API_TOKEN" \
  -d '{
    "vaultUuid": "550e8400-e29b-41d4-a716-446655440000",
    "type": {
      "evmSendNative": {
        "walletUuid": "7c9e6679-7425-40de-944b-e07fc1f90ae7",
        "chainId": "1",
        "to": "0x742d35Cc6634C0532925a3b844Bc9e7595f2bD58",
        "value": "1000000000000000000"
      }
    },
    "notes": "Treasury transfer"
  }'

{
  "signingRequest": {
    "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "status": "PENDING",
    "vaultUuid": "550e8400-e29b-41d4-a716-446655440000",
    "walletUuid": "7c9e6679-7425-40de-944b-e07fc1f90ae7",
    "createdAt": "2024-01-15T10:30:00Z"
  }
}