Send

Constructs an unsigned ETH or USDC transfer transaction on Base. Returns the raw transaction object for the client to sign and broadcast.

Endpoint

POST https://pinionos.com/skill/send

Price: $0.01 USDC per call (x402 on Base)

Request Body

{
  "to": "0x...",
  "amount": "0.1",
  "token": "ETH"
}

Field	Type	Required	Description
to	string	yes	Recipient address (0x, 40 hex chars)
amount	string	yes	Amount to send (human-readable)
token	string	yes	ETH or USDC

Example Request

curl -X POST https://pinionos.com/skill/send \
  -H "Content-Type: application/json" \
  -d '{"to":"0x7a21...","amount":"0.05","token":"ETH"}'

The first request returns HTTP 402 with payment requirements. Sign a USDC TransferWithAuthorization (EIP-3009) and retry with the X-PAYMENT header.

Example Response (ETH)

{
  "tx": {
    "to": "0x7a21...",
    "value": "0xb1a2bc2ec50000",
    "data": "0x",
    "chainId": 8453
  },
  "token": "ETH",
  "amount": "0.05",
  "network": "base",
  "note": "Sign this transaction with your private key and broadcast to Base.",
  "timestamp": "2026-02-16T12:00:00.000Z"
}

Example Response (USDC)

{
  "tx": {
    "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "value": "0x0",
    "data": "0xa9059cbb...",
    "chainId": 8453
  },
  "token": "USDC",
  "amount": "10",
  "network": "base",
  "note": "Sign this transaction with your private key and broadcast to Base.",
  "timestamp": "2026-02-16T12:00:00.000Z"
}

When to Use

• Transfer ETH or USDC to another address on Base.
• Build payment workflows where the agent constructs the tx and the user (or another agent) signs.
• Fund a sub-wallet or pay for services.