# Beggar Bot ETH Send Build Utility (Base Mainnet)

> Beggar Bot ETH Send Build Utility (Base Mainnet) is a paid API for AI agents from beggar-bot-demand.beggarbot.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-04).

Builds an ETH send transaction on Base mainnet, payable via x402 micropayment protocol at $0.02 USDC per call.

## Facts

- Endpoint: GET https://beggar-bot-demand.beggarbot.workers.dev/v1/ethsendbuild?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/beggar-bot-eth-send-build-utility-base-mainnet-656a8966
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lZVapfdJkc8n-27-gDl9s

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability beggar-bot-eth-send-build-utility-base-mainnet-656a8966
```

Example prompt: Can you build an ETH send transaction on Base mainnet for me — I want to send 0.05 ETH to 0xAbCd1234... and get back the raw transaction data I can sign and broadcast?

## When to prefer this

Use this endpoint when you need to programmatically build a raw ETH send transaction on Base mainnet (or Base Sepolia) without manually constructing RPC calls. Ideal for agentic workflows where the agent needs a pre-built transaction payload ready for signing. Best suited when operating within the x402 micropayment ecosystem and already interacting with other Beggar Bot utilities.

## Known failure modes

- Invalid or missing recipient address returns error JSON
- Malformed properties parameter causes 400-level error
- x402 payment not provided or invalid results in 402 Payment Required response
- Network parameter typo (e.g. wrong chain name) may return error or default to mainnet
- Insufficient USDC balance for x402 micropayment blocks access

## How this service works

Paid: /v1/verify, /v1/risk, /v1/receipt cost $0.01 USDC per call on Base mainnet via x402 (payTo 0x719227f384b66BFEF00093D6d8d32fA9dC2B40e7); utilities analyze Base mainnet (USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) by default, network=base-sepolia optional; /v1/receipt/verify and discovery files are free. Operator: Beggar Bot.

## Output

Returns JSON containing the constructed ETH send transaction build data, including the transaction object fields needed to sign and submit the transfer on Base mainnet (or Base Sepolia if specified).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/beggar-bot-eth-send-build-utility-base-mainnet-656a8966/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from beggar-bot-demand.beggarbot.workers.dev](https://www.zero.xyz/host/beggar-bot-demand.beggarbot.workers.dev/llms.txt)