# Beggar Bot Transfer Build (Base Mainnet)

> Beggar Bot Transfer Build (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 a USDC transfer transaction on Base mainnet for use in onchain payment workflows

## Facts

- Endpoint: GET https://beggar-bot-demand.beggarbot.workers.dev/v1/transferbuild?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-transfer-build-base-mainnet-7612eed8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xRONmoB5JaXNUOlFY9OQa

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-transfer-build-base-mainnet-7612eed8
```

Example prompt: Build me a USDC transfer transaction on Base mainnet to send 5 USDC to 0xAbCd1234... so I can submit it onchain.

## When to prefer this

Use this endpoint when you need to programmatically construct a USDC transfer transaction on Base mainnet or Base Sepolia without manually encoding the calldata. It is distinct from /v1/verify (which checks a transaction) or /v1/risk (which assesses risk) — this endpoint is specifically for building the transfer payload. Prefer it when your agent needs a ready-to-sign transaction object as part of an automated payment workflow on Base.

## Known failure modes

- Invalid or missing recipient address returns an error
- Malformed amount or unsupported token parameters cause build failure
- Unsupported network value (other than base or base-sepolia) returns an error
- Missing required properties in input schema causes 400-level response
- Payment not fulfilled (x402 protocol requires $0.02 USDC on Base mainnet before response is returned)

## 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 a structured JSON transaction payload representing a USDC transfer on Base mainnet (or Base Sepolia), including the token contract address (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), recipient, amount, and other parameters needed to sign and broadcast the transaction onchain.

## 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-transfer-build-base-mainnet-7612eed8/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)