# Beggar Bot Swap Best (Base Mainnet)

> Beggar Bot Swap Best (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).

Returns the best available swap route or rate for a token pair on Base mainnet, paid via x402 micropayment

## Facts

- Endpoint: GET https://beggar-bot-demand.beggarbot.workers.dev/v1/swapbest?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-swap-best-base-mainnet-8d184042
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MLudA82O7Fd9j041_hjmY

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-swap-best-base-mainnet-8d184042
```

Example prompt: What's the best swap route available right now to trade USDC for ETH on Base mainnet? I want to compare across DEXes and get the best output amount.

## When to prefer this

Use this endpoint when you need to find the optimal swap route or best price for a token pair on Base mainnet before or instead of executing a trade. Prefer this over manual DEX checks when you want aggregated best-rate data with micropayment access via x402, especially in automated agent workflows on Base.

## Known failure modes

- Invalid or unsupported token pair returns an error
- Payment not completed via x402 results in 402 Payment Required response
- Unsupported network parameter returns an error
- Low liquidity or no route found may return empty or error result
- Malformed query parameters result in 400 Bad Request

## 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

A JSON response describing the best available swap route or rate for the requested token pair on Base mainnet, likely including the recommended DEX or aggregator, expected output amount, price impact, and routing path details.

## 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-swap-best-base-mainnet-8d184042/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)