# Kingdome CM (KUM) Token Purchase - 1 USDC

> Kingdome CM (KUM) Token Purchase - 1 USDC is a paid API for AI agents from kum.x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-20).

Purchases 1 USDC worth of KUM (Kingdome CM) tokens and sends them to the caller's wallet via an on-chain swap

## Facts

- Endpoint: GET https://kum.x420.dev/api/puff?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kingdome-cm-kum-token-purchase-1-usdc-2121db06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qk4K7lxZ-sHthFntNs6au

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 kingdome-cm-kum-token-purchase-1-usdc-2121db06
```

Example prompt: Buy me 1 USDC worth of KUM tokens from Kingdome CM on x420.dev — I want to acquire KUM (contract 0xF78B2DAf137c96F74D52fD688c3c11355205dB07) and get the transaction hash back.

## When to prefer this

Use this endpoint when you want to buy exactly 1 USDC worth of KUM tokens in a single atomic API call using the x402 payment protocol. Prefer this over the 5 USDC sibling endpoint when making a small exploratory or minimal purchase of KUM tokens.

## Known failure modes

- Insufficient USDC balance to cover 1 USDC payment
- Payment not processed — send transaction hash is null
- Swap fails on-chain — swap transaction hash is null
- Token contract 0xF78B2DAf137c96F74D52fD688c3c11355205dB07 unavailable or liquidity insufficient
- x402 payment protocol failure or facilitator rejection
- Network congestion causing transaction timeout

## How this service works

Buy 1 USDC worth of KUM tokens 0xF78B2DAf137c96F74D52fD688c3c11355205dB07

## Output

Returns a message confirming the purchase, the amount of KUM tokens received, the USDC amount paid, a send transaction hash, and a swap transaction hash (if applicable).

## Response schema (JSON Schema)

```json
{
 "message": "string",
 "tokensReceived": "string",
 "usdcAmountPaid": "string",
 "sendTransactionHash": "string | null",
 "swapTransactionHash": "string | null"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kingdome-cm-kum-token-purchase-1-usdc-2121db06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kum.x420.dev](https://www.zero.xyz/host/kum.x420.dev/llms.txt)