# x420 Token Purchase – $5 USDC Fixed Amount

> x420 Token Purchase – $5 USDC Fixed Amount is a paid API for AI agents from x420.x420.dev, paid per call via x402, $5/call, status unknown (last checked 2026-10-18).

Purchases exactly $5 USDC worth of x420 tokens (contract 0x68e284F21D04D4D62398C290EC3EF41C97F80b07) on behalf of the caller via a fixed-cost swap

## Facts

- Endpoint: GET https://x420.x420.dev/api/puff-5?utm_source=zero.xyz
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x420-x420-dev-7ef95760
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZixoFNvdci9xMB9xRtdws

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 x420-x420-dev-7ef95760
```

Example prompt: Buy me $5 worth of x420 tokens using USDC — use the fixed $5 purchase option for token contract 0x68e284F21D04D4D62398C290EC3EF41C97F80b07.

## When to prefer this

Use this endpoint when you want a simple, fixed $5 USDC purchase of x420 tokens without needing to specify a custom amount. Prefer this over the custom-amount endpoint when the exact spend is $5 and you want a streamlined, single-call experience. Ideal for agents automating small, fixed-size token acquisitions.

## Known failure modes

- Insufficient USDC balance or payment failure — transaction does not complete
- Smart contract swap failure — swap transaction hash may be null indicating the swap did not execute
- Network congestion causing delayed or failed on-chain transaction
- Invalid or unreachable token contract address
- x402 payment protocol failure — payment not accepted

## How this service works

Buy 5 USDC worth of x420 tokens 0x68e284F21D04D4D62398C290EC3EF41C97F80b07

## Output

Returns a JSON object with a confirmation message, the number of x420 tokens received (as a string), the USDC amount paid, a send transaction hash (if applicable), and a swap transaction hash (if applicable). These fields confirm the on-chain swap was executed.

## 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/x420-x420-dev-7ef95760/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x420.x420.dev](https://www.zero.xyz/host/x420.x420.dev/llms.txt)