# FREE Token Purchase - 1 USDC (x420.dev)

> FREE Token Purchase - 1 USDC (x420.dev) is a paid API for AI agents from free.x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-18).

Spends 1 USDC to buy FREE tokens (0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07) on x420.dev via x402 payment protocol

## Facts

- Endpoint: GET https://free.x420.dev/api/puff?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-token-purchase-1-usdc-x420-dev-0f3773f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wNT-oyKDSchKkaMl-MFna

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 free-token-purchase-1-usdc-x420-dev-0f3773f5
```

Example prompt: Buy me 1 USDC worth of FREE tokens on x420.dev — use the x402 payment protocol and let me know how many FREE tokens I received and the transaction hashes.

## When to prefer this

Choose this endpoint when you want to spend exactly 1 USDC to acquire FREE tokens via the x402 micropayment protocol. Prefer this over the 5 USDC sibling endpoint when making a smaller trial purchase or when budget is constrained to 1 USDC. This is purpose-built for programmatic token acquisition on x420.dev using x402.

## Known failure modes

- Insufficient USDC balance — payment of 1 USDC cannot be fulfilled
- x402 payment header missing or malformed — request rejected before swap executes
- On-chain swap failure — swap transaction hash is null and tokens not received
- Token contract unavailable or liquidity insufficient — swap cannot complete
- Network congestion causing transaction timeout

## How this service works

Buy 1 USDC worth of FREE tokens 0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07

## Output

Returns a confirmation message, the amount of FREE tokens received, the USDC amount paid (1 USDC), a send transaction hash (may be null), and a swap transaction hash (may be null) confirming the on-chain token purchase.

## 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/free-token-purchase-1-usdc-x420-dev-0f3773f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from free.x420.dev](https://www.zero.xyz/host/free.x420.dev/llms.txt)