# FREE Token Purchase (5 USDC) - x420.dev

> FREE Token Purchase (5 USDC) - x420.dev is a paid API for AI agents from free.x420.dev, paid per call via x402, $5/call, status unknown (last checked 2026-10-19).

Purchases 5 USDC worth of FREE tokens (0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07) on behalf of the caller via a paid API call

## Facts

- Endpoint: GET https://free.x420.dev/api/puff-5?utm_source=zero.xyz
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-token-purchase-5-usdc-x420-dev-965b7fd4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EYAo51bppzK2sUC7kS3VB

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-5-usdc-x420-dev-965b7fd4
```

Example prompt: Buy me 5 USDC worth of FREE tokens (contract 0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07) using x420.dev right now.

## When to prefer this

Use this endpoint when an agent needs to purchase exactly 5 USDC worth of FREE tokens automatically via the x402 payment protocol, and wants confirmation of on-chain transaction hashes. Prefer the 1 USDC sibling endpoint for smaller purchases.

## Known failure modes

- Payment fails or is rejected — no tokens received, transaction hashes null
- Insufficient USDC balance — purchase cannot proceed
- Smart contract swap failure — tokens not delivered but USDC may be consumed
- Network congestion causing transaction timeout
- Invalid or expired payment header causing 402 error

## How this service works

Buy 5 USDC worth of FREE tokens 0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07

## Output

Returns a JSON object with a status message, the number of FREE tokens received, the USDC amount paid, a send transaction hash (or null), and a swap transaction hash (or 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-5-usdc-x420-dev-965b7fd4/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)