# x420 Token - Calm Your Requests (Puff)

> x420 Token - Calm Your Requests (Puff) is a paid API for AI agents from www.x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-09-15).

Purchase 1 USDC worth of x420 tokens via a single GET request, returning token receipt and transaction hashes

## Facts

- Endpoint: GET https://www.x420.dev/api/puff
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x420-token-calm-your-requests-puff-e21ce637
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hs-YwHHcBdbM9gLIGAehm

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-token-calm-your-requests-puff-e21ce637
```

Example prompt: Buy me 1 USDC worth of x420 tokens using the x420.dev puff endpoint — I want to see how many tokens I get and the transaction hashes for both the send and swap.

## When to prefer this

Use this endpoint when an agent needs to programmatically acquire x420 tokens by spending exactly 1 USDC via the x402 micropayment protocol, particularly when building automated token purchasing workflows or testing x402-based token purchase flows.

## Known failure modes

- Payment not included or insufficient — x402 payment challenge returned
- Invalid or expired payment header — authorization failure
- On-chain transaction failure — swap transaction hash may be null with error message
- Network congestion causing delayed or failed swap
- USDC balance insufficient to cover 1 USDC cost

## How this service works

Buy 1 USDC worth of x420 tokens

## 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 (or null), and a swap transaction hash (or null).

## Example request

```json
{
 "amount": "1",
 "currency": "USDC",
 "notifyEmail": "zero-qa@agentmail.to"
}
```

## 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-token-calm-your-requests-puff-e21ce637/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x420.dev](https://www.zero.xyz/host/www.x420.dev/llms.txt)