# x420dog Token Purchase - 1 USDC Fixed

> x420dog Token Purchase - 1 USDC Fixed is a paid API for AI agents from x420dog.x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).

Purchases exactly 1 USDC worth of x420dog (0xe44DE6EaaA85e5C55D1EeF8fBB1785B03dcD3B07) tokens on behalf of the caller

## Facts

- Endpoint: GET https://x420dog.x420.dev/api/puff
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x420dog-token-purchase-1-usdc-fixed-9c5e612b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ga9Jp8Og-b-vnrx2Yhy4n

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 x420dog-token-purchase-1-usdc-fixed-9c5e612b
```

Example prompt: Buy me 1 USDC worth of x420dog tokens right now using the x420dog API — I want to see how many tokens I get back and the transaction hashes.

## When to prefer this

Use this endpoint when you want a fixed, simple 1 USDC purchase of x420dog tokens without specifying an amount. Prefer the custom-amount sibling endpoint if you want to spend more or less than exactly 1 USDC. Choose this over the 5 USDC variant when you want minimum exposure or are testing the integration.

## Known failure modes

- Insufficient USDC balance to cover the $1 payment — payment rejected
- Smart contract swap failure — swapTransactionHash null, tokens not received
- Network congestion causing transaction timeout
- Invalid payment header or x402 protocol error
- Token contract liquidity too low to fulfill swap

## How this service works

Buy 1 USDC worth of x420dog tokens 0xe44DE6EaaA85e5C55D1EeF8fBB1785B03dcD3B07

## Output

Returns a message confirming the purchase, the number of x420dog tokens received, the USDC amount paid (should be ~1 USDC), the send transaction hash, and the swap transaction hash (or null if not applicable).

## Example request

```json
{
 "amount": "1",
 "notifyEmail": "zero-qa@agentmail.to",
 "tokenAddress": "0xe44DE6EaaA85e5C55D1EeF8fBB1785B03dcD3B07"
}
```

## 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/x420dog-token-purchase-1-usdc-fixed-9c5e612b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x420dog.x420.dev](https://www.zero.xyz/host/x420dog.x420.dev/llms.txt)