# PRB Token Purchase (1 USDC Fixed)

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

Purchases exactly $1 USDC worth of PRB tokens (0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07) on behalf of the caller

## Facts

- Endpoint: POST https://prb.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/prb-x420-dev-76e61c28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WZTnyMyER1jE7h-u1PjZx

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 prb-x420-dev-76e61c28 -d '<json body>'
```

Example prompt: Buy me $1 USDC worth of PRB tokens right now — the contract is 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07.

## When to prefer this

Use this endpoint when you want a fixed $1 USDC purchase of PRB tokens without needing to specify an amount. Prefer this over the sibling custom-amount endpoint when the desired spend is exactly $1 USDC and simplicity is preferred. Ideal for recurring micro-purchases or testing PRB token acquisition flows.

## Known failure modes

- Insufficient USDC balance — payment fails, no tokens received
- Smart contract error during swap — swap transaction hash may be null
- Network congestion causes timeout — transaction may be pending
- Invalid or misconfigured payment header — 402 payment required error
- PRB token liquidity insufficient — swap may revert on-chain

## How this service works

Buy 1 USDC worth of PRB tokens 0xb02ec227Ba060Ee60E205c8a626F2330DD4a5B07

## Output

Returns a JSON object with a confirmation message, the amount of PRB tokens received, the USDC amount paid, a send transaction hash, and a swap transaction hash (both hashes may be null if not yet confirmed).

## Example request

```json
{
 "amount": "1",
 "recipient": "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/prb-x420-dev-76e61c28/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prb.x420.dev](https://www.zero.xyz/host/prb.x420.dev/llms.txt)