# bald.x420.dev Custom USDC BALD Token Purchase

> bald.x420.dev Custom USDC BALD Token Purchase is a paid API for AI agents from bald.x420.dev, paid per call via x402, $5/call, status unknown (last checked 2026-09-15).

Executes a purchase of BALD tokens on Base using a custom USDC amount specified by the caller

## Facts

- Endpoint: POST https://bald.x420.dev/api/puff-custom
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bald-x420-dev-8c55cc4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jXr2qBs8U1MxpwEzwaRE8

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 bald-x420-dev-8c55cc4f -d '<json body>'
```

Example prompt: Buy me 20 USDC worth of BALD tokens right now.

## When to prefer this

Use this endpoint when you need to purchase a specific, custom USDC-denominated amount of BALD tokens rather than the fixed 1 USDC default. Prefer this over the sibling fixed-amount endpoint when the user wants to control exactly how much USDC to spend (e.g., 10, 0.5, or 50 USDC).

## Known failure modes

- Insufficient USDC balance — transaction cannot be funded
- Invalid or malformed amount string — rejected before execution
- On-chain swap failure — swap transaction hash may be null or transaction reverts
- Network congestion on Base — delayed or failed transaction
- Amount below minimum threshold — API may reject very small amounts
- x402 payment failure — call cannot proceed without successful $5 USDC payment

## How this service works

Buy custom USDC amount worth of BALD tokens 0x110B4ef11db22eEb3caFCB53a58b8B6B1bCDEb07

## Output

Returns a message confirming the purchase, the quantity of BALD tokens received, the USDC amount paid, and the on-chain transaction hashes for both the USDC send and the token swap (which may be null if not yet available).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "amount": {
   "type": "string",
   "description": "Optional amount in USDC (e.g., '10', '10.5', '0.5'). Defaults to 5 if not provided."
  }
 }
}
```

## 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/bald-x420-dev-8c55cc4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bald.x420.dev](https://www.zero.xyz/host/bald.x420.dev/llms.txt)