# SPX6900 Token Purchase - $5 USDC (x420.dev)

> SPX6900 Token Purchase - $5 USDC (x420.dev) is a paid API for AI agents from spx6900.x420.dev, paid per call via x402, $5/call, status unknown (last checked 2026-10-21).

Purchases $5 USDC worth of SPX6900 (SPX) tokens on-chain and returns transaction details and token amount received

## Facts

- Endpoint: GET https://spx6900.x420.dev/api/puff-5?utm_source=zero.xyz
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spx6900-token-purchase-5-usdc-x420-dev-1a2315e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GD3suaD57cUmrJn2MRg-N

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 spx6900-token-purchase-5-usdc-x420-dev-1a2315e1
```

Example prompt: Buy me $5 worth of SPX6900 tokens right now using USDC — I want to pick up some SPX at the current market price.

## When to prefer this

Use this endpoint when you want to purchase exactly $5 USDC worth of SPX6900 tokens in a single API call with x402 micropayment protocol. Prefer the $1 sibling endpoint for smaller test purchases or when capital efficiency matters more. This endpoint is ideal for agents automating DeFi token accumulation strategies at a fixed $5 increment.

## Known failure modes

- Insufficient USDC balance to cover $5 payment — payment rejected
- Network congestion causing swap transaction failure or timeout
- Slippage too high at time of swap — transaction may revert
- Invalid or expired x402 payment header — authentication failure
- SPX6900 liquidity pool issues causing swap failure
- Smart contract error on token contract 0x893EFB1bf4a9e3299e84FA99dFF7e8EB4C408b07

## How this service works

Buy 5 USDC worth of SPX6900 tokens 0x893EFB1bf4a9e3299e84FA99dFF7e8EB4C408b07

## Output

Returns a JSON object with a confirmation message, the amount of SPX6900 tokens received, the USDC amount paid, the send transaction hash, and the swap transaction hash (both hashes may be null if pending).

## 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/spx6900-token-purchase-5-usdc-x420-dev-1a2315e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from spx6900.x420.dev](https://www.zero.xyz/host/spx6900.x420.dev/llms.txt)