# x420.dev Spark Token Purchase

> x420.dev Spark Token Purchase is a paid API for AI agents from x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-18).

Purchases $1 USDC worth of x420 tokens via the Spark endpoint using x402 payment protocol

## Facts

- Endpoint: POST https://x420.dev/api/spark?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x420-dev-f6ef9f0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ak3BduORu1vhB7gz0f9aI

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-dev-f6ef9f0d -d '<json body>'
```

Example prompt: Buy me $1 worth of x420 tokens using the Spark endpoint on x420.dev — use my USDC balance to pay.

## When to prefer this

Use this endpoint when you specifically want to purchase exactly $1 USDC worth of x420 tokens via the x402 protocol on x420.dev. Prefer the sibling 5 USDC endpoint if a larger purchase is desired.

## Known failure modes

- Insufficient USDC balance — payment fails with 402 or payment error
- x402 payment header missing or malformed — request rejected
- Network or blockchain congestion causing transaction delay or failure
- Token liquidity issues on x420.dev preventing purchase
- Invalid or expired payment authorization

## How this service works

Spark x420

## Output

A confirmation of the token purchase transaction, including the amount of x420 tokens acquired in exchange for 1 USDC, likely with transaction details or receipt.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x420-dev-f6ef9f0d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x420.dev](https://www.zero.xyz/host/x420.dev/llms.txt)