---
name: x402helper.xyz
description: x402helper.xyz exposes a single endpoint that verifies x402 micropayments on Base or Solana and returns confirmation details including price, network, and supported assets. It is fixed to a 0.001 USDC charge and is explicitly scoped to testing x402 payment integration flows.
host: x402helper.xyz
---

# x402helper.xyz

x402helper.xyz is a minimal test utility host for developers integrating the x402 payment protocol. It serves agents and developers who need to validate that an x402 payment handshake completes correctly on Base or Solana mainnet without building their own verification endpoint. It is not a general-purpose billing or payment processing service.

## When to use this host

Use this host when an agent needs to smoke-test an x402 payment integration on Base or Solana mainnet and confirm the full billing handshake completes correctly. It is not suitable for production billing verification, variable-amount payments, or any network other than Base or Solana. Do not use it to verify real user transactions or arbitrary USDC amounts — it always charges exactly 0.001 USDC. For production payment verification or support for other networks and amounts, a purpose-built billing backend or a more general x402-compatible payment processor should be used instead.

## Capabilities

### x402 Payment Verification

Confirms that an x402 micropayment has been successfully processed and returns structured billing confirmation including status, price, network, receiver, and facilitator details.

- **`verify-x402-test-billing`** — Verifies an x402 micropayment on Base or Solana and returns confirmation that billing passed, including price, network, and supported assets.

## Skill reference

### `verify-x402-test-billing`

**x402 Test Billing** — Verifies an x402 micropayment on Base or Solana and returns confirmation that billing passed, including price, network, and supported assets.

*Use when:* Use when an agent needs to confirm that an x402 payment has been successfully processed and billing verification has passed, particularly for testing payment flows on Base or Solana mainnet.

*Not for:* Do not use for production billing verification of arbitrary amounts; this endpoint charges a fixed 0.001 USDC and is intended for testing x402 payment integration.

**Returns:** Returns status 'ok', a confirmation message, the charged price (0.001 USDC), the receiving network and address, a verification timestamp, and a list of supported USDC assets on Base and Solana.

**Example:** `GET https://x402helper.xyz/test-billing`

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