---
name: api-dev.agents.skillfulai.io
description: api-dev.agents.skillfulai.io hosts a single demo endpoint that charges $0.01 USDC on Base mainnet via the x402 payment protocol and returns a premium welcome message with on-chain payment verification details. It is a developer-facing test resource for validating x402 payment flows, not a production data or feature service.
host: api-dev.agents.skillfulai.io
---

# api-dev.agents.skillfulai.io

SkillfulAI's demo host provides a minimal, real-money x402 integration test: an agent pays $0.01 USDC on Base mainnet and receives confirmation that the payment was settled and verified on-chain. It serves developers and agent builders who need to confirm that their x402 payment middleware, wallet signing, and receipt handling work correctly against a live network before wiring up real premium endpoints.

## When to use this host

Use this host when an agent or developer needs to verify that x402 USDC payment handling on Base mainnet is functioning correctly — specifically wallet signing, payment settlement, and receipt parsing. Do not use it to access real premium features, retrieve live market or application data, or as a production payment gate; it returns only a static welcome message. For production x402-gated resources or actual data endpoints, route to the appropriate production host. For testnet x402 validation (without spending real USDC), look for a testnet-specific demo host instead.

## Capabilities

### x402 Payment Verification Demo

Executes a real $0.01 USDC payment on Base mainnet and returns on-chain settlement confirmation, payer address, network details, and a premium-tier welcome message to validate end-to-end x402 payment flow.

- **`fetch-premium-mainnet-demo`** — Calls a paid demo endpoint on Base mainnet for $0.01 USDC and returns a premium welcome message with on-chain payment verification details.

## Skill reference

### `fetch-premium-mainnet-demo`

**SkillfulAI X402 Premium Demo** — Calls a paid demo endpoint on Base mainnet for $0.01 USDC and returns a premium welcome message with on-chain payment verification details.

*Use when:* Use when an agent needs to verify that an x402 USDC payment on Base was settled and confirmed, or to demonstrate premium-tier access gating with a real on-chain transaction receipt.

*Not for:* Do not use for production premium feature access or for retrieving live data beyond a welcome message; this is a demo endpoint only.

**Returns:** Returns a JSON object with a premium welcome message, tier='premium', and a payment object containing verified=true, settled=true, payer address, network='base', amount_paid in atomic units, and a transaction hash.

**Example:** `GET https://api-dev.agents.skillfulai.io/api/x402/demo/mainnet/premium`

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