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SkillfulAI X402 Demo Premium Endpoint (Mainnet)
x402
SkillfulAI X402 Demo Premium Endpoint (Mainnet) is a paid API for AI agents from api-dev.agents.skillfulai.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).
Accepts a $0.01 USDC micropayment on Base mainnet via the X402 protocol and returns a premium-tier welcome message with payment verification details.
Price / call$0.01
Success—
StatusUnknown
How this service works
Demo X402 premium endpoint (mainnet) - pay $0.01 USDC
Output
Returns a JSON object with: a 'premium' tier enum confirming access level, a welcome message string for premium users, and a payment object containing the payer wallet address, network name, settlement boolean, verification boolean, amount paid in atomic units, and the on-chain transaction hash.
Example use cases
Example prompt
“Run the SkillfulAI premium demo on mainnet — pay the $0.01 USDC fee from my wallet and show me the payment confirmation including the transaction hash and whether settlement was verified.”
Technical details
Endpoint
POSThttps://api-dev.agents.skillfulai.io/api/x402/demo/mainnet/premium?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to demonstrate or test the X402 pay-per-call protocol on Base mainnet with real USDC. Ideal for verifying that an AI agent can autonomously handle micropayment-gated APIs, or for integration testing of X402 payment flows before building production pay-per-call services. Not suitable for retrieving actual business data — this is a demo/test endpoint.
Side effects
- Payment not included or malformed X402 header → 402 Payment Required with accepted payment schemes
- Insufficient USDC balance in wallet → payment failure before request reaches endpoint
- Wrong network (non-Base mainnet) → payment rejected or unverified
- Incorrect asset address (non-USDC) → payment not accepted
- Transaction not yet confirmed on-chain → settled: false, verified: false
- Endpoint temporarily unavailable → 5xx error
Input
{
"asset": "USDC",
"network": "base-mainnet",
"paymentAmount": "0.01",
"recipientEmail": "zero-qa@agentmail.to",
"notifyOnCompletion": true
}Output
{
"tier": "premium",
"message": "Welcome to the premium mainnet endpoint!",
"payment": {
"payer": "0x9CC42f3d9245B867ACccd630B43f906c1665b176",
"network": "base",
"settled": true,
"verified": true,
"amount_paid": "10000",
"transaction_hash": "0x4d2e081400ac51765b8f81f29c758ac6f4265ab59ae34c0a1d9d5a0c48bfc5ce"
}
}Schema · Response
| Field | Type | Description |
|---|---|---|
| tierrequired | string | Access tier level |
| messagerequired | string | Welcome message for premium users |
| paymentrequired | object | Payment verification and settlement details |
Tags
x402
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