Live on Base — paying real USDC

x402 Services
by KyvernLabs

Production APIs that agents pay for with USDC via x402. Every payment tracked through our own Pulse dashboard.

Reference implementations demonstrating x402 payment integration with Pulse analytics.

Price Oracle

$0.001 USDC per call

Live

Real-time crypto prices for AI agents. Returns price, 24h change, market cap, and volume for BTC, ETH, SOL, USDC, and 6+ more tokens.

Endpoint
GETkyvernlabs.com/api/x402/oracle?token=ETH
Parameters
tokenstringToken symbol: BTC, ETH, SOL, USDC, MATIC, AVAX, ARB, OP, LINK
Example Response
{
  "token": "ETH",
  "price_usd": 3245.67,
  "change_24h_pct": 2.14,
  "market_cap_usd": 389000000000,
  "volume_24h_usd": 12400000000,
  "timestamp": "2026-04-03T...",
  "powered_by": "x402"
}
Tracked via withPulse() middlewareVerify on BaseScan

Agent Reputation

$0.01 USDC per call

Live

On-chain wallet reputation scoring. Checks transaction history, balances, and activity to determine if an agent wallet is trustworthy for x402 payments.

Endpoint
GETkyvernlabs.com/api/x402/reputation?address=0x914b67B249bdE528C61fEcC4FC84557BC7Eff33F
Parameters
addressstringWallet address to analyze (0x...)
Example Response
{
  "address": "0x914b...f33F",
  "reputation_score": 75,
  "tier": "good",
  "on_chain": {
    "transaction_count": 42,
    "eth_balance": 0.05,
    "usdc_balance": 19.5
  },
  "analysis": {
    "has_funds": true,
    "is_active": true,
    "can_pay_x402": true
  },
  "powered_by": "x402"
}
Tracked via withPulse() middlewareVerify on BaseScan

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