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xx402 Base Chain Contract Inspector
x402
xx402 Base Chain Contract Inspector is a paid API for AI agents from x402.xx402.icu, paid per call via x402, $0.001/call, status down (last checked 2026-10-27).
Inspects a Base/EVM address to determine if it is a contract, detect proxy patterns, and return risk/decision signals for autonomous agents.
Price / call$0.001
Success—
StatusDown
How this service works
Paid Base token, wallet, DeFi, chain-read, x402 buyer/seller discovery, and specialized Bitcoin 15-minute Up/Down prediction-market data packets for autonomous agents and risk tools.
Output
Returns a JSON object with keys including: summary (human-readable verdict), decision (safe/review/avoid signal), account and contract metadata, detected proxy_slots, next_products recommendations, priority_queue/review_queue/avoid_queue classification lists, risk_breakdown details, bucket_counts, source_status, and raw sources used for the assessment.
Example use cases
DeFi protocol due diligence
“Before my agent sends funds to 0xba76c7ECa175f67cFcE475c09498f840176bf497 on Base, check if it's a legitimate deployed contract and flag any proxy upgrade risks or avoid signals.”
Automated contract risk screening
“Screen the Base contract at 0x1234567890abcdef1234567890abcdef12345678 — tell me whether it lands in the priority, review, or avoid bucket and summarize the risk breakdown.”
Proxy pattern detection for audit
“I need to know if the smart contract at 0xAbCdEf0123456789AbCdEf0123456789AbCdEf01 on Base uses a proxy pattern — show me the proxy slots and any upgrade hints so I can flag it for a manual audit.”
Technical details
Endpoint
GEThttps://x402.xx402.icu/api/base-chain/contract?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to quickly determine whether a Base/EVM address has deployed contract code, detect proxy upgrade patterns, and receive a structured risk decision (priority/review/avoid) before interacting with or routing funds to that address. Prefer it over generic block explorers when you need machine-readable risk signals and queue classifications suitable for autonomous agent decision-making.
Side effects
- Invalid address format (non-0x or wrong length) — schema validation error
- Address is an EOA with no contract code — returns summary indicating no contract deployed
- RPC or chain-read failure — source_status may show degraded or partial data
- Payment not processed (x402 flow incomplete) — 402 Payment Required response
- Rate limiting or service unavailability — 5xx error
Output
Schema · Response
{
"keys": [
"summary",
"decision",
"account",
"contract",
"proxy_slots",
"next_products",
"priority_queue",
"risk_breakdown",
"review_queue",
"avoid_queue",
"bucket_counts",
"source_status",
"sources"
],
"type": "json"
}Tags
x402
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