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xx402 Base Allowance Risk Analyzer
x402
xx402 Base Allowance Risk Analyzer is a paid API for AI agents from x402.xx402.icu, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Analyzes ERC20 token allowance risk between an owner and spender address on the Base chain, returning detailed risk scores, approval history, and recommended actions.
Price / call$0.01
Success—
StatusUnknown
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 structured JSON object including: a human-readable summary and allowance decision, purchase acceptance status, risk breakdown scores, spender profile and token activity, approval events within the specified block window, exposure assessment, revocation priority and unsigned revoke call data, a buyer execution plan, follow-up purchase URLs, and a disclaimer that this is not financial advice.
Example use cases
DeFi approval security audit
“I just connected my wallet 0xba76c7ECa175f67cFcE475c09498f840176bf497 to a new DeFi protocol at 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD and gave it a USDC allowance — can you check the risk of that approval on Base over the last 2000 blocks and tell me if I should revoke it?”
Automated allowance risk monitoring
“Every hour, check the USDC token allowance risk between my agent wallet 0xba76c7ECa175f67cFcE475c09498f840176bf497 and the aggregator at 0x111111125421cA6dc452d289314280a0f8842A65 on Base over a 5000-block window and alert me if the risk level changes.”
Pre-transaction spender vetting
“Before I approve this DEX router 0x198EF1ec325A96CC354C7266a038Be8B5c558F67 to spend my USDC from wallet 0xba76c7ECa175f67cFcE475c09498f840176bf497 on Base, can you pull its approval history and spender risk profile over the last 1000 blocks so I know if it's safe?”
Technical details
Endpoint
GEThttps://x402.xx402.icu/api/base-allowance-risk?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need on-chain ERC20 allowance risk analysis specific to the Base network, including spender profiling, recent approval event scanning, and actionable revocation recommendations. Prefer it over generic blockchain explorers when you want structured, agent-ready risk decisions rather than raw transaction data, and when operating in an x402 micropayment context at $0.01 per call.
Side effects
- Invalid Ethereum address format for owner, spender, or token_address returns a validation error
- window_blocks outside 100–5000 range is rejected
- Unpaid or failed x402 payment results in 402 Payment Required response
- Base RPC unavailability may cause source_status to indicate degraded data
- Token address with no on-chain activity may return empty approval_events and limited risk data
Output
Schema · Response
{
"keys": [
"summary",
"purchase_acceptance",
"buyer_next_action",
"next_paid_call",
"decision_evidence",
"repeat_purchase_guard",
"allowance_decision",
"allowance_action_ticket",
"exact_allowance_result_summary",
"safe_to_keep_allowance",
"follow_up_purchase_urls",
"unsigned_revoke_call",
"buyer_execution_plan",
"priority_queue",
"best_next_products",
"risk_breakdown",
"review_queue",
"avoid_queue",
"revocation_priority",
"allowance",
"exposure",
"spender_profile",
"approval_events",
"spender_token_activity",
"bucket_counts",
"risk",
"source_status",
"not_financial_advice",
"sources"
],
"type": "json"
}Tags
x402
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