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Base ERC-20 Allowance Scanner
x402
Base ERC-20 Allowance Scanner is a paid API for AI agents from geld-machen-x402.fly.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Scans a Base EVM address and returns all active ERC-20 token allowances, enabling users to identify potentially risky token approvals.
Price / call$0.02
Success—
StatusUnknown
How this service works
TIP-OF-SPEAR: URL Fingerprint ($0.01) GET ?url= → body_sha256/TLS/DNS. DEMAND-MATCHED SERP tip: Web Search ($0.02) GET ?q= (required) → ranked results. OCR tip: Image OCR ($0.01) GET ?url= → Tesseract text (COGS=0). Builder tool: Bazaar Readiness Check — FREE ?url= indexed yes/nein + issue count; PAID report $0.05 Fix-JSON. Gated-data: Base DeFi Snapshot ($0.03) balances+gas+protocol TVL/APY. Free teasers have no live hash/results. Upsell red-flag $0.25. Ladder: 0.01→0.02→0.025→0.25→0.35→0.49→0.75→17.
Output
Returns a JSON object listing all active ERC-20 allowances associated with the provided Base address, including spender contract addresses, approved token amounts (including unlimited approvals), and potentially associated risk metadata.
Example use cases
Wallet security audit before revocation
“My Base wallet is 0xAbCd1234...5678 — can you scan it for all active ERC-20 token allowances so I can see which contracts still have approval to spend my tokens and figure out what to revoke?”
DeFi risk check after protocol hack
“I used a DeFi protocol on Base that just got hacked. Can you check my wallet 0xDEAD...BEEF for any ERC-20 allowances that might still be open to that protocol's contracts?”
Onboarding allowance review for new users
“I'm new to DeFi on Base and want to understand what token approvals I've given out — can you scan address 0x9999...AAAA and list every contract that has permission to move my ERC-20 tokens?”
Technical details
Endpoint
GEThttps://geld-machen-x402.fly.dev/product/base-allowance-scan.jsonWhen to prefer
Choose this endpoint when you need to programmatically enumerate ERC-20 token allowances for a specific Base network wallet address, particularly for security audits, risk assessments, or pre-revocation reviews. Prefer it over manual block explorer lookups when automating wallet health checks or building DeFi safety workflows.
Side effects
- Invalid or malformed EVM address returns an error response
- Address with no allowances returns an empty list
- Network connectivity issues to Base RPC may result in timeout or partial data
- Non-Base chain addresses (e.g. Ethereum mainnet) may return incorrect or empty results
- Rate limiting or payment failure returns 402 or 429 status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| addressrequired | string | Required Base EVM address to scan ERC-20 allowances |
Output
Schema · Response
{}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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