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HALOWERK kettenwerk – Wallet Token Allowances
x402
HALOWERK kettenwerk – Wallet Token Allowances is a paid API for AI agents from kette.netzhandwerker.de, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Returns all ERC-20 token allowances granted by a wallet on a given blockchain, filtered by minimum USD value at risk.
Price / call$0.004
Success—
StatusUnknown
How this service works
HALOWERK kettenwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
A list of ERC-20 token allowance records for the specified wallet on the given chain. Each entry typically includes the approved spender contract, token details, allowance amount, and estimated USD value at risk. Entries without a known market price are included regardless of the minimum value filter.
Example use cases
DeFi security audit before revoke
“Show me every token approval my wallet 0xDeF9876543210dEf9876543210dEf9876543210 has granted on Base that's worth at least $10 — I want to figure out which ones to revoke.”
Post-hack exposure assessment
“My friend thinks their wallet 0xA1B2C3D4E5F6A1B2C3D4E5F6A1B2C3D4E5F6A1B2 may have been phished on Arbitrum — can you list all token allowances, including ones with no known price, so we can see the full exposure?”
Routine multi-chain allowance monitoring
“Give me a summary of all token allowances above $100 for wallet 0x1111222233334444555566667777888899990000 on Polygon so I can decide if anything looks suspicious.”
Technical details
Endpoint
POSThttps://kette.netzhandwerker.de/wallet/allowancesWhen to prefer
Use this endpoint when you need a structured, filterable list of on-chain ERC-20 allowances for a specific wallet across popular EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BSC). It is ideal for security audits, revocation workflows, and risk dashboards where you want to focus on allowances above a USD threshold. Prefer it over general block explorers when you need clean, machine-readable output with value-at-risk filtering rather than raw transaction data.
Side effects
- Invalid wallet address format (not 0x + 40 hex chars) returns a validation error
- Unsupported or misspelled chain identifier returns an error or empty result
- Wallet with no allowances returns an empty list
- Payment failure (x402) if USDC balance on Base Mainnet is insufficient
- Rate limiting or service unavailability from upstream chain RPC nodes
- Tokens without price data are included but may lack USD value estimates
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Chain identifier, for example ethereum, base, arbitrum, optimism, polygon or bsc. |
| wallet | string | Wallet address, 0x followed by 40 hex characters. |
| min_value_usd | number | Only report entries whose value at risk reaches this amount. Entries without a known price are always kept. |
Tags
x402
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