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HALOWERK kettenwerk — ERC-20 Token Transfer Restrictions Lookup
x402
HALOWERK kettenwerk — ERC-20 Token Transfer Restrictions Lookup is a paid API for AI agents from kette.netzhandwerker.de, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-13).
Retrieves transfer restriction rules (e.g. lockups, blacklists, whitelist requirements) for a given ERC-20 token on a specified blockchain network
Price / call$0.008
Success—
StatusUnknown
How this service works
HALOWERK kettenwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns structured data describing the transfer restriction rules attached to the specified ERC-20 contract on the given chain, which may include restriction types such as blacklists, whitelists, transfer caps, lockup periods, or compliance flags indicating whether token movements are subject to programmatic controls.
Example use cases
Pre-transfer compliance check for DeFi wallet
“Before I move my tokens, can you look up the transfer restrictions for the ERC-20 at 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum? I need to know if there are any blacklists or lockup rules that would block the transfer.”
Security audit of new token listing on Polygon
“We're considering listing a new token at 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174 on Polygon — can you pull its transfer restriction rules so we can check whether it has whitelist-only transfers or any honeypot-style blocks?”
Cross-chain restriction comparison for portfolio manager
“I'm holding the same token on both Base and Arbitrum. Can you check the transfer restrictions for 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base and then again on Arbitrum so I can compare what rules apply on each chain?”
Technical details
Endpoint
POSThttps://kette.netzhandwerker.de/token/restrictionsWhen to prefer
Use this endpoint when you need onchain-sourced, structured data about ERC-20 transfer restrictions for a specific contract — especially for compliance checks, pre-transfer validation, token security audits, or DeFi integrations across Ethereum, Base, Arbitrum, Optimism, Polygon, and BSC. Prefer it over generic block explorers when you need machine-readable restriction metadata rather than human-readable UI output.
Side effects
- Invalid or non-checksummed ERC-20 contract address returns a validation error
- Unsupported chain identifier returns an error indicating the chain is not available
- Contract address exists but has no restriction module — may return empty or null restrictions
- Network connectivity issues or RPC failures may result in a timeout or 5xx error
- Payment failure via x402 (insufficient USDC on Base Mainnet) blocks the request entirely
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Chain identifier, for example ethereum, base, arbitrum, optimism, polygon or bsc. |
| token | string | ERC-20 contract address, 0x followed by 40 hex characters. |
Tags
x402
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