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Arbitrum Proxy Implementation Lookup
Arbitrum Proxy Implementation Lookup is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown.
Detects and identifies the proxy pattern and underlying implementation contract behind any proxy contract on Arbitrum One by reading EIP-1967, EIP-1822, EIP-1167, and OpenZeppelin proxy storage slots.
Price / call$0.01
Success—
StatusUnknown
How this service works
Find the implementation behind a proxy contract on Arbitrum One: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.
Output
Returns a JSON object with: isProxy (boolean indicating if proxy was detected), kind (string naming the proxy pattern, e.g. 'EIP-1967', 'UUPS', 'Minimal Proxy'), implementation (address of the logic contract), admin (address of the proxy admin if applicable), beacon (beacon address if applicable), upgradeable (boolean), chain ('arbitrum-one'), and chainId (42161).
Example use cases
Verify upgradeable DeFi contract before interaction
“Before I interact with this Arbitrum contract at 0x489ee077994B6658eAfA855C308275EAd8097C4E, can you check if it's a proxy and tell me what the real implementation is and whether someone can swap out the code?”
Audit proxy admin for security review
“I'm doing a security review — can you look up the proxy details for 0x5979D7b546E38E414F7E9822514be443A4800529 on Arbitrum One and tell me the kind of proxy, who the admin is, and what implementation it points to?”
Decode contract before decoding ABI
“I want to decode calls to 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum, but I think it might be a proxy — can you resolve its implementation address first so I use the right ABI?”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/arb/proxy?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to resolve proxy contract relationships on Arbitrum One before trusting, auditing, or ABI-decoding a contract. Prefer this over generic Ethereum proxy tools when the target is on Arbitrum One (chainId 42161). For a full security risk verdict, pair with or prefer contract_risk; for other chains use the matching Optimism or Polygon proxy endpoints from the same provider.
Side effects
- 400 Bad Request if the address is malformed or not a valid 0x hex address (not charged)
- 404 Not Found if the address has no deployed contract code on Arbitrum One (not charged)
- May return isProxy: false with no implementation if the contract exists but is not a proxy
- Beacon or admin fields may be null if not applicable to the detected proxy kind
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| addressrequired | string | 0x contract address |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| kind | string | |
| admin | string | |
| chain | string | |
| beacon | — | |
| address | string | |
| chainId | number | |
| isProxy | boolean | |
| upgradeable | boolean | |
| implementation | string |
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