Your wallet never goes unmonitored.
Sentinel is a personal on-chain security agent for Robinhood Chain. It watches your wallet around the clock and tells you, in plain English, when something looks wrong.
What it watches
Sentinel keeps an eye on the things that drain wallets: permissions you granted and forgot, contracts you should not trust, and movements that do not match how you normally use your wallet.
Unexpected approvals
Detects when a contract is given permission to spend your tokens, and flags the ones you did not expect.
Unusual transactions
Monitors your activity against your own history, so a transfer far outside your normal pattern gets noticed.
Suspicious contracts
Flags interactions with contracts that are new, unverified, or behave like known scams.
Balance changes
Tracks token balances and tells you when one drops or changes in a way you did not cause.
Dangerous permissions
Alerts you to broad permissions, such as unlimited spending or full control of a collection.
Alerts you can read
A raw transaction is hard to judge. Sentinel explains what it does, who it involves, and what could go wrong, without the jargon.
approve( spender: 0x8f3a...c21e, amount: 115792089237316195423570985008687907853269984665640564039457584007913129639935 )
You gave an unfamiliar contract permission to spend all of your USDC, with no limit.
That contract was created two hours ago and has no published source code. Anyone controlling it could empty your USDC balance.
Scan your wallet
Enter a Robinhood Chain wallet address to list every token approval that is still active, ranked by risk. Only the public address is needed.
Check before you sign
Paste the calldata from a transaction your wallet is asking you to sign. The decoder reads it in your browser and explains it. Nothing you paste is sent anywhere.
You decide what happens next
Sentinel can recommend revoking a risky approval. Nothing changes until you confirm it yourself. The agent advises and you approve.
Revoke the unlimited USDC approval for 0x8f3a…c21e?
Wallet hygiene
Seven habits that close the most common ways wallets get drained. Your ticks are saved in this browser.
Questions
What Sentinel is, what it is not, and where it stands today.
Which chain does Sentinel watch?
Robinhood Chain mainnet.
Is Sentinel live?
Not yet. Continuous monitoring and alerts are in development. The wallet scanner, decoder and checklist on this page work today. Follow @sentineldot on X for progress.
Does Sentinel hold or move my funds?
No. Sentinel is designed to watch and advise. If it recommends revoking an approval, you confirm the action yourself.
Will it ask for my seed phrase or private key?
No. A watcher only needs your public wallet address. Anyone who asks for your seed phrase or private key is trying to steal from you.
Does the decoder send my data anywhere?
The decoder runs entirely in your browser and makes no network requests with what you paste. The wallet scanner sends the public address you enter to Sentinel, which reads public Robinhood Chain data. It never needs keys.
How does the wallet scanner work?
It reads the approval events your address has emitted on Robinhood Chain mainnet, confirms each permission against the chain's current state, and ranks them by risk. Revoking sends a normal transaction from your own wallet, and you confirm it there.
What can the decoder read?
Token approvals and allowance increases, NFT operator approvals, gasless permit signatures, and token and NFT transfers. Anything else is shown as unrecognized, with a reminder to not sign what you do not understand.