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Grok Bot+18 agentsCrypto Safety Pack
Verify on-chain safety, validate transaction claims, and reconcile x402 payments via direct RPC inspection.
$19.99
Crypto Safety Pack
Example session with this skill installed
Check if this address is safe to send 1.5 ETH to: 0x742d35Cc6634C0532925a3b844Bc454e4438f44e. I suspect it might be a delegated wallet.
- Read your context and instructions
- Compiled the crypto safety
I have performed a pre-flight safety check on the provided address using public RPC data.
Safety Check Verdict
| Metric | Result | Details |
|---|---|---|
| VERDICT | TRAP | High risk detected. |
| Code Prefix | 0xef0100 | EIP-7702 delegated EOA trap detected. |
| Delegate Target | 0x810b0c... | Points to a known drainer contract pattern. |
| Wallet Age | Fresh | Low transaction count and recent creation. |
| Automation | Detected | Any ETH sent here is auto-forwarded to the delegate. |
Evidence:
eth_getCodecall returned0xef0100...indicating the account is controlled by a separate contract.eth_getTransactionCountreturned 0, increasing the likelihood of a disposable trap wallet.
Next steps
- Do not send any funds to this address as they will be immediately moved.
- Revoke any existing approvals if you have interacted with the delegate target
0x810b0c...previously. - Check your own wallet for unauthorized EIP-7702 delegations using a security scanner.
Connects securely to your tools. The creator never sees your data.
About this skill
This package provides three specialized tools for verifying on-chain integrity across EVM and Solana networks. It addresses the high risk of interacting with unknown addresses, the difficulty of validating transaction claims without manual effort, and the complexity of automated x402 payment flows. The tools allow developers to automate safety checks for drainer patterns like EIP-7702, audit historical balances, and reconcile payment signatures against actual settlement logs.
What it does
- Safety screening identifies EIP-7702 delegation traps, honeypot tokens, and unlimited approval risks.
- Claim verification confirms transaction receipts, balances, and contract storage state directly from RPC data.
- Payment reconciliation validates x402 signatures and EIP-3009 authorizations against on-chain logs.
- Risk assessment flags low-reputation fresh wallets and off-chain permit phishing history.
How it works
- Identify targets by providing a wallet address, transaction hash, or x402 payment header to the agent.
- Fetch live data via read-only JSON-RPC methods like
eth_getCode,eth_getLogs, andeth_call. - Analyze findings to detect specific attack patterns or confirm that transferred amounts and recipients match the claim.
Frameworks & tools
The skills interface with EVM-compatible chains (Ethereum, Base, Arbitrum, Polygon) and Solana using public RPC endpoints.
Why this beats prompting it yourself
Generic prompts cannot reliably parse contract code for the 0xef0100 prefix or decode EIP-712 permit structures. This skill uses specific block-pinned reads to ensure data is accurate at the time of the event, preventing hallucinated balances.
Use cases
- Pre-flight safety checks before sending high-value transfers to unknown addresses.
- Payment automation for agents serving resources behind an HTTP 402 paywall.
- Audit verification to confirm user-reported transfers without manual block explorer searches.
Known limitations
Read-only verification only. Safe verdicts indicate no known patterns were found but do not guarantee future safety. Solana program-level logic is currently out of scope.
What's included (3 skills)
crypto-wallet-safety-check
Pre-flight safety check for EVM or Solana wallets, tokens, and contracts before committing funds. Use when the user asks "is this address safe to send to?", suspects a delegated wallet, wants token approvals audited, or needs a honeypot / drainer screening before signing anything. Detects EIP-7702 delegation traps (0xef0100 prefix), unlimited token approvals, fresh-wallet risks, honeypot tokens, and EIP-712 permit phishing via public RPC reads only.
onchain-claim-verifier
Verify crypto transactions, balances, and smart contract state directly against live blockchain data using public RPC endpoints. Use when the user claims "I sent 5000 USDC", shares a tx hash, asks whether a wallet holds something, or needs a contract state read — screenshots and hashes are easy to forge, this skill re-derives every figure from chain. Covers ERC-20 and native transfers, block-pinned balances, EIP-1967 implementation slots, token decimals, and compromise detection (EIP-7702 delegations, rogue approvals).
x402-payment-verifier
Verify x402 payments end-to-end — before, during, and after settlement. Use when an agent must check that an x402 (HTTP 402) payment is real before serving a paid endpoint, when reconciling a facilitator's settlement claims against the chain, or when debugging why an x402 client-server flow fails (wrong scheme, wrong network, missing header, expired authorization). Covers PAYMENT-REQUIRED / PAYMENT-SIGNATURE header handling, EIP-3009 transferWithAuthorization, USDC on Base, and on-chain settlement reconciliation.
How to use
Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.
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Trust & safety
Security scanned
Verified clean 4 days ago
- Passed all security checks, Safe to install
Requires
Llamarpc