Transaction Outcome Predictor

WHAT IT DOES

Transaction Outcome Predictor reads pending transaction data from your wallet or a transaction hash, analyzes the contract address, function signature, arguments, value, gas limit, and wallet balance, and predicts whether the transaction is likely to succeed or fail before you sign. It assesses the risk of failure based on gas limits, balance sufficiency, function type, and contract patterns. The tool generates an AI explanation of the likely outcome and what conditions could affect it.

HOW TO USE

When your wallet prompts you to sign a transaction, copy the transaction hash from your wallet or the requesting dApp. Open the Transaction Outcome Predictor, connect your EVM wallet, and paste the transaction hash into the input field. Click "Look up transaction" to fetch the transaction details and generate a prediction. Alternatively, click "Manual entry" to enter the contract address, function signature, arguments, value, and gas limit directly. The tool will display the predicted outcome (success, failure, or uncertain) with reasons. Review the AI explanation to understand why the transaction is likely to succeed or fail and what conditions could affect the outcome.

TECHNICAL SECTION — TRANSACTION OUTCOME ASSESSMENT

The tool fetches transaction data from the blockchain using the connected wallet's provider, extracting the contract address, value, data payload, gas limit, and wallet balance. It decodes the function signature from the data payload using a built-in lookup table of common signatures including transfer, approve, and transferFrom. The tool then applies a set of heuristics to assess the likely outcome: checking if the gas limit is above the minimum for a simple transfer (21,000), verifying that the wallet balance is sufficient to cover the transaction value, and evaluating the function type for known patterns (approval, transfer, swap). The AI layer receives the decoded data and current wallet context, generating a plain-language assessment of the likely outcome. This approach provides a practical prediction of transaction success without requiring complex simulation.

WHAT IT CANNOT SEE

This tool cannot guarantee that a predicted outcome will match the actual result. It cannot predict state changes that depend on external factors such as other transactions in the same block. It cannot simulate complex multi-step interactions. It cannot detect if the transaction will be front-run. It cannot predict the exact gas cost for the transaction. The user must still verify the transaction details in their wallet before signing. The AI prediction is generated from on-chain data and does not constitute financial advice or a guarantee of success.

PLEASE NOTE

EVM chains only. Predictions are AI-generated from data the app reads on-chain—always review what you are actually signing in your wallet before approving it. The wallet's own signature prompt remains the final and only protection against unwanted transactions. This tool is read-only; it never sends transactions or signs anything on your behalf.