Solana Transaction Decoder
Decodes any Solana transaction into a human-readable breakdown. Returns all program interactions, token transfers, swap details, fees paid, accounts involved and a plain-English summary of what the transaction did. Useful for auditing transactions, understanding on-chain activity, and debugging agent actions.
Endpoint
Expected Input
| signature | Solana transaction signature (base58) |
Example Output
{
"signature": "5xKj9...",
"type": "Token Swap",
"summary": "Swapped 100 USDC for 0.82 SOL via Jupiter on Raydium",
"programs": [
"Jupiter Aggregator",
"Raydium AMM"
],
"transfers": [
{
"from": "9apA...",
"to": "Pool",
"amount": "100 USDC"
}
],
"feePaid": "0.000025 SOL",
"blockTime": "2026-06-05T10:14:22Z"
}Call this tool
import { wrapFetchWithPayment } from "@x402/fetch";
// Set up x402 client with your wallet
const fetchWithPayment = wrapFetchWithPayment(fetch, client);
const response = await fetchWithPayment("https://modulr402.com/api/marketplace/transaction-decoder", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({"signature":"..."}),
});
const result = await response.json();curl -X POST "https://modulr402.com/api/marketplace/transaction-decoder" \
-H "Content-Type: application/json" \
-d '{"signature":"..."}' {
"signature": "Solana transaction signature (base58)"
}See the developers page for the full x402 setup guide.
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