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Riley Craig x402 Agent Store — Blockchain Transaction Explainer
x402
Riley Craig x402 Agent Store — Blockchain Transaction Explainer is a paid API for AI agents from x402-agent-store.rileycraig14.workers.dev, paid per call via x402, $0.09/call, status unknown (last checked 2026-09-14).
Decodes and explains a blockchain transaction by hash, returning a human-readable summary of the action, method called, and asset changes (e.g. swaps, transfers)
Price / call$0.09
Success—
StatusUnknown
How this service works
Decode any transaction by hash into plain English: what happened (swap/transfer/approval/mint/call), the actors, and the full asset changes (every native+token in/out with symbol, amount, direction), plus status, fee and method. For wallet UX, accounting, risk and trading agents. Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis via Blockscout.
Output
Returns a JSON object with the transaction hash, a short action label (e.g. 'swap'), the contract method name (e.g. 'swapExactETHForTokens'), a plain-English summary sentence, and an array of asset changes each listing symbol, amount, and direction (in/out).
Example use cases
Example prompt
“Can you explain what happened in this Ethereum transaction — hash 0xabc123...def456? I want to know what action was performed, which contract method was called, and what assets moved in or out.”
Technical details
Endpoint
GEThttps://x402-agent-store.rileycraig14.workers.dev/chain/tx-explainWhen to prefer
Use this endpoint when an agent needs to explain or audit a specific on-chain transaction in plain language — especially for DeFi operations like swaps, transfers, or contract interactions. Ideal when the user provides a tx hash and wants asset flows and a human-readable summary without setting up an RPC node or indexer. Prefer over raw RPC calls when interpretability matters.
Side effects
- Invalid or malformed transaction hash returns an error
- Transaction not found on the specified chain returns 404 or empty result
- Unsupported chain identifier causes lookup failure
- Unrecognized or low-level contract calls may yield incomplete method or summary data
- Payment not provided or insufficient USDC causes 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"hash": "0x...",
"action": "swap",
"method": "swapExactETHForTokens",
"summary": "swapped 1.5 ETH for 4,200 USDC via Uniswap V3",
"asset_changes": [
{
"amount": 1.5,
"symbol": "ETH",
"direction": "out"
},
{
"amount": 4200,
"symbol": "USDC",
"direction": "in"
}
]
}
}Tags
x402
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