# ARYSPHERE Ethereum Transaction Explainer

> ARYSPHERE Ethereum Transaction Explainer is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).

Decodes and explains an Ethereum mainnet transaction by hash, returning structured details including transfers, swaps, approvals, fees, and a human-readable summary.

## Facts

- Endpoint: GET https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/eth_tx_explain?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arysphere-ethereum-transaction-explainer-9f84934a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iv1jdNyYqfu4F_C1hPhi9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability arysphere-ethereum-transaction-explainer-9f84934a
```

Example prompt: Can you explain what happened in Ethereum transaction 0x7250ea109382c1c23d3209c766f8a04ca749c17cf9f2ebc2963ac19b56e9966c — what tokens moved, what swaps occurred, and how much it cost in gas?

## When to prefer this

Choose this endpoint when you need a structured, human-readable decode of a specific Ethereum mainnet transaction — especially when you want USD-denominated fees, token transfer details, DEX swap identification, and ERC-20 approval parsing in a single call. Prefer it over raw RPC calls (eth_getTransactionByHash) when you want enriched, interpreted data rather than raw hex. Use it when you don't want to manage API keys or accounts and are comfortable paying $0.002 USDC per call via x402.

## Known failure modes

- Invalid or malformed transaction hash (not 0x + 64 hex) returns an error
- Transaction hash not found on Ethereum mainnet returns empty or error
- Network or RPC node unavailability may cause timeouts
- Payment failure via x402 (insufficient USDC balance or unsupported chain) blocks the call
- Truncated results if the transaction has an unusually large number of logs

## How this service works

ARYSPHERE sells AI-written verdicts on Base and Ethereum token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base, Polygon, and Arbitrum over x402 v2. No account and no API key.

## Output

Returns a JSON object with: transaction hash, from/to addresses, block number, confirmation status, a human-readable summary string, list of token transfers (with USD values and symbols), list of swaps (with DEX and pool), list of ERC-20 approvals, gas fee in ETH and USD, ETH/USD price at time of query (sourced from Chainlink), total log count, NFT transfers, and whether the result was truncated. Also includes RPC call count and service metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "hash": {
       "type": "string",
       "description": "transaction hash, 0x + 64 hex"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "chain": "ethereum",
  "cached": false,
  "method": "explain",
  "result": {
   "to": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
   "from": "0x2c2e035d20cd6da1664a7cf0eaf98e3647607304",
   "hash": "0x7250ea109382c1c23d3209c766f8a04ca749c17cf9f2ebc2963ac19b56e9966c",
   "block": 52718625,
   "swaps": [
    {
     "dex": "uniswap_v3_shape",
     "pool": "0x0abe41c8aaa9282429e06ebed48be36298981d94"
    }
   ],
   "wraps": [],
   "status": "confirmed",
   "eth_usd": 2430.46003758,
   "fee_eth": "0.000003059537476466",
   "fee_usd": 0.0074,
   "summary": "Confirmed in block 52718625; moved 4194.908918312848701351 RECALL, 164.78 USDC; 1 swap(s); 1 approval(s); fee $0.0074.",
   "approvals": [
    {
     "owner": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
     "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
     "amount": "164.78",
     "symbol": "USDC",
     "spender": "0x698cb2b6dd822994581fea6ea4fc755d1363a92f",
     "unlimited": false
    }
   ],
   "rpc_calls": 5,
   "transfers": [
    {
     "to": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
     "usd": 162.62,
     "from": "0x0abe41c8aaa9282429e06ebed48be36298981d94",
     "token": "0x1f16e03c1a5908818f47f6ee7bb16690b40d0671",
     "amount": "4194.908918312848701351",
     "symbol": "RECALL",
     "usd_basis": "uniswap v3 deepest-pool spot"
    },
    {
     "to": "0x0abe41c8aaa9282429e06ebed48be36298981d94",
     "usd": 164.78,
     "from": "0x8ea5ad2a58c1dae75394b1e8636e6518eb6dac50",
     "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
     "amount": "164.78",
     "symbol": "USDC",
     "usd_basis": "dollar stablecoin"
    }
   ],
   "truncated": false,
   "value_eth": "0",
   "value_usd": 0,
   "logs_total": 5,
   "other_logs": 1,
   "nft_transfers": [],
   "eth_usd_source": "chainlink ETH/USD 0x71041dddad3595f9ced3dccfbe3d1f4b0a16bb70",
   "method_selector": "0x708909ad",
   "contract_created": null
  },
  "service": "x402_chain_reads_v1.eth_tx_explain"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arysphere-ethereum-transaction-explainer-9f84934a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.arysphere.com](https://www.zero.xyz/host/api.arysphere.com/llms.txt)