# ARYSPHERE Ethereum Mainnet Logs & Transaction Reader

> ARYSPHERE Ethereum Mainnet Logs & Transaction Reader is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-17).

Fetches Ethereum mainnet event logs filtered by contract address/topic and retrieves transaction details by hash, paid per call in USDC via x402.

## Facts

- Endpoint: GET https://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_logs_and_tx?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arysphere-ethereum-mainnet-logs-transaction-reader-08fbbbfd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_moLp8kMqflYvbyrdh22Dn

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-mainnet-logs-transaction-reader-08fbbbfd
```

Example prompt: Pull the latest event logs for Ethereum contract 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 filtered by Transfer topic 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef over the last 20 blocks, and also get the transaction details for hash 0xc43fe089e6e8de6c1bf47a65f74661323154af09655dbde2c7f728e768d864eb on Ethereum mainnet.

## When to prefer this

Choose this endpoint when you need to read Ethereum mainnet event logs and/or transaction details without setting up your own RPC node, API key, or account. Ideal for agents that need pay-per-call, keyless blockchain reads on Ethereum mainnet via x402 USDC micropayments. Prefer over alternatives when you need both logs (eth_getLogs) and transaction data (eth_getTransactionByHash) in a single call, or when you want no subscription overhead.

## Known failure modes

- Invalid transaction hash format returns error on the transaction part
- Contract address in wrong format (not 0x + 40 hex) causes validation failure
- topic0 hash not properly formatted causes log filter to return no results
- blocks value out of range 1-100 returns validation error
- Network unavailability on Ethereum mainnet causes downstream RPC error
- No logs found for the given filter returns empty logs array with count 0

## How this service works

ARYSPHERE sells AI-written verdicts on Base 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 over x402 v2. No account and no API key.

## Output

Returns a JSON object with two parts: eth_mainnet_eth_getlogs (array of raw log objects with address, topics, data, blockNumber, transactionHash, logIndex, etc., plus count and truncation info) and eth_mainnet_eth_gettransactionbyhash (full transaction object with from, to, gas, input, r/s/v signatures, type, and hash). The ok field indicates success for each part.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "hash": {
       "type": "string",
       "description": "transaction hash, 0x + 64 hex"
      },
      "blocks": {
       "type": "string",
       "description": "optional, last N blocks, 1-100 (default 10)"
      },
      "topic0": {
       "type": "string",
       "description": "optional event signature hash, 0x + 64 hex"
      },
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "contract, 0x + 40 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,
  "parts": {
   "eth_mainnet_eth_getlogs": {
    "ok": true,
    "chain": "ethereum",
    "method": "eth_getLogs",
    "result": {
     "logs": [
      {
       "data": "0x0000000000000000000000000000000000000000000000000000000011000a58",
       "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x000000000000000000000000bdb3ba9ffe392549e1f8658dd2630c141fdf47b6"
       ],
       "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
       "removed": false,
       "logIndex": "0x17",
       "blockHash": "0xf88c7d6da7b73bdf869dac8661602de3f98f208d7eb052a1073edd6e5041a363",
       "blockNumber": "0x18ff029",
       "blockTimestamp": "0x6ad30f1b",
       "transactionHash": "0x4c1a6d22ae7677c3c500e5ad82827193dbc4aaf488a6af3c3e7c8ce5e04334a0",
       "transactionIndex": "0x2"
      },
      {
       "data": "0x0000000000000000000000000000000000000000000000000000000002faf080",
       "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x000000000000000000000000924e1b33b1fc3041351b2082ddd11d5c8bcca370"
       ],
       "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
       "removed": false,
       "logIndex": "0x39",
       "blockHash": "0xf88c7d6da7b73bdf869dac8661602de3f98f208d7eb052a1073edd6e5041a363",
       "blockNumber": "0x18ff029",
       "blockTimestamp": "0x6ad30f1b",
       "transactionHash": "0x6cb83f77e12d2b4be5980a47bcfd0f3a24a3743cbc49775a323172f539610a5f",
       "transactionIndex": "0x8"
      }
     ],
     "count": 1394,
     "to_block": 26210354,
     "truncated": true,
     "from_block": 26210345
    },
    "service": "x402_eth_reads_v1.eth_mainnet_eth_getlogs"
   },
   "eth_mainnet_eth_gettransactionbyhash": {
    "ok": true,
    "chain": "ethereum",
    "method": "eth_getTransactionByHash",
    "result": {
     "r": "0x4ce24c0306d81eb49173e339b90025a281ccc73f1b645c955cdcaa32dfa81ab1",
     "s": "0x26efbc9d02b4e6d659ea3823fe3ec6ea84409edcf6b21a8737b041af3ce6308b",
     "v": "0x0",
     "to": "0x0000000aa232009084bd71a5797d089aa4edfad4",
     "gas": "0x6e4cc",
     "from": "0xc917c3fa468f2c4b9c84c72caa46420eb9825249",
     "hash": "0xc43fe089e6e8de6c1bf47a65f74661323154af09655dbde2c7f728e768d864eb",
     "type": "0x2",
     "input": "0x09c5eabe000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000002950000cca0b86991c6218b36c
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arysphere-ethereum-mainnet-logs-transaction-reader-08fbbbfd/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)