ToolVet
80trust / 100

Base Events

by base-events in Onchain & crypto

x402 APIPassing, checked 2 h ago

Smart contract event logs on Base mainnet (Base contract events) via eth_getLogs - filter by contract address and up to 4 topics, up to 2,000 blocks, raw logs with topics, data, block and tx hash.

POST
https://x402.agentindex.world/base/events
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
214 ms
391 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

POST https://x402.agentindex.world/base/events

Each call costs $0.005 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://x402.agentindex.world/base/events
content-type: application/json

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "from_block": 52118214,
  "to_block": 52118214,
  "topics": [
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
  ]
}

Parameters

ParameterTypeRequiredDescription
addressstring or nullNo Default: null.
from_blockintegerYes
to_blockintegerYes
topicsarray of string or nullNo

Example response

The provider's example. We can't check it without paying.

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "from_block": 52118214,
  "logs": [
    {
      "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "block_number": 52118214,
      "data": "0x00000000000000000000000000000000000000000000000000000000000003e8",
      "log_index": 234,
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x0000000000000000000000003cedc3cba49c3809ee46b9bf60da75d6607b45ec",
        "0x000000000000000000000000b3f32bdfe8d07825bc0d7387295ab1d7559ba69d"
      ],
      "transaction_hash": "0xc2490a8a0aedd1196617a0e52111f82d6059986db7f1713ab23221c91c42f5c4"
    }
  ],
  "to_block": 52118214,
  "topics": [
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://x402.agentindex.world/base/events' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","from_block":52118214,"to_block":52118214,"topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://x402.agentindex.world/base/events' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","from_block":52118214,"to_block":52118214,"topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.agentindex.world%2Fbase%2Fevents&method=POST
const res = await pay("https://x402.agentindex.world/base/events", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "from_block": 52118214,
    "to_block": 52118214,
    "topics": [
      "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://x402.agentindex.world/base/events",
        json={
            "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "from_block": 52118214,
            "to_block": 52118214,
            "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402171 ms$0.005
6 h agoPassed402184 ms$0.005
11 h agoPassed402222 ms$0.005
15 h agoPassed402222 ms$0.005
19 h agoPassed402220 ms$0.005
Show 10 older checks
23 h agoPassed402391 ms$0.005
27 h agoPassed402216 ms$0.005
31 h agoPassed402287 ms$0.005
35 h agoPassed402264 ms$0.005
39 h agoPassed402137 ms$0.005
43 h agoPassed402269 ms$0.005
47 h agoPassed402140 ms$0.005
2 days agoPassed402133 ms$0.005
2 days agoPassed40247 ms$0.005
2 days agoPassed40279 ms$0.005