ToolVet
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X402 Chain Reads V1 Base Eth Getblockbynumber

by Base in Onchain & crypto

x402 APIPassing, checked 2 h ago

Base on-chain read: a block by number or 'latest'. Returns Base block information for query parameter block (block number or latest) via eth_getBlockByNumber.

GET
https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
310 ms
818 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 · Watch with other listings

How to call it

GET https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber

Each call costs $0.003 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.

GET https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber?block=latest

Parameters

ParameterTypeRequiredDescription
blockstringNoa block number, or 'latest'

Example response

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

Example response, 37 lines
{
  "chain": "base",
  "method": "eth_getBlockByNumber",
  "ok": true,
  "result": {
    "baseFeePerGas": "0x4c4b40",
    "blobGasUsed": "0x49fdb0",
    "difficulty": "0x0",
    "excessBlobGas": "0x0",
    "extraData": "0x01000000640000000500000000004c4b40",
    "gasLimit": "0x17d78400",
    "gasUsed": "0x20543ad",
    "hash": "0xea00d8455c460589a746efd2ddb95112df516d68f47f41c7247249b5519397d6",
    "logsBloom": "0x5ec0c56035693ee7c0495a12f60bfbb6b73dd4f1a02ea3711ae4529f3852ed90b33e8b48b46627a63646c0dfe0ceff9d4a3bbec7dd25e362afc19ee3edb7b708a641fed8847ba50edb87d43dd2a852b4d9430c075a6d1af815d3a39cdf7eff42bae2a0aadaab0cee3f66c9750d872e88c123401219742e",
    "miner": "0x4200000000000000000000000000000000000011",
    "mixHash": "0x1107a40b1f89981b57fd6f8e24717d0e76cf87525d041987514d3c139405a90f",
    "nonce": "0x0000000000000000",
    "number": "0x3245954",
    "parentBeaconBlockRoot": "0x62515d9866021870f7635c4a8e0ac37fb94e5ac70133aa8a0946a19ba7349239",
    "parentHash": "0x1fd770bbc4aa41d486f43084897347279410637eb3233f2afa7c6eb4994c0655",
    "receiptsRoot": "0xdd340ae2e87543370b59c54eb67043fd0108ed319fef18f5357fee05a3d2e12d",
    "requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
    "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "size": "0x14e2f",
    "stateRoot": "0xe0df8779fdd9e7b3b0ebb0bf73314f53a093f0812eabfd8420d6537c9b5de8b4",
    "timestamp": "0x6ad30f8b",
    "transactions": [
      "0xd0050c0481165f1b64e8be794aa79b503ba7718d10087982ccf6283477d54d66",
      "0x30a89c4cf89346243822f98da080791feaf5b2b3e1128e530018a6060071ca53"
    ],
    "transactionsRoot": "0xf59afdfe8e069e8e60a09c3069da7017829938e90e6cf8bf785bf33b9248fee5",
    "uncles": [],
    "withdrawals": [],
    "withdrawalsRoot": "0xbb0b3c9c1132167b3257e9f50c915d664fce551810ebb0fbfa883441b76ed426"
  },
  "service": "x402_chain_reads_v1.base_eth_getblockbynumber"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber?block=latest'

# 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 - 'https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber?block=latest' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.arysphere.com%2Fv1%2Fventures%2Fx402_chain_reads_v1%2Fbase_eth_getblockbynumber
const res = await pay("https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber?block=latest");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_eth_getblockbynumber?block=latest")
    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 agoPassed402304 ms$0.003
7 h agoPassed402818 ms$0.003
12 h agoPassed402310 ms$0.003