ToolVet
75trust / 100

Base

by BlockRun.AI in Onchain & crypto

x402 APIPassing, checked 4 h ago

Multi-chain JSON-RPC passthrough fronted by BlockRun, powered by Tatum's gateway across 40 chains (Ethereum, Base, Solana, Polygon, BSC, Arbitrum, Optimism, Avalanche, Bitcoin, Sui, and more). One endpoint, every chain, pay-per-call in USDC, no API key. $0.002 per call (or per element of a JSON-RPC batch). Network: Base.

POST
https://blockrun.ai/api/v1/rpc/base
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
330 ms
520 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://blockrun.ai/api/v1/rpc/base

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

Built from the input schema. Replace the values with your own.

POST https://blockrun.ai/api/v1/rpc/base
content-type: application/json

{
  "id": "example",
  "jsonrpc": "example",
  "method": "example"
}

Parameters

ParameterTypeRequiredDescription
idstring or numberYesJSON-RPC id
jsonrpcstringYes"2.0"
methodstringYesChain RPC method, e.g. eth_blockNumber, eth_call, eth_getBalance (EVM) or getSlot, getAccountInfo (Solana).
paramsarrayNoMethod-specific params.

Example response

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

{
  "id": "",
  "jsonrpc": "",
  "result": {}
}

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 -X POST 'https://blockrun.ai/api/v1/rpc/base' \
  -H 'content-type: application/json' \
  --data-raw '{"id":"example","jsonrpc":"example","method":"example"}'

# 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://blockrun.ai/api/v1/rpc/base' \
  -H 'content-type: application/json' \
  --data-raw '{"id":"example","jsonrpc":"example","method":"example"}' \
  | 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%2Fblockrun.ai%2Fapi%2Fv1%2Frpc%2Fbase&method=POST
const res = await pay("https://blockrun.ai/api/v1/rpc/base", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "id": "example",
    "jsonrpc": "example",
    "method": "example"
  }),
});
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.post(
        "https://blockrun.ai/api/v1/rpc/base",
        json={
            "id": "example",
            "jsonrpc": "example",
            "method": "example",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402276 ms$0.003
9 h agoPassed402374 ms$0.003
14 h agoPassed402342 ms$0.003
18 h agoPassed402296 ms$0.003
23 h agoPassed402284 ms$0.003
Show 10 older checks
27 h agoPassed402305 ms$0.003
32 h agoPassed402330 ms$0.003
36 h agoPassed402366 ms$0.003
40 h agoPassed402286 ms$0.003
44 h agoPassed402346 ms$0.003
2 days agoPassed402280 ms$0.003
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3 days agoPassed402415 ms$0.003