ToolVet
80trust / 100

Chain Call

by Tanod chainpeek in Onchain & crypto

x402 APIPassing, checked 2 h ago

chainpeek (Tanod) read-only contract call (eth_call) on Ethereum or Base: raw hex calldata in, raw hex result out. Use when an agent must read a contract function's return value without sending a transaction.

POST https://tanod.dev/v1/chain/call

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
296 ms typical, 798 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# bash or zsh: see the payment challenge (nothing is charged)
curl -g -i -X POST 'https://tanod.dev/v1/chain/call' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":"base","data":"0x18160ddd","to":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Fchain%2Fcall
const res = await pay("https://tanod.dev/v1/chain/call", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: "{\"chain\":\"base\",\"data\":\"0x18160ddd\",\"to\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}",
});
console.log(await res.json());

Example input

{
  "chain": "base",
  "data": "0x18160ddd",
  "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}

Example output

{
  "block": "latest",
  "chain": "base",
  "is_empty": false,
  "note": "result is raw ABI-encoded return data; an empty result from an address without code is normal",
  "result": "0x000000000000000000000000000000000000000000000000000f914dad280809",
  "result_bytes": 32,
  "selector": "0x18160ddd",
  "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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