ToolVet
77trust / 100

Crypto Contract Abi

by ISHOB in Onchain & crypto

x402 APIPassing, checked 4 h ago

Verified smart-contract ABI (+ optional Solidity/Vyper source) for Ethereum, Base, Arbitrum, Optimism, Polygon and BNB Chain from the open Sourcify registry: compiler, deployment, read/write function and event signatures, and proxy resolution to the implementation ABI. Unverified contracts return 404 (not charged).

GET
https://api.ishob.com/v1/crypto/contract-abi
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
700 ms
1.1 s 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

GET https://api.ishob.com/v1/crypto/contract-abi

Each call costs $0.001 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.ishob.com/v1/crypto/contract-abi?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&chain=base

Parameters

ParameterTypeRequiredDescription
addressstringYesContract address
chainstringYesEVM chain One of: ethereum, base, arbitrum, optimism, polygon, bsc.
include_sourcebooleanNoInclude verified source files (up to 600k characters) Default: false.
resolve_proxybooleanNoAlso return the implementation ABI of a proxy Default: true.

Example response

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

Example response, 34 lines
{
  "abi": [
    "..."
  ],
  "chain": "base",
  "compiler": "0.6.12+commit.27d51765",
  "name": "FiatTokenProxy",
  "proxy": {
    "implementations": [
      {
        "abi": [
          "..."
        ],
        "address": "0x2Ce6...",
        "name": "FiatTokenV2_2"
      }
    ],
    "is_proxy": true,
    "type": "ZeppelinOSProxy"
  },
  "summary": {
    "events": [
      "Upgraded(address)"
    ],
    "read": [
      "admin()",
      "implementation()"
    ],
    "write": [
      "upgradeTo(address)"
    ]
  },
  "verified": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.ishob.com/v1/crypto/contract-abi?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&chain=base'

# 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.ishob.com/v1/crypto/contract-abi?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&chain=base' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.ishob.com%2Fv1%2Fcrypto%2Fcontract-abi
const res = await pay("https://api.ishob.com/v1/crypto/contract-abi?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&chain=base");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
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.ishob.com/v1/crypto/contract-abi?address=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&chain=base")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

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4 h agoPassed402609 ms$0.001
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21 h agoPassed402700 ms$0.001
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42 h agoPassed402685 ms$0.001
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2 days agoPassed402181 ms$0.001