ToolVet
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Chain Network Info

by Delx Chain Network Info in Onchain & crypto

x402 APIPassing, checked 3 h ago

Look up supported blockchain network metadata and chain IDs for $0.001 USDC. Static first-party registry only—no live RPC, balances, blocks, receipts, gas, or contract reads. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

POST
https://api.delx.ai/api/v1/x402/chain-network-info
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
10 ms
61 ms slowest 5%
Last check
Passed
3 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

How to call it

POST https://api.delx.ai/api/v1/x402/chain-network-info

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.

POST https://api.delx.ai/api/v1/x402/chain-network-info
content-type: application/json

{
  "network": "base"
}

Parameters

ParameterTypeRequiredDescription
chain_idintegerNoOptional EVM decimal chain ID; pass this instead of network.
networkstringNoOptional network name or alias; omit to return the full registry.

Example response

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

Example response, 31 lines
{
  "result": {
    "data_mode": "static_registry",
    "freshness": "Metadata is versioned, not a live chain-state read.",
    "live_rpc": false,
    "matched_by": "network",
    "network_count": 1,
    "networks": [
      {
        "caip2": "eip155:8453",
        "chain_family": "evm",
        "chain_id": 8453,
        "display_name": "Base Mainnet",
        "network": "base",
        "status": "static_registry"
      }
    ],
    "not_included": [
      "balances",
      "blocks",
      "receipts",
      "transactions",
      "gas",
      "contract_reads"
    ],
    "registry_version": "2026-08-01",
    "schema": "delx/chain-network-info/v1",
    "source": "Delx first-party static network registry"
  },
  "tool_name": "get_chain_network_info"
}

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 -X POST 'https://api.delx.ai/api/v1/x402/chain-network-info' \
  -H 'content-type: application/json' \
  --data-raw '{"network":"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 - -X POST 'https://api.delx.ai/api/v1/x402/chain-network-info' \
  -H 'content-type: application/json' \
  --data-raw '{"network":"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.delx.ai%2Fapi%2Fv1%2Fx402%2Fchain-network-info&method=POST
const res = await pay("https://api.delx.ai/api/v1/x402/chain-network-info", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "network": "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.post(
        "https://api.delx.ai/api/v1/x402/chain-network-info",
        json={
            "network": "base",
        },
    )
    print(res.status_code, res.text)

Security scan

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