ToolVet
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Dex Volume

by DEX Trading Volume in Onchain & crypto

x402 APIPassing, checked 1 h ago

Decentralised exchange (DEX) trading volume: total 24h and 7d USD volume with 1d/7d change, plus the top DEXs by 24h volume. Optional `chain` filter scopes the totals and ranking to one chain.

POST
https://crypto.openverbs.com/v1/dex-volume
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
581 ms
694 ms slowest 5%
Last check
Passed
1 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://crypto.openverbs.com/v1/dex-volume

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.

POST https://crypto.openverbs.com/v1/dex-volume
content-type: application/json

{
  "chain": "example",
  "limit": 1
}

Parameters

ParameterTypeRequiredDescription
chainstringNoFilter to one chain, e.g. "Ethereum", "Solana", "Base".
limitintegerNoHow many DEXs to return, ranked by 24h volume (default 10).

Example response

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

{
  "chain": null,
  "change1dPct": 18.76,
  "change7dPct": 24.02,
  "count": 815,
  "dexs": [
    {
      "category": "Dexs",
      "chains": [
        "Ethereum",
        "Base"
      ],
      "change1dPct": -8.33,
      "name": "Uniswap V4",
      "volume24hUsd": 1423000760,
      "volume7dUsd": 10791531695
    }
  ],
  "source": "defillama",
  "stale": false,
  "total24hUsd": 9607081107.33,
  "total7dUsd": 66773074286.62
}

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://crypto.openverbs.com/v1/dex-volume' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":"example","limit":1}'

# 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://crypto.openverbs.com/v1/dex-volume' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":"example","limit":1}' \
  | 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%2Fcrypto.openverbs.com%2Fv1%2Fdex-volume&method=POST
const res = await pay("https://crypto.openverbs.com/v1/dex-volume", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "chain": "example",
    "limit": 1
  }),
});
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://crypto.openverbs.com/v1/dex-volume",
        json={
            "chain": "example",
            "limit": 1,
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402558 ms$0.003
6 h agoPassed402586 ms$0.003
11 h agoPassed402603 ms$0.003
15 h agoPassed402580 ms$0.003
19 h agoPassed402614 ms$0.003
Show 10 older checks
23 h agoPassed402574 ms$0.003
28 h agoPassed402604 ms$0.003
32 h agoPassed402542 ms$0.003
36 h agoPassed402557 ms$0.003
41 h agoPassed402694 ms$0.003
45 h agoPassed402629 ms$0.003
2 days agoPassed402621 ms$0.003
2 days agoPassed402567 ms$0.003
2 days agoPassed402581 ms$0.003
3 days agoPassed402565 ms$0.003