ToolVet
78trust / 100

Bazaar Listing

by Bazaar Listing Package in Onchain & crypto

x402 APIPassing, checked 2 h ago

Get YOUR x402 endpoint listed in this Bazaar - done for you, $99 one-time. You receive a deploy-ready x402 v2 kit generated for your stack (Next.js, Express, serverless; PHP via a free serverless function) with your wallet, price and discovery declaration baked in, plus a resumable listing_key that drives the automated pipeline via MCP (https://mudko.com/api/mcp): validate against Coinbase's own preflight with per-check fixes, and when your price is $1 or under WE fire the indexing settlement from our funded wallet. Ends with a receipt: settle tx + your live merchant-feed entry. Built by the team that listed its own endpoints first (this very listing is dogfood). Keepalive add-on available so you never fall out of the index.

GET
https://mudko.com/api/x402/bazaar-listing
Price
$99.00
per call in USDC
Uptime
100%
last 30 days
Response time
202 ms
272 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

GET https://mudko.com/api/x402/bazaar-listing

Each call costs $99.00 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://mudko.com/api/x402/bazaar-listing?email=buyer%40acme.com+%28string%2C+required+-+the+listing_key+is+bound+to+it%29&pay_to=0x...+%28string%2C+optional+-+your+receiving+wallet+on+Base%29&price_usd=0.50+%28number%2C+optional+-+your+price+per+call%29&resource_url=https%3A%2F%2Facme.com%2Fapi%2Fpay%2Freport+%28string%2C+optional+-+the+endpoint+to+list%3B+can+be+provided+later%29&stack=nextjs+%7C+express+%7C+serverless+%7C+php+%7C+other+%28string%2C+optional%29

Parameters

ParameterTypeRequiredDescription
emailstringYesBuyer email - the listing_key and all follow-ups are bound to it (required).
pay_tostringNoReceiving wallet (EVM address on Base) the endpoint pays to (optional here).
price_usdstringNoYour endpoint's price per call in USD (optional here).
resource_urlstringNoHTTPS URL of the endpoint to list (optional here; the MCP tools collect it if omitted).
stackstringNoYour server stack - picks the generated kit variant (optional, default other).

Example response

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

{
  "listing_key": "lk_0123456789abcdef0123456789abcdef",
  "mcp": "https://mudko.com/api/mcp",
  "next_step": "Call get_bazaar_listing_kit at https://mudko.com/api/mcp with your listing_key to receive your deployment kit.",
  "paid": true,
  "state": "paid"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $99.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://mudko.com/api/x402/bazaar-listing?email=buyer%40acme.com+%28string%2C+required+-+the+listing_key+is+bound+to+it%29&pay_to=0x...+%28string%2C+optional+-+your+receiving+wallet+on+Base%29&price_usd=0.50+%28number%2C+optional+-+your+price+per+call%29&resource_url=https%3A%2F%2Facme.com%2Fapi%2Fpay%2Freport+%28string%2C+optional+-+the+endpoint+to+list%3B+can+be+provided+later%29&stack=nextjs+%7C+express+%7C+serverless+%7C+php+%7C+other+%28string%2C+optional%29'

# 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://mudko.com/api/x402/bazaar-listing?email=buyer%40acme.com+%28string%2C+required+-+the+listing_key+is+bound+to+it%29&pay_to=0x...+%28string%2C+optional+-+your+receiving+wallet+on+Base%29&price_usd=0.50+%28number%2C+optional+-+your+price+per+call%29&resource_url=https%3A%2F%2Facme.com%2Fapi%2Fpay%2Freport+%28string%2C+optional+-+the+endpoint+to+list%3B+can+be+provided+later%29&stack=nextjs+%7C+express+%7C+serverless+%7C+php+%7C+other+%28string%2C+optional%29' \
  | 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 $99 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$99" });
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 $99 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmudko.com%2Fapi%2Fx402%2Fbazaar-listing
const res = await pay("https://mudko.com/api/x402/bazaar-listing?email=buyer%40acme.com+%28string%2C+required+-+the+listing_key+is+bound+to+it%29&pay_to=0x...+%28string%2C+optional+-+your+receiving+wallet+on+Base%29&price_usd=0.50+%28number%2C+optional+-+your+price+per+call%29&resource_url=https%3A%2F%2Facme.com%2Fapi%2Fpay%2Freport+%28string%2C+optional+-+the+endpoint+to+list%3B+can+be+provided+later%29&stack=nextjs+%7C+express+%7C+serverless+%7C+php+%7C+other+%28string%2C+optional%29");
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 $99 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$99"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://mudko.com/api/x402/bazaar-listing?email=buyer%40acme.com+%28string%2C+required+-+the+listing_key+is+bound+to+it%29&pay_to=0x...+%28string%2C+optional+-+your+receiving+wallet+on+Base%29&price_usd=0.50+%28number%2C+optional+-+your+price+per+call%29&resource_url=https%3A%2F%2Facme.com%2Fapi%2Fpay%2Freport+%28string%2C+optional+-+the+endpoint+to+list%3B+can+be+provided+later%29&stack=nextjs+%7C+express+%7C+serverless+%7C+php+%7C+other+%28string%2C+optional%29")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402202 ms$99.00
6 h agoPassed402220 ms$99.00
11 h agoPassed402197 ms$99.00
16 h agoPassed402225 ms$99.00
20 h agoPassed402211 ms$99.00
Show 10 older checks
24 h agoPassed402210 ms$99.00
28 h agoPassed402408 ms$99.00
33 h agoPassed402218 ms$99.00
37 h agoPassed402194 ms$99.00
41 h agoPassed402257 ms$99.00
45 h agoPassed402196 ms$99.00
2 days agoPassed402150 ms$99.00
2 days agoPassed402180 ms$99.00
2 days agoPassed402272 ms$99.00
3 days agoPassed402192 ms$99.00