MCP Tool · x402 · early usage

Get YOUR x402 endpoint listed in this Bazaar - done for you, $99 one-time

by mudko.com · discovered, not yet claimed by its owner · updated 2026-09-16

30d calls1

30d payers1

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

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.

Tags: x402 · bazaar-listing · agent-payments · listing-service · done-for-you · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-09-16

Input example from Bazaar metadata

{
  "email": "[email protected] (string, required - the listing_key is bound to it)",
  "pay_to": "0x... (string, optional - your receiving wallet on Base)",
  "price_usd": "0.50 (number, optional - your price per call)",
  "resource_url": "https://acme.com/api/pay/report (string, optional - the endpoint to list; can be provided later)",
  "stack": "nextjs | express | serverless | php | other (string, optional)"
}

Output example

{
  "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"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/30644.json for the price and payment options.
Pay. Call GET https://mudko.com/api/x402/bazaar-listing. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $99 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$99	0x53598173ce7c26025bab0520d9e9d0c28fbcf7de	120s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "99000000",
    "amountUsd": 99,
    "maxTimeoutSeconds": 120
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "listing_key": {
          "type": "string"
        },
        "mcp": {
          "type": "string"
        },
        "next_step": {
          "type": "string"
        },
        "state": {
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "listing_key": "string",
    "mcp": "string",
    "next_step": "string",
    "state": "string"
  },
  "type": "string"
}

Examples

curl

curl "https://mudko.com/api/x402/bazaar-listing"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://mudko.com/api/x402/bazaar-listing");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://mudko.com/api/x402/bazaar-listing")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: mudko.com
Endpoint: https://mudko.com/api/x402/bazaar-listing
Machine-readable: /resources/30644.json