Beauty & Personal Care · x402 · early usage

Page speed and page weight audit of a web page from one real browser load: total bytes…

Page speed and page weight audit of a web page from one real browser load: total bytes transferred, HTTP request count and DOM node count, measured rather than estimated, with findings when the page is heavy. Page-weight signals, not Core Web Vitals.

by hubvibe-io.com · discovered, not yet claimed by its owner · updated 2026-10-06

30d calls4

30d payers2

MethodPOST

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

Tags: accessibility · wcag · seo · security · performance · bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-06

Input example from Bazaar metadata

{
  "url": "https://example.com"
}

Output example

{
  "disclosure": "Single-page-load measurement, not a full Lighthouse-style audit.",
  "findings": [
    {
      "detail": "2097 DOM nodes (recommended <= 1500)",
      "id": "high-dom-complexity",
      "severity": "moderate"
    },
    {
      "detail": "3.4 MB transferred (recommended <= 3 MB)",
      "id": "heavy-page-weight",
      "severity": "moderate"
    },
    {
      "detail": "118 network requests (recommended <= 100)",
      "id": "high-request-count",
      "severity": "minor"
    }
  ],
  "metrics": {
    "dom_node_count": 2097,
    "request_count": 118,
    "total_bytes_transferred": 3412000,
    "unmeasured_responses": 0
  },
  "pass": false,
  "status": "ok"
}

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/32900.json for the price and payment options.
Pay. Call GET https://hubvibe-io.com/audit/performance. 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, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.05 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana
Demand: 4 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.05	0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.05	J1K4mdbvXEbJLRKpgxFcA7s66LWMCYHu71ye6Hz2icSh	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x837C40E2B4e976f43Ffb4451eE281A00fA9477dd",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "amountUsd": 0.05,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "J1K4mdbvXEbJLRKpgxFcA7s66LWMCYHu71ye6Hz2icSh",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "50000",
    "amountUsd": 0.05,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "findings": {
          "description": "One entry per rule that did not pass. Empty when the check is clean.",
          "items": {
            "properties": {
              "detail": {
                "description": "What failed and where.",
                "type": "string"
              },
              "id": {
                "description": "Stable rule identifier.",
                "type": "string"
              },
              "severity": {
                "description": "Rule severity.",
                "type": "string"
              }
            },
            "required": [
              "id"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "metrics": {
          "properties": {
            "dom_node_count": {
              "minimum": 0,
              "type": "integer"
            },
            "request_count": {
              "minimum": 0,
              "type": "integer"
            },
            "total_bytes_transferred": {
              "minimum": 0,
              "type": "integer"
            }
          },
          "type": "object"
        },
        "pass": {
          "description": "Whether every rule in this dimension passed.",
          "type": "boolean"
        },
        "status": {
          "const": "ok",
          "description": "Present only on a completed audit.",
          "type": "string"
        }
      },
      "required": [
        "pass"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "findings": [
      {
        "detail": "string",
        "id": "string",
        "severity": "string"
      }
    ],
    "metrics": {
      "dom_node_count": 0,
      "request_count": 0,
      "total_bytes_transferred": 0
    },
    "pass": true,
    "status": "string"
  },
  "type": "string"
}

Examples

curl

curl -X POST 'https://hubvibe-io.com/audit/performance' -H 'Content-Type: application/json' --data '{"url":"https://example.com"}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://hubvibe-io.com/audit/performance", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"url\":\"https://example.com\"}"
});
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
import json
res = httpx.request("POST", "https://hubvibe-io.com/audit/performance", json=json.loads("{\"url\":\"https://example.com\"}"))
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: hubvibe-io.com
Endpoint: https://hubvibe-io.com/audit/performance
Machine-readable: /resources/32900.json