AI Inference · x402 · early usage

Read any public web page or PDF and get its main content as clean, LLM-ready markdown (…

Read any public web page or PDF and get its main content as clean, LLM-ready markdown (headings, lists, links, tables, code) plus metadata: title, description, author, date, language, canonical URL. Menus, cookie banners and footers removed. Optional list of…

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

30d calls3

30d payers3

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: web · markdown · scraping · reader · llm-ready · bazaar

Call contract

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

Input example from Bazaar metadata

{
  "max_caracteres": 1200,
  "url": "https://docs.x402.org/introduction"
}

Output example

{
  "avisos": [
    "Contenido recortado a 1200 caracteres (de 3590). Sube max_caracteres si necesitas más."
  ],
  "caracteres": 1200,
  "markdown": "Welcome\n\n# Welcome to x402\n\nThis guide will help you understand x402, the open payment standard, and help you get started building or integrating services with x402.\n\nx402 is the open payment standard that enables services to charge for access to their APIs and content directly over HTTP. It is built around the HTTP `402 Payment Required` status code and allows clients to programmatically pay for resources without accounts, sessions, or credential management.\nWith x402, any web service can require payment before serving a response, using crypto-native payments for speed, privacy, and efficiency.\n**Want to contribute to our docs?** [The documentation source in this repository is open to PRs.](https://github.com/x402-foundation/x402) Our only ask is that you keep these docs as a neutral resource, with no branded content other than linking out to other resources where appropriate.\n**Note about the docs:** These docs are the credibly neutral source of truth for x402, as x402 is a completely open standard under the Apache-2.0 license.\n\n###  Why Use x402?\n\nx402 offers:\n\n- **No fees and minimal friction** x402 as a standard has 0 fees built in.\n\n- **Native support for machine-to-machine ",
  "metadatos": {
    "canonica": "https://docs.x402.org/introduction",
    "descripcion": "This guide will help you understand x402, the open payment standard, and help you get started building or integrating services with x402.",
    "idioma": "en",
    "imagen": "https://coinbase-5dac824f.mintlify.app/mintlify-assets/_next/image?url=%2F_mintlify%2Fapi%2Fog%3Fdivision%3DWelcome%26title%3DWelcome%2Bto%2Bx402%26description%3DThis%2Bguide%2Bwill%2Bhelp%2Byou%2Bunderstand%2Bx402%252C%2Bthe%2Bopen%2Bpayment%2Bstandard%252C%2Band%2Bhelp%2Byou%2Bget%2Bstarted%2Bbuilding%2Bor%2Bintegrating%2Bservices%2Bwith%2Bx402.%26theme%3D7f62360b0321f9ed397b7eff&w=1200&q=100",
    "sitio": "x402",
    "titulo": "Welcome to x402 - x402"
  },
  "palabras": 188,
  "recortado": true,
  "tipo": "html",
  "url": "https://docs.x402.org/introduction",
  "url_final": "https://docs.x402.org/introduction"
}

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/37195.json for the price and payment options.
Pay. Call GET https://api.vextorium.com/web-markdown-pago. 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, Polygon, Optimism, eip155:5042, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.0045 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana, Polygon, Optimism, eip155:5042
Demand: 3 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.0045	0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.0045	HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2	300s
exact	Polygon eip155:137	USDC	$0.0045	0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf	300s
exact	Optimism eip155:10	0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85	4500	0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf	604900s
exact	eip155:5042 eip155:5042	0x3600000000000000000000000000000000000000	4500	0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf	604900s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "4500",
    "amountUsd": 0.0045,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "4500",
    "amountUsd": 0.0045,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "4500",
    "amountUsd": 0.0045,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "4500",
    "maxTimeoutSeconds": 604900
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "4500",
    "maxTimeoutSeconds": 604900
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "avisos": {
          "items": {
            "type": [
              "null",
              "string"
            ]
          },
          "type": [
            "array",
            "null"
          ]
        },
        "caracteres": {
          "type": [
            "number",
            "null"
          ]
        },
        "markdown": {
          "type": [
            "string",
            "null"
          ]
        },
        "metadatos": {
          "properties": {
            "canonica": {
              "type": [
                "string",
                "null"
              ]
            },
            "descripcion": {
              "type": [
                "string",
                "null"
              ]
            },
            "idioma": {
              "type": [
                "string",
                "null"
              ]
            },
            "imagen": {
              "type": [
                "string",
                "null"
              ]
            },
            "sitio": {
              "type": [
                "string",
                "null"
              ]
            },
            "titulo": {
              "type": [
                "string",
                "null"
              ]
            }
          },
          "type": [
            "object",
            "null"
          ]
        },
        "palabras": {
          "type": [
            "number",
            "null"
          ]
        },
        "recortado": {
          "type": [
            "boolean",
            "null"
          ]
        },
        "tipo": {
          "type": [
            "string",
            "null"
          ]
        },
        "url": {
          "type": [
            "string",
            "null"
          ]
        },
        "url_final": {
          "type": [
            "string",
            "null"
          ]
        }
      },
      "type": [
        "object",
        "null"
      ]
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "avisos": [
      "value"
    ],
    "caracteres": 0,
    "markdown": "string",
    "metadatos": {
      "canonica": "string",
      "descripcion": "string",
      "idioma": "string",
      "imagen": "string",
      "sitio": "string",
      "titulo": "string"
    },
    "palabras": 0,
    "recortado": true,
    "tipo": "string",
    "url": "string",
    "url_final": "string"
  },
  "type": "string"
}

Examples

curl

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

JavaScript

const res = await fetch("https://api.vextorium.com/web-markdown-pago");
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://api.vextorium.com/web-markdown-pago")
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: api.vextorium.com
Endpoint: https://api.vextorium.com/web-markdown-pago
Machine-readable: /resources/37195.json