ToolVet
74trust / 100

Web Markdown

by Blackwood State Web Markdown in Search & web

x402 APIPassing, checked 1 h ago

Use when you need to scrape a web page, extract content from a url or read an article as markdown for an LLM. Do not use for pages that need JavaScript to render, sit behind a login or paywall, or are not HTML (PDFs go to blackwood_pdf_extract). Returns JSON with the clean Markdown of a public web page plus its title, description, language, canonical URL and links for 0.01 USDC per call. Typical response time 2500 ms (p95). Category: Data.

POST
https://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
1.4 s
1.9 s 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://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown

Each call costs $0.01 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://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown
content-type: application/json

{
  "maxChars": 500,
  "url": "https://httpbin.org/html"
}

Parameters

ParameterTypeRequiredDescription
maxCharsintegerNoMaximum length of the returned markdown (500-100000 characters, 50000 when omitted)
urlstring (uri)YesPublic http(s) URL of the web page to read, e.g. https://example.com/article

Example response

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

{
  "canonical": null,
  "description": null,
  "finalUrl": "https://httpbin.org/html",
  "lang": null,
  "links": [],
  "markdown": "# Herman Melville - Moby-Dick\n\nAvailing himself of the mild, summer-cool weather that now reigned in these latitudes, and in preparation for the peculiarly active pursuits shortly to be anticipated, Perth, the begrimed, blistered old blacksmith, had not removed his portable forge to the hold again, after concluding his contributory work for Ahab's leg, but still retained it on deck, fast lashed to ringbolts by the foremast; being now almost incessantly invoked by the headsmen, and harpooneers, a",
  "status": 200,
  "title": null,
  "truncated": true,
  "url": "https://httpbin.org/html",
  "wordCount": 78
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown' \
  -H 'content-type: application/json' \
  --data-raw '{"maxChars":500,"url":"https://httpbin.org/html"}'

# 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://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown' \
  -H 'content-type: application/json' \
  --data-raw '{"maxChars":500,"url":"https://httpbin.org/html"}' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402-gateway.blackwoodstate8.workers.dev%2Fv1%2Fweb-markdown&method=POST
const res = await pay("https://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "maxChars": 500,
    "url": "https://httpbin.org/html"
  }),
});
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://x402-gateway.blackwoodstate8.workers.dev/v1/web-markdown",
        json={
            "maxChars": 500,
            "url": "https://httpbin.org/html",
        },
    )
    print(res.status_code, res.text)

Security scan

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