SiteCheck

Name: SiteCheck
Author: bck-stack

by bck-stackversion 1.8.5i★ –iRuns in the cloud

Registry nameio.github.bck-stack/sitecheck

Install

Overview

Description from the maker (original English)

225 pay-per-call agent tools: Polymarket, chain reads, DeFi, web, SEC, KYB, geo, dev, AI. x402

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.sitecheck-api.workers.dev/mcp?ref=registry

Run this in your terminal

claude mcp add --transport http sitecheck 'https://api.sitecheck-api.workers.dev/mcp?ref=registry'

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "sitecheck": {
      "url": "https://api.sitecheck-api.workers.dev/mcp?ref=registry"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "sitecheck": {
      "type": "http",
      "url": "https://api.sitecheck-api.workers.dev/mcp?ref=registry"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.sitecheck-api.workers.dev/mcp?ref=registry

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account bck-stack, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32424 servers in this category
Published to the registry more recently than 64% of the other 32424 servers in this category
Basic checks equal to or better than 100% of the other 32424 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is SiteCheck safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.8.5) reached the registry 21 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, BankBridge

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

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BankBridge

by bankbridge-money

Works in any MCP agent, including local models. Read-only bank accounts, spending, investments.

Runs in the cloudUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

SiteCheck: pay-per-call tools for AI agents (x402 on Base, Solana and Arc)

Live: https://api.sitecheck-api.workers.dev · listed on x402scan, the official MCP Registry (io.github.bck-stack/sitecheck), Smithery and mcpservers.org · MCP: /mcp · discovery: /.well-known/x402, /openapi.json

SiteCheck is a small API that AI agents can use without an account or API key: 29 pay-per-call tools in all. Besides its AI and web tools (including a web page to Markdown reader), it sells PDF to text, translation, tech stack detection, sitemap URLs, exchange rates, e-mail, domain and Solana token and wallet data, business and compliance data (EU VAT, IBAN, LEI, US recalls, OSHA/EPA enforcement, UK insolvency notices), prediction-market data and unsigned trade transactions powered by Panta. Every call is paid per request in USDC with the x402 protocol, on Base, Solana or Arc (Circle's L1), whichever the buyer holds USDC on. Call it, get a 402 Payment Required listing the price on each network, sign the payment and get the result. It runs on Cloudflare Workers and Workers AI.

Endpoint	Price	What it does
`GET /api/audit?url=`	$0.02	Website audit: WCAG 2.2 accessibility issues with fixes and a score (European Accessibility Act), SEO basics, security headers, tech stack
`GET /api/contacts?url=`	$0.01	Company contact enrichment from a domain: emails, phones, socials, tech
`GET /api/hiring?q=&remote=`	$0.01	Searches the current Hacker News "Who is hiring?" thread
`POST /api/chat`	$0.004	Llama 3.3 70B chat completion
`POST /api/image`	$0.005	FLUX.1 schnell text-to-image
`POST /api/transcribe`	$0.01	Whisper large-v3-turbo speech-to-text
`POST /api/tts`	$0.02	Deepgram Aura-2 text-to-speech
`POST /api/embed`	$0.001	BGE-M3 embeddings (1024-d, multilingual)
`GET /api/vat?number=`	$0.002	EU VAT number check: format and checksum locally, then the official VIES service (27 EU states + Northern Ireland)
`GET /api/iban?iban=`	$0.001	IBAN validation with no network call: registry structure and length, mod-97, national check digits, bank/branch/account split; `ibans=` for up to 50
`GET /api/lei?q=`	$0.005	GLEIF lookup by LEI or company name: status, registration, parents, children, one-line `kycSummary`
`GET /api/recalls?q=&source=&since=&classification=&limit=`	$0.003	US product recalls from openFDA and CPSC in one schema, with a high/medium/low severity
`GET /api/violations?company=&state=&since=&minPenalty=&source=&limit=`	$0.005	US enforcement cases: OSHA (DOL API, needs a key on the deployment) and EPA ECHO, with official record links
`GET /api/uk-insolvency?since=&q=&postcode=&type=&limit=`	$0.003	UK company insolvency notices from The Gazette (our nightly cache of the last 8 days), optional Companies House enrichment
`GET /api/read?url=&format=&maxChars=&links=`	$0.002	One web page as clean Markdown or text for an LLM: main content only, title, description, author, date, language, canonical; robots.txt respected
`GET /api/email-check?email=`	$0.001	E-mail pre-check without SMTP: syntax, mail DNS, disposable domain, role account, free provider, typo suggestion; `emails=` for up to 50
`GET /api/domain?domain=`	$0.002	RDAP (WHOIS successor) and DNS: registered or available, registrar, created/expiry dates, status, DNSSEC, name servers, IPs, MX
`GET /api/solana/token?address=`	$0.002	Solana token check: price, market cap, liquidity, holders, 24h trading, organic score, top-holder share, on-chain mint/freeze authority and Token-2022 extensions, red flags
`GET /api/solana/trending?mode=&interval=&minLiquidityUsd=`	$0.003	Trending, new, top-traded or top-organic Solana tokens with the same fields and flags
`GET /api/solana/wallet?address=`	$0.003	Solana wallet holdings: SOL and every token with symbol, USD price and value, total in USD
`GET /api/tech?url=`	$0.003	Website technology detection (CMS, e-commerce, analytics, CDN, hosting, chat, payments, e-mail provider) with version, confidence and evidence
`POST /api/pdf`	$0.003	PDF to text by URL or base64 (up to 15 MB), page by page, with title, author and dates; text PDFs only
`GET /api/sitemap?url=&pathPrefix=&since=`	$0.002	Every URL in a site's XML sitemaps with lastmod, newest first
`GET /api/fx?from=&to=&amount=&date=`	$0.001	ECB exchange rates (latest, a past date or a time series) with amount conversion
`POST /api/translate`	$0.002	Translation with Llama 3.1 8B, up to 6,000 characters, formatting kept

Prediction markets (Panta)

Agents can buy market intelligence and ready-to-sign trade transactions per call, with no account and no API key. An agent researching an event pays a fraction of a cent to find the markets and one cent for a market's odds and a neutral brief. An agent that wants to act pays for an unsigned Panta buy transaction and signs it with its own wallet. Panta runs USDC prediction markets on Solana.

Endpoint	Price	What it does
`GET /api/markets?q=&status=&category=&limit=`	$0.002	Searches Panta's markets. Compact rows: id, question, YES/NO prices and implied probabilities, volume, close and resolution times, resolution source
`GET /api/markets/brief?id=`	$0.01	One market: current odds, recent trading activity and a short neutral AI summary of what it asks, what resolves it and what the price implies
`POST /api/markets/quote`	$0.005	Body `{ id, side: "yes"\	"no", amountUsdc, wallet }`. Panta's quote: expected shares, average price, fee, and price impact against the spot price
`POST /api/markets/build-buy`	$0.01	Same body, plus an optional `maxSlippageBps`. Returns the unsigned transaction (Solana v0, base64) and Panta's instructions for the agent to sign and broadcast itself, plus the fields for the trade report
`POST /api/markets/report`	free	After broadcasting, send `{ signature, orderId, quoteId, id, wallet }`. SiteCheck forwards it to Panta, which confirms and attributes the trade

No custody. SiteCheck never signs, holds keys or custodies funds. build-buy hands back an unsigned transaction whose only signer is the agent's wallet.
Information only, not financial advice. Every response says so (disclaimer), and the brief never recommends a trade. If the model's text reads like advice, a factual template is returned instead.
Powered by Panta. Every response carries poweredBy: { text: "Powered by Panta", url: "https://panta.market" }, as Panta's Terms of Use require.
Pay only for results, as with every tool: if Panta refuses or fails, the call returns an error and nothing is settled. The catalog is cached for 45 seconds and prices for 15 seconds, and responses say how old their data is.
The tools are on only when the PANTA_API_KEY secret is set. Otherwise they are hidden, and GET /health says why. Endpoints, shapes, attribution and open questions: docs/PANTA.md.

node scripts/demo-markets.mjs --q bitcoin            # search, brief and quote, paid on Solana (~0.017 USDC)

node scripts/demo-markets.mjs --q bitcoin --build # also builds the unsigned transaction (+0.01); never signs or sends it

Web, documents, e-mail, domain and Solana data

Tool	Source	Notes
`/api/read`	The page itself, fetched once with the `SiteCheckReader` User-Agent	`robots.txt` is respected (a disallowed page answers 403 and is not charged). No JavaScript is run, so pages that only render in the browser come back empty (422, not charged). PDFs and other binary files answer 415. The content belongs to its publisher.
`/api/email-check`	DNS over HTTPS (Cloudflare, Google) and the disposable-email-domains list (CC0)	No SMTP connection is made: `unknown` means nothing is wrong with the address or its domain, not that the mailbox exists.
`/api/domain`	The IANA RDAP bootstrap and each registry's RDAP server; DNS over HTTPS	`available` means the registry has no record; premium or reserved names can still be unavailable to buy. TLDs without RDAP are inferred from DNS.
`/api/solana/token`, `/api/solana/trending`, `/api/solana/wallet`	Jupiter token, price and holdings APIs, Solana mainnet JSON-RPC (mint account), GeckoTerminal for pools (best effort)	Information only, not financial advice. Nothing is signed or sent. On-chain mint and freeze authority win over the API's audit when both are available.
`/api/tech`	The site's home page, headers, cookies and DNS (MX, TXT); 231 own fingerprints (MIT, not derived from Wappalyzer)	No JavaScript is run; a site behind a bot challenge returns what its headers and DNS show.
`/api/pdf`	The PDF's text layer, read with unpdf (PDF.js)	No OCR: a scanned PDF answers 422 and is not charged.
`/api/sitemap`	The site's `robots.txt` and XML sitemaps	Indexes are followed up to 25 child sitemaps per call.
`/api/fx`	European Central Bank reference rates via Frankfurter	Published on working days around 16:00 CET; weekends return the last published day.
`/api/translate`	Workers AI `@cf/meta/llama-3.1-8b-instruct-fast`	Machine translation: review important texts.

Business and compliance data

Six tools for an agent that has to check a counterparty before it trades with it. All of them read free official sources (or our own cache of one), need no key from the caller, and follow the same rule as every route here: a call that fails (bad input, upstream down, timeout) returns 4xx/5xx and is not settled, so the buyer is not charged.

Tool	Source	Terms
`/api/vat`	European Commission VIES REST API	Public service of the Commission. A member state that is down gives HTTP 503 with a `viesStatus` such as `MS_UNAVAILABLE`, so an unknown answer is never reported as "invalid". Some states (e.g. DE, ES) confirm validity but do not disclose name and address: those fields are `null`.
`/api/iban`	Computed locally from the SWIFT IBAN registry structure (release 101)	No network, no bank-name or BIC lookup (no open dataset is bundled; the response says `bankLookup: false`). National check digits are applied only where a public algorithm exists (FR, ES, IT, BE, NL for ABNA/INGB/RABO, NO, FI, PL, PT, RS, ME, MK, XK, SI); other countries report `not-available`. Germany has no general national algorithm.
`/api/lei`	GLEIF Global LEI Index	CC0 public domain. No key.
`/api/recalls`	openFDA enforcement reports (food, drug, device) and the CPSC SaferProducts.gov Recall API	openFDA data is public domain under its terms of use (not for medical decisions). CPSC does not classify recalls: its severity is derived from the hazard text, FDA Class I/II/III maps to high/medium/low.

| /api/violations | US Department of Labor Data API v4 (OSHA) and EPA ECHO | US government works. OSHA needs the optional DOL_API_KEY secret: without it the route returns E

Only the beginning is shown; read the rest in the repo

SiteCheck

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

BankBridge

README from the maker

SiteCheck: pay-per-call tools for AI agents (x402 on Base, Solana and Arc)

Prediction markets (Panta)

Web, documents, e-mail, domain and Solana data

Business and compliance data