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Free tools from Siftwright

Small, honest utilities for developers, site owners and security teams. Each one runs on the same infrastructure as our paid API, so when you need it at scale, there's an endpoint for it.

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x402 payment endpoint checker

Paste a pay-per-call URL: decode its 402 Payment Required response, see the price in USDC, network, payTo, resource description, discovery metadata and browser CORS. Never signs or pays.

Check an endpoint →
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MCP server checker

Paste a remote MCP URL: protocol version, stateless or session mode, CORS, auth challenge, tool description quality and the token cost of the tool list.

Check a server →
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Website to PDF converter

Turn any public web page into a full-page PDF in A4, Letter, Legal or A3, rendered in a real browser. No watermark.

Convert to PDF →
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Company job board finder

Type a company and see its open jobs from Greenhouse, Lever, Ashby, SmartRecruiters or Recruitee, by department and location, with a CSV download.

Find open jobs →
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App Store review analyzer

Star distribution, the words 1 and 2 star reviewers use most, rating by app version and a CSV of the latest 150 reviews of any iPhone app.

Analyze an app →
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Email address checker

Syntax, MX records, disposable domains, role addresses and typo suggestions for any email address. Nothing is sent.

Check an email →
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Google News search & RSS builder

Search Google News by keyword, time range and country edition, then copy the RSS feed URL or download the results as CSV.

Search the news →
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Website tech stack checker

What is any website built with? CMS, frameworks, analytics, hosting, email and DNS provider, each with the evidence behind it.

Check a website →
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Website contact finder

Find the public emails, phone numbers and social profiles on any company website. Copy or download as CSV.

Find contacts →
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YouTube transcript generator

Full transcript of any YouTube video or Short. Copy it, show timestamps, or download TXT, SRT or VTT.

Get a transcript →
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Website screenshot tool

Real-browser screenshot of any public page at desktop, tablet or phone width. Full page or viewport, PNG or JPEG.

Take a screenshot →
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Domain WHOIS & DNS lookup

Registrar, creation and expiry dates, domain age, nameservers, DNSSEC, MX, plus an SPF and DMARC health check for any domain, straight from RDAP.

Look up a domain →
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robots.txt generator for AI bots

Pick which AI crawlers to allow or block, add an optional Content-Signal line, copy or download robots.txt. Runs in your browser.

Generate →
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AI crawler checker

Which AI crawlers does your robots.txt allow? GPTBot, ClaudeBot, PerplexityBot and 21 more, plus Content-Signal and llms.txt checks.

Check a domain →
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Post-quantum TLS checker

Does a domain support X25519MLKEM768 key exchange? Plus group preference, certificate and HSTS, with a migration checklist.

Check a domain →
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Web data demo

Try the YouTube transcript, screenshot and Google News tools without an account.

Open the demo →

Start with one key. Pay only for what works.

Plans from $29/month with 10,000 successful results. Failed requests never count. Cancel anytime from the billing portal.

Get an API keyTry the live demo