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Developer API & MCP server

Use 43 of our tools from your own code or let an AI assistant use them for you. DNS, SSL, redirects, SEO tags, broken links, hashing, encoding and more, over plain HTTPS.

Get your free API key Read the quickstart

43Endpoints

200Welcome credits

100Free credits / month

1Credit per call, from

REST API

Send a JSON POST to /api/v1/<tool> from any language, script or no-code app.

MCP server

Give Claude, Cursor or VS Code all 43 tools with one URL. No installs, no keys.

Live playground

Every endpoint below has a Try it box. Edit the JSON, send it and see the real response.

Quickstart

Your first call in 30 seconds

Every endpoint takes a JSON body and returns JSON. Your remaining balance comes back with every call.

Sign in with Google. You get 200 free credits.
Open API keys and create a key. Copy it, it is shown only once.
Send it as Authorization: Bearer … and read data when ok is true.

curl -X POST https://api.apextoolstation.com/api/v1/dns-lookup \
  -H "Authorization: Bearer ats_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domain":"example.com","type":"MX"}'

const res = await fetch("https://api.apextoolstation.com/api/v1/dns-lookup", {
  method: "POST",
  headers: {
    "Authorization": "Bearer ats_live_YOUR_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ domain: "example.com", type: "MX" }),
});
const { ok, data, error } = await res.json();
console.log(ok ? data : error.message);

import requests

r = requests.post(
    "https://api.apextoolstation.com/api/v1/dns-lookup",
    headers={"Authorization": "Bearer ats_live_YOUR_KEY"},
    json={"domain": "example.com", "type": "MX"},
    timeout=30,
)
body = r.json()
print(body["data"] if body["ok"] else body["error"]["message"])

Success

{
  "ok": true,
  "tool": "dns-lookup",
  "ms": 142,
  "credits": { "charged": 1, "remaining": 299 },
  "data": { "domain": "example.com", "results": { "MX": [ ... ] } }
}

Error

{
  "ok": false,
  "tool": "dns-lookup",
  "error": { "code": "bad_request", "message": "Please enter a valid domain name, like example.com." }
}

Reference

All endpoints

Base URL https://api.apextoolstation.com. Click an endpoint for its fields and a live playground. The playground uses your signed-in account, so you do not need to paste a key.

All endpoints

Rate limits: Network tools: 30 requests/minute per IP · Instant tools: 120/minute · HTTP 429 returns Retry-After.

POST/api/v1/dns-lookupDNS Lookup1 creditNetwork

Look up DNS records (A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, DS, DNSKEY) for a domain, or the PTR record for an IP address. Uses public DNS-over-HTTPS resolvers.

Input

Field	Type	Description
`domain` required	string	Domain name (example.com) or IP address for a reverse lookup.
`type`	string ALL · A · AAAA · CNAME · MX · NS · TXT · SOA · CAA · SRV · DS · DNSKEY · PTR	Record type, or ALL for the common set. Default: ALL

Try it

POST/api/v1/ssl-checkSSL Certificate Check2 creditsNetwork

Check whether a website’s HTTPS certificate is trusted and when it expires, with issuer and covered domain names.

Input

Field	Type	Description
`host` required	string	Website or hostname, e.g. example.com.

Try it

POST/api/v1/email-authSPF, DKIM & DMARC Check2 creditsNetwork

Read a domain’s MX, SPF, DMARC and DKIM records (trying common selectors), plus MTA-STS and BIMI, to diagnose email deliverability.

Input

Field	Type	Description
`domain` required	string	Domain or email address.
`selector`	string	Optional DKIM selector to check instead of the common list.

Try it

POST/api/v1/ip-lookupIP Address Lookup1 creditNetwork

Look up an IP address: country, region, city, coordinates, timezone, ISP and ASN. Uses ipwho.is (free, no key); results are cached for one hour.

Input

Field	Type	Description
`ip` required	string	IPv4 or IPv6 address, e.g. 8.8.8.8.

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POST/api/v1/reverse-ipReverse IP Lookup1 creditNetwork

Find the hostname behind an IP address (reverse DNS / PTR record). Returns null when the IP has no reverse DNS entry.

Input

Field	Type	Description
`ip` required	string	IPv4 or IPv6 address, e.g. 8.8.8.8.

Try it

POST/api/v1/pingPing & Latency Check2 creditsNetwork

Measure how fast a host answers: three HTTP HEAD attempts with min/avg/max latency and packet loss. Cloudflare Workers cannot send ICMP ping, so this measures HTTP latency — it is labelled honestly as such.

Input

Field	Type	Description
`host` required	string	Domain or IP address, e.g. example.com.

Try it

POST/api/v1/smtp-testSMTP Server Test3 creditsNetwork

Test a domain’s mail server: resolves its MX records, connects to the top MX host on port 587 (STARTTLS) or 465 (implicit TLS), reads the greeting and lists its capabilities (STARTTLS, AUTH, SIZE). Never sends credentials or a message. Port 25 is blocked by the Workers runtime.

Input

Field	Type	Description
`host` required	string	Domain to test, e.g. gmail.com.
`port`	integer 587 · 465	587 (STARTTLS) or 465 (implicit TLS). Port 25 is blocked by the runtime. Default: 587

Try it

POST/api/v1/redirect-chainRedirect Chain Tracer2 creditsNetwork

Follow a URL’s redirects hop by hop (up to 12) and return each status code, location and timing. Detects loops.

Input

Field	Type	Description
`url` required	string	URL to trace, e.g. http://example.com.

Try it

POST/api/v1/http-headersHTTP Headers & Security Grade2 creditsNetwork

Fetch a URL and return its response headers, status, response time and a security-header grade (HSTS, CSP, X-Frame-Options and more).

Input

Field	Type	Description
`url` required	string	Page URL.

Try it

POST/api/v1/website-statusWebsite Up/Down Check1 creditNetwork

Check whether a website is reachable right now and return its HTTP status and response time.

Input

Field	Type	Description
`url` required	string	Website URL.

Try it

POST/api/v1/broken-linksLink Status Checker8 creditsNetwork

Check the HTTP status of up to 40 URLs at once and report which are broken (4xx/5xx or unreachable) and which redirect.

Input

Field	Type	Description
`urls` required	array	List of absolute URLs to check (max 40).

Try it

POST/api/v1/http-requestHTTP Request Tester2 creditsNetwork

Send a custom HTTP request (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS) with your own headers and body, and get the status, headers, timing and body back. Same SSRF protection as every other tool: public addresses only.

Input

Field	Type	Description
`url` required	string	URL to request.
`method`	string GET · POST · PUT · PATCH · DELETE · HEAD · OPTIONS	HTTP method. Default: GET
`body`	string	Request body for POST, PUT or PATCH (max 100 KB).
`headers`	object	Extra request headers as name/value pairs.

Try it

POST/api/v1/web-scrapeWeb Scraper3 creditsNetwork

Fetch a web page and return its clean text, title and (optionally) its links and headings. Scripts, styles and tags are stripped; text is truncated at your limit (default 20,000 characters, max 100,000). Same SSRF protection as every other tool.

Input

Field	Type	Description
`url` required	string	Page URL to scrape.
`include`	string text · links · headings · all	What to return besides text. Default: text
`maxChars`	integer	Max characters of text to return. Default: 20000 1000–100000

Try it

POST/api/v1/seo-metaSEO Meta Tag Extractor2 creditsNetwork

Fetch a page and extract its title, meta description (with lengths), canonical, robots, Open Graph, Twitter tags, H1s, image alt gaps, link counts and word count.

Input

Field	Type	Description
`url` required	string	Page URL.

Try it

POST/api/v1/robots-sitemapRobots.txt & Sitemap Check2 creditsNetwork

Fetch a site’s robots.txt, list its declared sitemaps and validate the XML sitemap with a URL count and sample.

Input

Field	Type	Description
`url` required	string	Website URL or domain.

Try it

POST/api/v1/hashHash Generator1 creditInstant

Compute SHA-1, SHA-256, SHA-384 or SHA-512 hashes of text (hex and Base64).

Input

Field	Type	Description
`text` required	string	Text to hash.
`algorithm`	string SHA-1 · SHA-256 · SHA-384 · SHA-512	Hash algorithm. Default: SHA-256

Try it

POST/api/v1/passwordPassword Generator1 creditInstant

Generate strong random passwords using a cryptographic random source, with entropy in bits.

Input

Field	Type	Description
`length`	integer	Default: 16 6–128
`count`	integer	Default: 1 1–20
`symbols`	boolean	Default: true
`numbers`	boolean	Default: true
`uppercase`	boolean	Default: true
`lowercase`	boolean	Default: true

Try it

POST/api/v1/uuidUUID Generator1 creditInstant

Generate random version 4 UUIDs.

Input

Field	Type	Description
`count`	integer	Default: 1 1–100

Try it

POST/api/v1/jwt-decodeJWT Decoder1 creditInstant

Decode a JSON Web Token’s header and payload and report expiry. Does not verify the signature.

Input

Field	Type	Description
`token` required	string	The JWT string.

Try it

POST/api/v1/bcrypt-hashBcrypt Hash Generator2 creditsInstant

Hash a password with bcrypt (version 2a, cost 4–12, default 11 — the competitor’s default). The result is a standard $2a$ hash that any bcrypt verifier accepts. Passwords are capped at 72 bytes, bcrypt’s own limit.

Input

Field	Type	Description
`password` required	string	Password to hash (max 72 bytes).
`cost`	integer	Work factor. Higher is slower and stronger. Default: 11 4–12

Try it

POST/api/v1/bcrypt-verifyBcrypt Hash Verifier2 creditsInstant

Check a password against a bcrypt hash ($2a$, $2b$ or $2y$). Returns whether it matches; the comparison runs in the bcrypt library’s own timing-safe path.

Input

Field	Type	Description
`password` required	string	Password to check.
`hash` required	string	Bcrypt hash to check against, e.g. $2a$11$...

Try it

POST/api/v1/argon2-hashArgon2 Hash Generator3 creditsInstant

Hash a password with Argon2id (the OWASP-recommended password hash), version 19, memory 8192 KiB, 2 passes, 1 lane. The result is a standard PHC-format string ($argon2id$v=19$...) that any Argon2 verifier accepts. Hashing takes about 1 second on this service.

Input

Field	Type	Description
`password` required	string	Password to hash (max 4096 characters).

Try it

POST/api/v1/argon2-verifyArgon2 Hash Verifier3 creditsInstant

Check a password against an Argon2id hash (PHC format, $argon2id$v=19$...). The parameters are read from the hash itself, so hashes made anywhere with any parameters verify here. Comparison is constant-time.

Input

Field	Type	Description
`password` required	string	Password to check.
`hash` required	string	Argon2id hash to check against, e.g. $argon2id$v=19$m=8192,t=2,p=1$...

Try it

POST/api/v1/base64Base64 Encode / Decode1 creditInstant

Encode text to Base64 (UTF-8) or decode Base64 / Base64URL back to text.

Input

Field	Type	Description
`text` required	string	Input text.
`mode`	string encode · decode	encode or decode. Default: encode

Try it

POST/api/v1/url-encodeURL Encode / Decode1 creditInstant

Percent-encode text for use in URLs, or decode it back.

Input

Field	Type	Description
`text` required	string	Input text.
`mode`	string encode · decode	encode or decode. Default: encode

Try it

POST/api/v1/json-formatJSON Formatter & Validator1 creditInstant

Validate JSON and return it pretty-printed or minified, or the exact parse error.

Input

Field	Type	Description
`json` required	string	JSON text.
`indent`	integer	0 to minify. Default: 2 0–8

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POST/api/v1/text-statsWord & Character Counter1 creditInstant

Count words, characters, sentences, paragraphs and estimate reading and speaking time.

Input

Field	Type	Description
`text` required	string	Text to analyse.

Try it

POST/api/v1/case-convertCase Converter1 creditInstant

Convert text to upper, lower, title, sentence, camel, Pascal, snake, kebab or constant case.

Input

Field	Type	Description
`text` required	string	Input text.
`to` required	string upper · lower · title · sentence · camel · pascal · snake · kebab · constant	Target case.

Try it

POST/api/v1/timestampUnix Timestamp Converter1 creditInstant

Convert a Unix timestamp (seconds or milliseconds) or a date string to ISO, UTC and Unix forms. Without input, returns the current time.

Input

Field	Type	Description
`value`	string	Unix time (e.g. 1700000000) or a date (e.g. 2026-01-31T10:00:00Z). Optional.

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POST/api/v1/qr-generateQR Code Generator1 creditInstant

Generate a QR code (SVG) for any text or URL, with error-correction level L/M/Q/H and custom dark/light colours. SVG only — the Workers runtime has no canvas, so PNG output is not available for this tool.

Input

Field	Type	Description
`text` required	string	Text or URL to encode (max 2000 characters).
`errorCorrection`	string L · M · Q · H	Error-correction level. Default: M
`size`	integer	Output size in pixels. Default: 512 64–2048
`dark`	string	Dark module colour, e.g. #000000. Default: #000000
`light`	string	Background colour, e.g. #FFFFFF. Default: #FFFFFF

Try it

POST/api/v1/currency-ratesCurrency Exchange Rates1 creditNetwork

Get live exchange rates for a base currency (default USD). Returns the full table, or only the currencies you ask for (max 50). Uses exchangerate-api.com (free, no key); rates are cached for one hour.

Input

Field	Type	Description
`base`	string	Base currency code, e.g. USD. Default: USD
`currencies`	array	Optional list of currency codes to return (max 50). Omit for the full table.

Try it

POST/api/v1/gold-priceGold & Silver Price1 creditInstant

Get the live gold and silver spot price, in your currency and unit (ounce, gram, tola or kilogram). Uses gold-api.com (free, no key); prices are cached for 10 minutes. Non-USD currencies are converted with the same exchange-rate service as currency-rates.

Input

Field	Type	Description
`currency`	string	Currency code, e.g. USD. Default: USD
`unit`	string ounce · gram · tola · kilogram	Weight unit. Default: ounce

Try it

POST/api/v1/pdf-metadataPDF Metadata Reader2 creditsInstant

Read a PDF’s metadata: title, author, subject, keywords, creator, producer, creation and modification dates, version, page count and whether it is encrypted. Upload a base64 PDF (max 200 KB) or give a URL (max 1.5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded PDF (max 200 KB). One of file or url is required.
`url`	string	URL of the PDF to read (max 1.5 MB). One of file or url is required.

Try it

POST/api/v1/watermark-imageImage Watermark2 creditsInstant

Add a text watermark to a PNG image (upload base64, max 200 KB, or give a URL, max 5 MB). Choose the position, opacity and colour. PNG input only; text renders in capitals using a built-in 5x7 font (the Workers runtime has no canvas). Returns a base64 PNG.

Input

Field	Type	Description
`image`	string	Base64-encoded PNG (max 200 KB). One of image or url is required.
`url`	string	URL of the PNG to watermark (max 5 MB). One of image or url is required.
`text` required	string	Watermark text (max 100 characters).
`position`	string bottom-right · bottom-left · top-right · top-left · center	Where to place the text. Default: bottom-right
`opacity`	number	Text opacity, 0.05 to 1. Default: 0.5 0.05–1
`color`	string	Text colour, e.g. #FFFFFF. Default: #FFFFFF

Try it

POST/api/v1/word-to-pdfWord to PDF15 creditsInstant

Convert a Word (.docx) or ODT (.odt) document to PDF. TEXT-ONLY conversion: text and paragraph breaks are preserved; images, tables, headers/footers and complex layout are not (full-fidelity conversion needs LibreOffice, which does not run on Cloudflare Workers). Upload base64 (max 200 KB) or give a URL (max 5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded .docx or .odt file (max 200 KB). One of file or url is required.
`url`	string	URL of the .docx/.odt file (max 5 MB). One of file or url is required.

Try it

POST/api/v1/ppt-to-pdfPowerPoint to PDF15 creditsInstant

Convert a PowerPoint (.pptx) file to PDF, one PDF page per slide. TEXT-ONLY conversion: slide text is preserved; images, shapes, animations, speaker notes and complex layout are not (full-fidelity conversion needs LibreOffice, which does not run on Cloudflare Workers). Upload base64 (max 200 KB) or give a URL (max 5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded .pptx file (max 200 KB). One of file or url is required.
`url`	string	URL of the .pptx file (max 5 MB). One of file or url is required.

Try it

POST/api/v1/pdf-to-wordPDF to Word20 creditsInstant

Convert a PDF to a Word (.docx) document. TEXT-ONLY conversion: the extracted text is rebuilt as paragraphs; images, tables and the original layout are not preserved (full-fidelity conversion needs LibreOffice, which does not run on Cloudflare Workers). Scanned/image-only PDFs have no text to convert. Max 100 pages. Upload base64 (max 200 KB) or give a URL (max 5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded PDF (max 200 KB). One of file or url is required.
`url`	string	URL of the PDF (max 5 MB). One of file or url is required.

Try it

POST/api/v1/pdf-to-excelPDF to Excel20 creditsInstant

Convert a PDF to an Excel (.xlsx) spreadsheet: one row per text line, with the page number in the first column. TEXT-ONLY conversion: the extracted text is rebuilt as rows; images, tables and the original layout are not preserved (full-fidelity conversion needs LibreOffice, which does not run on Cloudflare Workers). Scanned/image-only PDFs have no text to convert. Max 100 pages / 10,000 rows. Upload base64 (max 200 KB) or give a URL (max 5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded PDF (max 200 KB). One of file or url is required.
`url`	string	URL of the PDF (max 5 MB). One of file or url is required.

Try it

POST/api/v1/pdf-to-pptPDF to PowerPoint20 creditsInstant

Convert a PDF to a PowerPoint (.pptx) deck, one slide per PDF page. TEXT-ONLY conversion: the extracted text is rebuilt as text boxes; images, shapes and the original layout are not preserved (full-fidelity conversion needs LibreOffice, which does not run on Cloudflare Workers). Scanned/image-only PDFs have no text to convert. Max 100 pages. Upload base64 (max 200 KB) or give a URL (max 5 MB).

Input

Field	Type	Description
`file`	string	Base64-encoded PDF (max 200 KB). One of file or url is required.
`url`	string	URL of the PDF (max 5 MB). One of file or url is required.

Try it

POST/api/v1/remove-backgroundRemove Background25 creditsInstant

NOT YET AVAILABLE on the API: AI background removal needs an ONNX segmentation model (U²-Net) running on a worker, which Cloudflare Workers cannot host (no ONNX runtime, 10 MB script limit, 128 MB memory). Calling it returns an honest "not available" error and charges 0 credits. The same removal already works in your browser on this site (Remove Background tool, on-device AI) — only the API/MCP version is missing.

Input

Field	Type	Description
`image`	string	Base64-encoded PNG (max 200 KB).
`url`	string	URL of the image (max 5 MB).

Try it

POST/api/v1/website-screenshotWebsite Screenshot25 creditsNetwork

Take a screenshot of any public web page (one viewport, or the full page) and get a PNG back. Rendered by a free third-party screenshot service (thum.io, with microlink as fallback — no key; their availability and rate limits apply). Same SSRF protection as every other tool: public addresses only. PNG output only.

Input

Field	Type	Description
`url` required	string	Page URL to capture.
`width`	integer	Viewport width in pixels. Default: 1280 320–1920
`height`	integer	Viewport height (ignored for full-page captures). Default: 800 400–1600
`fullPage`	boolean	Capture the full page height instead of one viewport. Default: false

Try it

POST/api/v1/html-to-imageHTML to Image25 creditsInstant

NOT YET AVAILABLE on the API: turning raw HTML into an image needs headless Chromium. The free screenshot services this API can use (thum.io, microlink) only capture live URLs — both reject raw HTML (tested 2026-11-09: thum.io returns 400, microlink rejects data: URLs). Calling it returns an honest "not available" error and charges 0 credits. Use website-screenshot for any live URL instead.

Input

Field	Type	Description
`html` required	string	HTML to render (max 100 KB).
`width`	integer	Output width in pixels. Default: 1280 320–1920
`height`	integer	Output height in pixels. Default: 800 400–1600

Try it

POST/api/v1/image-upscaleImage Upscaler30 creditsInstant

Enlarge a PNG image 2x or 4x with high-quality (separable bilinear) interpolation. This is classic upscaling, NOT AI: it will not invent new detail the way Real-ESRGAN does — Real-ESRGAN needs a GPU worker, which does not exist yet. PNG input only (max 200 KB upload / 5 MB by URL; input capped at 4 megapixels, output at 16 megapixels).

Input

Field	Type	Description
`image`	string	Base64-encoded PNG (max 200 KB). One of image or url is required.
`url`	string	URL of the PNG (max 5 MB). One of image or url is required.
`scale`	integer 2 · 4	Enlarge 2x or 4x. Default: 2

Try it

MCP server

Let your AI assistant use the tools

Our MCP server speaks the Streamable HTTP transport. Add the URL with your key and your assistant can check DNS, SSL, redirects, SEO tags and more on its own. Each tool tells the model its price.

Server URLhttps://api.apextoolstation.com/api/mcp?key=ats_live_YOUR_KEY

Claude Code

Run this once in your terminal.

claude mcp add --transport http apex-tools "https://api.apextoolstation.com/api/mcp?key=ats_live_YOUR_KEY"

Claude (web & desktop)

Settings → Connectors → Add custom connector, then paste the server URL above.

Use the server URL with your key in it. Then turn the connector on in a chat and ask, for example, “Check the SSL certificate of example.com”.

Cursor

Add to ~/.cursor/mcp.json.

{
  "mcpServers": {
    "apex-tools": {
      "url": "https://api.apextoolstation.com/api/mcp",
      "headers": { "Authorization": "Bearer ats_live_YOUR_KEY" }
    }
  }
}

VS Code

Add to .vscode/mcp.json in your project.

{
  "servers": {
    "apex-tools": {
      "type": "http",
      "url": "https://api.apextoolstation.com/api/mcp",
      "headers": { "Authorization": "Bearer ats_live_YOUR_KEY" }
    }
  }
}

Other clients: use the “Streamable HTTP” (or just “HTTP”) transport and send your key as a Bearer token, or keep it in the URL as ?key=. Browsing the tool list is free; only tool calls use credits.

Works where you already work

Claude Desktop

Add the MCP server as a custom connector.

Cursor

Add the server to ~/.cursor/mcp.json.

Claude Code

One terminal command connects all tools.

VS Code

Add the server to .vscode/mcp.json.

Any MCP client

Any client that speaks Streamable HTTP.

Pricing

Pay per successful call. Nothing else.

Start with 200 free credits and get 100 more every month. Top up with a one-off pack when you need more. No subscription, and credits never expire.

Starter

1,200 credits

0.42¢ per credit

For side projects, scripts and trying things out.

Choose Starter

Best valuePro

$19

5,500 credits

0.35¢ per credit · save 17%

The sweet spot for a live app or a busy AI agent.

Choose Pro

Business

$69

25,000 credits

0.28¢ per credit · save 34%

Lowest price per call, for automated workloads.

Choose Business

What each endpoint costs

Endpoint	Group	Credits	Why this price
`base64` Base64 Encode / Decode	Data & Text	1	Pure computation, no outbound traffic.
`case-convert` Case Converter	Data & Text	1	Pure computation, no outbound traffic.
`currency-rates` Currency Exchange Rates	Data & Text	1	One request to a free rates service, cached for an hour.
`dns-lookup` DNS Lookup	Network & DNS	1	A few DNS questions to public resolvers, answered in milliseconds.
`gold-price` Gold & Silver Price	Data & Text	1	One request to a free metals service, cached for 10 minutes.
`hash` Hash Generator	Security	1	Pure computation, no outbound traffic.
`ip-lookup` IP Address Lookup	Network & DNS	1	One request to a free geolocation service, cached for an hour.
`json-format` JSON Formatter & Validator	Data & Text	1	Pure computation, no outbound traffic.
`jwt-decode` JWT Decoder	Security	1	Pure computation, no outbound traffic.
`password` Password Generator	Security	1	Pure computation, no outbound traffic.
`qr-generate` QR Code Generator	Data & Text	1	Pure computation, no outbound traffic.
`reverse-ip` Reverse IP Lookup	Network & DNS	1	One PTR question to public DNS resolvers.
`text-stats` Word & Character Counter	Data & Text	1	Pure computation, no outbound traffic.
`timestamp` Unix Timestamp Converter	Data & Text	1	Pure computation, no outbound traffic.
`url-encode` URL Encode / Decode	Data & Text	1	Pure computation, no outbound traffic.
`uuid` UUID Generator	Security	1	Pure computation, no outbound traffic.
`website-status` Website Up/Down Check	Web & HTTP	1	A single request with a short timeout.
`bcrypt-hash` Bcrypt Hash Generator	Security	2	A deliberately slow hash — about 250 ms of CPU at the default cost.
`bcrypt-verify` Bcrypt Hash Verifier	Security	2	A deliberately slow hash check, same cost as hashing.
`email-auth` SPF, DKIM & DMARC Check	Network & DNS	2	Around 25 DNS queries: MX, SPF, DMARC and many DKIM selectors.
`http-headers` HTTP Headers & Security Grade	Web & HTTP	2	A full request to your page, following redirects.
`http-request` HTTP Request Tester	Web & HTTP	2	One outbound request with a body and custom headers.
`pdf-metadata` PDF Metadata Reader	Documents	2	Parses the PDF header and information dictionary — no rendering.
`ping` Ping & Latency Check	Network & DNS	2	Three quick requests plus an HTTP fallback when HTTPS fails.
`redirect-chain` Redirect Chain Tracer	Web & HTTP	2	One outbound request for every hop in the chain.
`robots-sitemap` Robots.txt & Sitemap Check	SEO	2	Fetches robots.txt and up to three sitemaps.
`seo-meta` SEO Meta Tag Extractor	SEO	2	Downloads and parses a whole HTML page.
`ssl-check` SSL Certificate Check	Network & DNS	2	A live HTTPS handshake plus a certificate log lookup.
`watermark-image` Image Watermark	Images	2	Decodes the PNG, draws text and re-encodes it — pure computation.
`argon2-hash` Argon2 Hash Generator	Security	3	Argon2id is memory-hard: about 1 second of CPU and 8 MB of memory per hash.
`argon2-verify` Argon2 Hash Verifier	Security	3	Argon2id verification re-derives the hash: same cost as hashing.
`smtp-test` SMTP Server Test	Network & DNS	3	Resolves MX records, opens a real TCP connection and speaks SMTP.
`web-scrape` Web Scraper	Web & HTTP	3	Downloads and parses a whole HTML page.
`broken-links` Link Status Checker	Web & HTTP	8	Up to 40 outbound requests in one call.
`ppt-to-pdf` PowerPoint to PDF	Documents	15	Parses the slides and renders a text-only PDF in pure JS — no LibreOffice worker exists yet.
`word-to-pdf` Word to PDF	Documents	15	Parses the document and renders a text-only PDF in pure JS — no LibreOffice worker exists yet.
`pdf-to-excel` PDF to Excel	Documents	20	Extracts the PDF text and rebuilds it as a spreadsheet in pure JS — no LibreOffice worker exists yet.
`pdf-to-ppt` PDF to PowerPoint	Documents	20	Extracts the PDF text and rebuilds it as slides in pure JS — no LibreOffice worker exists yet.
`pdf-to-word` PDF to Word	Documents	20	Extracts the PDF text and rebuilds it as a Word document in pure JS — no LibreOffice worker exists yet.
`html-to-image` HTML to Image	Images	25	Rendering raw HTML needs headless Chromium, which does not exist yet — this tool is not available, so it never charges.
`remove-background` Remove Background	Images	25	AI segmentation needs an ONNX worker that does not exist yet — this tool is not available, so it never charges.
`website-screenshot` Website Screenshot	Images	25	Renders the page in a real browser via a free screenshot service (one or two requests).
`image-upscale` Image Upscaler	Images	30	Pure-CPU resampling of every pixel — the heaviest synchronous job in the catalogue.

Successful calls are charged

You pay the listed price only when the call returns a result.

Invalid input is free

If a field is missing or wrong, the credits go straight back.

Our failures are refunded

Timeouts or errors on our side never cost you anything.

Balance on every reply

The X-Credits-Remaining header shows what is left after each call.

Good to know

Responses, errors & limits

Every response is JSON with an ok flag. HTTP status codes tell you what happened.

Status	Code	Meaning
200	`—`	Success. Result is in `data`.
400	`bad_request`	A field is missing or invalid, or the target could not be reached. `error.message` explains it in plain words.
401	`missing_key` / `invalid_key`	No API key was sent, or it was revoked. Create one in your account.
402	`insufficient_credits`	Your balance is lower than the price of this call. Top up in Billing.
404	`not_found`	No tool with that name. `GET /api/v1` lists them all.
429	`rate_limited`	Too many calls from your IP. Wait for the `Retry-After` seconds.
500	`server_error`	Something failed on our side. Try again shortly.
MCP	`—`	MCP tools/call errors return a generic error message — insufficient credits has no distinct MCP error code (REST returns 402).

Network tools never connect to private, loopback or cloud-metadata addresses, and only use ports 80, 443, 8080 and 8443.

FAQ

Developer questions

Need more? Get in touch.

How much does it cost?

Every new account gets 200 free credits, plus 100 more on the 1st of every month. Most calls cost 1 or 2 credits. When you need more, buy a one-off credit pack; there is no subscription.

Which calls use credits?

Only successful ones. If your input is invalid or the call fails, the credits are returned straight away and the call shows as refunded in your usage.

Do credits expire?

No. Purchased credits stay on your account until you use them, and they add up with the free monthly allowance.

What are the rate limits?

Network tools (DNS, SSL, HTTP, SEO and link checks) allow about 30 requests per minute per IP. Instant tools (hashing, encoding, text) allow about 120. Going over returns HTTP 429 with a Retry-After header.

Do you log or store what I send?

No. Inputs and results are not stored. Network tools contact the domain or URL you give them from our server and return the answer to you.

Can I call the API from a web page?

Yes. Every endpoint sends CORS headers, so you can call it with fetch() straight from the browser.

Which MCP clients work?

Any client that supports the Streamable HTTP transport, including Claude (web, desktop and Claude Code), Cursor, VS Code, Windsurf and custom agents built on an MCP SDK.

Can I use it in a commercial product?

Yes. For very high or guaranteed volumes, contact us and we can set up a dedicated plan.

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