mcp server

Blixtworks

63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.

Description as published by the maintainer. Source

• version 1.1.0
• active

active — Most recent push to the repository was 2026-08-03.

What this server can do

68 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

address_validate(chain, address, paymentTx, payerAddress)

Validate an EVM address and detect whether it is a contract. POST {"address": "0x...", "chain": "base"} -> checksum form and account type. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

base64(mode, text, paymentTx, payerAddress)

Base64 encode or decode. POST {"text": "...", "mode": "encode"|"decode", "urlSafe": false} -> result. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

caption(image, paymentTx, payerAddress)

Image captioning. POST {"image": "<https url or data URI>"} -> one-sentence natural-language description. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

case_convert(to, text, paymentTx, payerAddress)

Convert text case. POST {"text": "...", "to": "camel"|"snake"|"kebab"|"pascal"|"upper"|"lower"|"title"} -> converted text. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

categorize(image, labels, paymentTx, payerAddress)

Zero-shot image categorization (CLIP). POST {"image": "<https url or data URI>", "labels": ["optional", "custom"]} -> ranked labels with confidence scores. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

check_credit(address)

Free: how much unspent credit a wallet address currently has with this endpoint. Required: address.

color_convert(color, paymentTx, payerAddress)

Convert colours between hex, RGB and HSL. POST {"color": "#2563eb"} -> hex, rgb, hsl and luminance/contrast info. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

cron_parse(count, paymentTx, expression, payerAddress)

Explain a cron expression and list upcoming run times. POST {"expression": "0 9 * * 1-5", "count": 5, "timezone": "UTC"}. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

csv_to_json(csv, paymentTx, payerAddress)

Convert CSV to JSON. POST {"csv": "...", "header": true, "delimiter": ","} -> array of objects (or arrays when header is false). Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

currency_convert(to, from, amount, paymentTx, payerAddress)

Convert currency at current or historical reference rates (ECB via Frankfurter). POST {"amount": 100, "from": "EUR", "to": "SEK", "date": "2026-01-15"}. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

date_diff(to, from, paymentTx, payerAddress)

Difference between two dates. POST {"from": "2026-01-01", "to": "2026-12-25"} -> days, hours, business days and a human summary. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

diff(a, b, paymentTx, payerAddress)

Compare two texts. POST {"a": "...", "b": "...", "mode": "lines"|"words"|"chars"} -> unified diff plus added/removed counts. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

distance(to, from, paymentTx, payerAddress)

Great-circle distance between two coordinates. POST {"from": {"lat": 59.33, "lon": 18.07}, "to": {"lat": 51.51, "lon": -0.13}} -> km, miles and bearing. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

dns(type, domain, paymentTx, payerAddress)

DNS lookup. POST {"domain": "example.com", "type": "A"|"AAAA"|"MX"|"TXT"|"NS"|"CNAME"|"SOA"|"all"} -> resolved records. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

email_validate(email, paymentTx, payerAddress)

Validate an email address: syntax plus live MX record check on the domain. POST {"email": "a@b.com"} -> deliverability signals. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

embed(image, paymentTx, payerAddress)

CLIP image embedding. POST {"image": "<https url or data URI>"} -> 512-dim vector for similarity search. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

ens_resolve(name, paymentTx, payerAddress)

Resolve an ENS name to an address, or an address to its primary ENS name. POST {"name": "vitalik.eth"} or {"address": "0x..."}. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

exif(image, paymentTx, payerAddress)

EXIF metadata extraction. POST {"image": "<https url or data:image URI>"} -> camera, timestamps, GPS and other metadata. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

gas_price(chain, paymentTx, payerAddress)

Current gas price and what a transfer costs. POST {"chain": "base"|"ethereum"} -> gwei, block number and estimated transfer cost. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

hash(text, paymentTx, algorithms, payerAddress)

Cryptographic hashes. POST {"text": "...", "algorithms": ["sha256","md5"]} -> hex digests (default md5, sha1, sha256, sha512). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

hmac(key, text, algorithm, paymentTx, payerAddress)

HMAC signature. POST {"text": "...", "key": "...", "algorithm": "sha256"} -> hex and base64 signature. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

how_to_pay(tool)

Free: exact payment steps, the receiving address, and how credit works.

http_headers(url, paymentTx, payerAddress)

Inspect HTTP response headers for a URL. POST {"url": "https://...", "method": "HEAD"} -> status, headers, timing, redirect chain. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

iban_validate(iban, paymentTx, payerAddress)

Validate an IBAN (checksum and country length). POST {"iban": "SE45 5000 0000 0583 9825 7466"}. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_crop(x, y, image, width, height, paymentTx, payerAddress)

Crop an image. POST {"image": "https://...", "x": 0, "y": 0, "width": 200, "height": 200} -> cropped image as a data URI. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_info(image, paymentTx, payerAddress)

Image dimensions and properties without any ML. POST {"image": "https://..."} -> width, height, aspect ratio, format, file size, transparency. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_palette(image, colors, paymentTx, payerAddress)

Extract the dominant colour palette from an image. POST {"image": "https://...", "colors": 5} -> hex colours with share percentages. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_placeholder(color, width, height, paymentTx, payerAddress)

Generate a solid or gradient placeholder image. POST {"width": 600, "height": 400, "color": "#2563eb", "text": "optional"} -> PNG data URI. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_resize(image, width, paymentTx, payerAddress)

Resize or convert an image. POST {"image": "https://...", "width": 800, "height": null, "format": "jpeg"|"png", "quality": 80} -> data URI of the result. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

image_transform(image, filter, paymentTx, payerAddress)

Rotate, flip or apply filters to an image. POST {"image": "...", "rotate": 90, "flip": "horizontal", "filter": "greyscale"|"sepia"|"invert"|"blur"} -> transformed image. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

ip_lookup(host, paymentTx, payerAddress)

Resolve a hostname to IPs and reverse-resolve. POST {"host": "example.com"} -> A/AAAA records and PTR names. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

json_format(json, mode, paymentTx, payerAddress)

Format, minify or validate JSON. POST {"json": "...", "mode": "pretty"|"minify"|"validate", "indent": 2} -> formatted output or validation error with position. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

json_query(json, path, paymentTx, payerAddress)

Query JSON with a dot/bracket path. POST {"json": "...", "path": "users[0].name"} -> the value at that path. Supports [*] to map over arrays. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

json_to_csv(json, paymentTx, payerAddress)

Convert a JSON array of objects to CSV. POST {"json": "[{...}]", "delimiter": ","} -> CSV text. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

jwt_decode(token, paymentTx, payerAddress)

Decode a JWT without verifying it. POST {"token": "eyJ..."} -> header, payload, expiry status. Signature is NOT verified. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

language_detect(text, paymentTx, payerAddress)

Detect the language of a text. POST {"text": "..."} -> ISO 639-3 code and name. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

list_tools(group)

Free: every Blixtworks tool with price, inputs and description (63 tools). Optionally filter by group.

lorem(paymentTx, paragraphs, payerAddress)

Generate placeholder text. POST {"paragraphs": 2, "wordsPerParagraph": 40} -> lorem ipsum text. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

luhn_validate(number, paymentTx, payerAddress)

Validate an identifier with the Luhn checksum (credit cards, IMEI, Swedish personnummer). POST {"number": "4111111111111111"} -> validity and detected card scheme. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

markdown_to_html(markdown, paymentTx, payerAddress)

Render Markdown to HTML. POST {"markdown": "# Title"} -> HTML string. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

md(url, mode, paymentTx, payerAddress)

HTML to Markdown. POST {"url": "<https url>"} or {"html": "<raw html>"} (+ optional "mode": "article"|"full", default article) -> clean LLM-ready markdown with title/byline. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

metadata(url, paymentTx, payerAddress)

Extract page metadata: title, description, Open Graph, Twitter card, canonical, favicon, language. POST {"url": "https://..."}. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

number_base(to, from, value, paymentTx, payerAddress)

Convert a number between bases. POST {"value": "255", "from": 10, "to": 16} -> converted string (bases 2-36). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

ocr(image, paymentTx, payerAddress)

OCR (English). POST {"image": "<https url or data URI>"} -> extracted text with confidence score. Costs $0.03 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

pdf(pdf, paymentTx, payerAddress)

PDF text extraction. POST {"pdf": "<https url or data:application/pdf base64 URI>"} -> plain text, page count and metadata. Costs $0.03 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

percentage(a, b, mode, paymentTx, payerAddress)

Percentage maths. POST {"mode": "change"|"of"|"increase"|"decrease", "a": 120, "b": 150} -> result with explanation. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

phone_parse(phone, paymentTx, payerAddress)

Parse and validate a phone number. POST {"phone": "+46701234567", "country": "SE"} -> validity, type, and E.164/national/international formats. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

qr(text, format, paymentTx, payerAddress)

QR code generation. POST {"text": "<content>", "format": "svg"|"png"} -> QR code as an SVG string or PNG data URI. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

redeem_payment(paymentTx)

Turn a USDC payment you already made into credit you can spend across multiple tool calls. Pass the transaction hash. Required: paymentTx.

regex(text, flags, pattern, paymentTx, payerAddress)

Test a regular expression and extract matches. POST {"text": "...", "pattern": "\\d+", "flags": "g"} -> matches with groups and indices. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

robots_check(url, paymentTx, userAgent, payerAddress)

Fetch and interpret robots.txt. POST {"url": "https://example.com", "userAgent": "GPTBot", "path": "/"} -> whether crawling is allowed, plus sitemaps. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

rss_parse(url, paymentTx, payerAddress)

Parse an RSS or Atom feed. POST {"url": "https://..."} or {"xml": "..."} -> feed title and items with links and dates. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

sitemap_parse(url, paymentTx, payerAddress)

Parse a sitemap.xml (including sitemap indexes). POST {"url": "https://example.com/sitemap.xml"} -> URLs with last-modified dates. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

slugify(text, paymentTx, payerAddress)

URL-safe slug from any text. POST {"text": "Hällö Wörld!"} -> {"slug": "hallo-world"}. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

ssl_check(domain, paymentTx, payerAddress)

Inspect a TLS certificate. POST {"domain": "example.com", "port": 443} -> issuer, subject, validity dates, days until expiry. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

text_stats(text, paymentTx, payerAddress)

Text statistics. POST {"text": "..."} -> characters, words, sentences, paragraphs, reading time, top words. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

timestamp(value, timezone, paymentTx, payerAddress)

Convert timestamps and dates. POST {"value": 1735689600, "timezone": "Europe/Stockholm"} or {"value": "2026-01-01T00:00:00Z"} -> unix seconds/ms, ISO, and formatted local time. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

token_info(chain, token, paymentTx, payerAddress)

ERC-20 token metadata. POST {"token": "0x...", "chain": "base"} -> name, symbol, decimals, total supply. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

try_sample

Free: runs the real CLIP model on a sample image so you can judge output quality before paying.

tx_lookup(hash, chain, paymentTx, payerAddress)

Look up a transaction by hash. POST {"hash": "0x...", "chain": "base"} -> status, value, gas used, from/to and block. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

unit_convert(to, from, value, paymentTx, payerAddress)

Convert between units. POST {"value": 5, "from": "km", "to": "mi"} -> converted value. Supports length, mass, volume, time, area, speed, data, pressure, energy and temperature (c/f/k). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

url_expand(url, paymentTx, payerAddress)

Expand a shortened URL by following redirects. POST {"url": "https://bit.ly/x"} -> final destination and hop chain. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

uuid(count, paymentTx, payerAddress)

Generate UUIDs. POST {"count": 5, "version": "v4"} -> list of UUIDs (max 100). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

wallet_balance(chain, address, paymentTx, payerAddress)

Native and USDC balance for an address. POST {"address": "0x...", "chain": "base"|"ethereum"} -> balances, transaction count and explorer link. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

whois(domain, paymentTx, payerAddress)

Domain registration data via RDAP. POST {"domain": "example.com"} -> registrar, creation/expiry dates, nameservers, status. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

word_frequency(text, limit, ngram, paymentTx, payerAddress)

Word and n-gram frequency analysis. POST {"text": "...", "ngram": 1, "limit": 20, "stopwords": true} -> ranked terms. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

xml_to_json(xml, paymentTx, payerAddress)

Convert XML to JSON. POST {"xml": "<root>...</root>"} -> parsed object. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

yaml_convert(to, text, paymentTx, payerAddress)

Convert between YAML and JSON. POST {"text": "...", "to": "json"|"yaml"} -> converted document. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

Last successful function declaration observed on 2026-08-13. Source: https://www.blixtworks.com/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://www.blixtworks.com/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/Eggis70/img-categorize
• Website — https://www.blixtworks.com
• npm: blixtworks-mcp
• Remote endpoint (streamable-http) — https://www.blixtworks.com/mcp