MCP serverio.github.Nutshell2000/agent-data-tools-utilities

Decode standard or URL-safe base64 to UTF-8 text. Missing padding is tolerated. Use to read encoded headers, tokens and data URLs. Example: text=aGVsbG8gd29ybGQ=. Price $0.01/call

Encode UTF-8 text as standard base64, and also return the URL-safe variant. Use for data URLs, headers and basic auth strings. Example: text=hello world. Price $0.01/call via x402

Convert text or identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, UPPER and lower. Handles mixed input like 'userID_value

Flip one or more fair coins using a cryptographic random source. Returns each result and the totals. Use for fair decisions and games. Example: count=1. Price $0.01/call via x402 U

Convert a colour between hex, RGB and HSL, and give its relative luminance and whether black or white text reads better on it. Accepts #rgb, #rrggbb, rgb(r,g,b) and hsl(h,s%,l%). U

WCAG 2 contrast ratio between a text colour and a background colour, with pass/fail for AA and AAA at normal and large text sizes. Use to check that a design is readable. Example:

Next run times (in UTC) of a standard 5-field cron expression (minute hour day month weekday; ranges, lists, steps and names like MON or JAN supported). Use to check a schedule bef

Convert CSV (comma, semicolon, tab or pipe; delimiter detected automatically; quoted fields supported) to a JSON array of objects using the first row as keys. Numbers stay as text

Add (or subtract, with negative numbers) years, months, weeks, days, hours and minutes to a date, or add business days (skipping Saturdays and Sundays). Month ends are clamped (31

Time between two dates or timestamps: total days, weeks, hours, minutes and seconds, a years-months-days breakdown, and the number of weekdays (Monday-Friday) in between. Use for d

Weekday, ISO week number and week-year, day of the year, quarter, days in the month, leap year, Unix timestamp and whether it is a weekend, for any date. Use for calendar and repor

Roll dice in standard notation such as 2d6+3 or 1d20, up to 100 dice of up to 1000 sides, with a cryptographic random source. Returns every roll, the modifier and the total. Use fo

Returns the message you send, with its length and the server time. Use to test an x402 client, payment flow or agent tool wiring end to end. Example: message=hello. Price $0.01/cal

Hash UTF-8 text with SHA-256 (default), SHA-1, SHA-384 or SHA-512 and return the digest in hex and base64. Use for checksums, cache keys and deduplication. Example: text=hello. Pri

Compute an HMAC of a message with a key using SHA-256 (default), SHA-1, SHA-384 or SHA-512, in hex and base64. Use to check webhook signatures. The key is used only for this call a

Strip HTML to readable plain text: scripts and styles removed, block elements become line breaks, list items get bullets, entities decoded. Use to feed web content or emails to an

Name and plain-language meaning of an HTTP status code (1xx-5xx, including 402 Payment Required and 429 Too Many Requests), and whether to retry. Use when handling API errors. Exam

Details of an IPv4 network in CIDR notation: network and broadcast address, first and last usable host, netmask, number of addresses, and whether a given IP falls inside. Use for f

Classify an IPv4 or IPv6 address without any lookup: version, whether it is private, loopback, link-local, carrier-grade NAT or public, and its integer and reverse-DNS forms (IPv4)

Format JSON with indentation (2 or 4 spaces, or tabs) and optionally sorted keys. Returns the formatted text. Use to make machine JSON readable or to normalise it for diffs. Exampl

Remove all unnecessary whitespace from JSON and report the size before and after. Use to shrink payloads or prompts. Example: text={ "a" : 1 }. Price $0.01/call via x402 USDC or a

Fix JSON as LLMs often write it: removes ```json fences and surrounding prose, comments and trailing commas, converts single quotes, quotes bare keys, maps True/False/None, and clo

Convert a JSON array of objects to CSV with a header row built from all keys. Nested values are written as JSON. Use to export API results to a spreadsheet. Example: text=[{"name":

Check whether text is valid JSON. Returns valid true/false, the parsed value's type and size, and for invalid input the error message with line and column. Use before parsing an LL

Decode a JSON Web Token's header and payload without verifying the signature, and report issued-at, not-before and expiry as dates and whether it has expired. The token is not stor

Ask a yes-or-no question and get one of the 20 classic Magic 8-Ball answers, chosen at random. For fun only. Use for games and chat bots. Example: question=Will it ship today?. Pri

Convert Markdown (headings, paragraphs, bold, italic, strikethrough, links, images, inline and fenced code, lists, quotes, rules) to HTML. Raw HTML in the input is escaped, so the

MIME (content) type for a file name or extension, e.g. report.pdf → application/pdf, and whether browsers usually display it inline. Use when uploading or serving files. Example: f

Convert a number (1-3999) to Roman numerals, or Roman numerals back to a number. Give either number or roman. Use for dates, outlines and puzzles. Example: number=2026. Price $0.01

Write a whole number (up to trillions, negatives allowed) out in English words, e.g. for cheques and invoices. Also returns the cheque form with 'and' cents when given a decimal am

A paid round-trip check: returns pong and the server time. Use to test that an x402 wallet, client or MCP setup can pay and receive a result. Price $0.01/call via x402 USDC or a ca

One or more random colours in hex, RGB and HSL, optionally limited to pastel or dark tones. Use for placeholders, avatars and design ideas. Example: count=3. Price $0.01/call via x

One or more random whole numbers in a range (inclusive), optionally all different, from a cryptographic random source. Use for draws, sampling and games. Example: min=1. Price $0.0

Generate strong random passwords or passphrase-style strings: choose length and character sets, from a cryptographic random source. Generated on demand; nothing is stored or logged

Pick one or more items at random (without repeats) from a comma- or line-separated list. Use for raffles, choosing who goes first, or breaking ties fairly. Example: items=Ada,Alan,

Shuffle a comma- or line-separated list into a random order (Fisher-Yates with a cryptographic random source). Use for draw orders, seating and playlists. Example: items=1,2,3,4,5.

Split a list of names into a given number of random, evenly sized teams. Use for games, workshops and classrooms. Example: items=Ada,Alan,Grace,Linus,Margaret,Tim. Price $0.01/call

Compare two semantic versions (1.2.3, pre-releases like 2.0.0-rc.1 handled by the SemVer rules) and get which is newer, plus the next major, minor and patch versions of the first.

Turn any text into a URL-friendly slug: accents removed (é→e, ß→ss), lower case, non-alphanumerics replaced by a separator (- by default). Use for file names, URLs and IDs. Example

Line-by-line difference between two texts: each line marked as unchanged, removed or added, with counts. Use to see what changed between two versions of a document, config or promp

Find all email addresses, URLs, phone-number-like strings, hashtags, @mentions and numbers in a text, each list de-duplicated. Use to pull contacts and links out of scraped pages o

Count characters, words, sentences and paragraphs, estimate reading and speaking time, and compute the Flesch reading-ease score and grade level for English text. Use to check the

Convert between units of length, mass, volume (incl. US cups and gallons), temperature (c, f, k), speed, area, data size (kB vs KiB), time, energy and pressure. Example units: km,

Convert a Unix timestamp (seconds or milliseconds, detected automatically) to ISO date and time, or an ISO date to a Unix timestamp. Without input, returns the current time in both

Decode percent-encoded text, treating + as a space when plus=true (form encoding). Use to read encoded links and form data. Example: text=a%20b%26c. Price $0.01/call via x402 USDC

Percent-encode text for use in a URL query value (encodeURIComponent) and as a full URL (encodeURI). Use when building query strings. Example: text=a b&c=d/é. Price $0.01/call via

Split a URL into protocol, host, port, path, query parameters (as an object), hash and origin, and report whether the host is an IP address. Use to read query parameters or check a

Generate 1 to 100 random version-4 UUIDs from a cryptographic random source. Use for IDs, idempotency keys and test data. Example: count=3. Price $0.01/call via x402 USDC or a card

Check an IBAN's format, its country-specific length and its mod-97 check digits, and return it formatted in groups of four. Use before saving bank details or paying out. Example: i

Check an ISBN-10 or ISBN-13 check digit and convert valid ISBN-10s to ISBN-13. Hyphens and spaces are ignored. Use before cataloguing or ordering books. Example: isbn=0-306-40615-2

Check whether a number passes the Luhn (mod 10) algorithm used by card numbers, IMEI numbers and many IDs, and compute the check digit to append. Only the format is checked; nothin

A fair random yes or no, with a cryptographic random source. For quick decisions when the options are equally good. Use to break ties. Price $0.01/call via x402 USDC or a card key