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100
MCP live MCP 2025-11-25 streamable-http

SmartTools

io.github.9thshini/smart-tools

70+ free calculators & converters as MCP tools; each result links to its source page.

Uptime
100.0%
3 direct probes · 30d
Response
101ms
last probe
Tools
73
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://smart-tools.xyz/mcp

Tools · 73

length_converter

Convert a value between length units. Units: km (Kilometer), m (Meter), cm (Centimeter), mm (Millimeter), µm (Micrometer), mi (Mile), yd (Yard), ft (Foot), in (Inch), nmi (Nautical mile). Calculation …

weight_converter

Convert a value between weight units. Units: t (Tonne), kg (Kilogram), g (Gram), mg (Milligram), lb (Pound), oz (Ounce), st (Stone). Calculation runs on smart-tools.xyz.

temperature_converter

Convert a value between temperature units. Units: °C (Celsius), °F (Fahrenheit), K (Kelvin), °R (Rankine). Calculation runs on smart-tools.xyz.

area_converter

Convert a value between area units. Units: km² (Square kilometer), m² (Square meter), cm² (Square centimeter), mm² (Square millimeter), ha (Hectare), ac (Acre), mi² (Square mile), ft² (Square foot), y…

volume_converter

Convert a value between volume units. Units: m³ (Cubic meter), L (Liter), mL (Milliliter), gal_us (US gallon), gal_uk (UK gallon), qt (US quart), pt_us (US pint), pt_uk (UK pint), cup (US cup), fl oz …

speed_converter

Convert a value between speed units. Units: m/s (Meter per second), km/h (Kilometer per hour), mph (Mile per hour), ft/s (Foot per second), kn (Knot). Calculation runs on smart-tools.xyz.

pressure_converter

Convert a value between pressure units. Units: Pa (Pascal), kPa (Kilopascal), hPa (Hectopascal), bar (Bar), atm (Atmosphere), psi (Pound per sq inch), mmHg (Millimeter of mercury), inHg (Inch of mercu…

angle_converter

Convert a value between angle units. Units: ° (Degree), rad (Radian), grad (Gradian), mrad (Milliradian), rev (Turn), ′ (Arcminute), ″ (Arcsecond). Calculation runs on smart-tools.xyz.

energy_converter

Convert a value between energy units. Units: J (Joule), kJ (Kilojoule), cal (Calorie), kcal (Kilocalorie), Wh (Watt-hour), kWh (Kilowatt-hour), BTU (British thermal unit), ft·lb (Foot-pound), eV (Elec…

data_converter

Convert a value between data units. Units: bit (Bit), B (Byte), kB (Kilobyte), MB (Megabyte), GB (Gigabyte), TB (Terabyte), KiB (Kibibyte), MiB (Mebibyte), GiB (Gibibyte), TiB (Tebibyte). Calculation …

time_converter

Convert a value between time units. Units: µs (Microsecond), ms (Millisecond), s (Second), min (Minute), h (Hour), d (Day), wk (Week), mo (Month), yr (Year). Calculation runs on smart-tools.xyz.

loan_calculator

Monthly payment, total repayment and interest for an amortising loan (annuity formula). Runs on smart-tools.xyz.

mortgage_calculator

Monthly mortgage payment including optional down payment, property tax and insurance (PITI). Runs on smart-tools.xyz.

compound_interest_calculator

Future balance and interest earned: A = P(1 + r/n)^(nt). Runs on smart-tools.xyz.

vat_calculator

Add VAT to a net amount or remove it from a gross amount. Runs on smart-tools.xyz.

tip_calculator

Tip amount, total and per-person split for a bill. Runs on smart-tools.xyz.

discount_calculator

Final price after one or two successive discounts, plus amount saved. Runs on smart-tools.xyz.

percentage_calculator

Percentage operations. operation=percent_of: a% of b. operation=is_what_percent: a is what % of b. operation=change: percent change from a to b. Runs on smart-tools.xyz.

salary_calculator

Convert pay between hourly, daily, weekly, biweekly, monthly and annual. Runs on smart-tools.xyz.

margin_calculator

Profit, margin (share of price) and markup (share of cost) from cost and selling price. Runs on smart-tools.xyz.

unit_price_calculator

Compare price per unit of two packs and report which is cheaper. Runs on smart-tools.xyz.

fuel_cost_calculator

Fuel needed and trip cost. system=metric: distance km, consumption L/100km. system=imperial: distance miles, consumption mpg. Runs on smart-tools.xyz.

electricity_cost_calculator

Running cost of an appliance per day, month and year from its wattage. Runs on smart-tools.xyz.

bmi_calculator

Body Mass Index and category. system=metric: weight_kg, height_cm. system=imperial: weight_lb, height_ft (+height_in). Runs on smart-tools.xyz.

bmr_calculator

Basal metabolic rate (Mifflin–St Jeor) and daily calories (TDEE = BMR × activity). Runs on smart-tools.xyz.

body_fat_calculator

Body fat percentage by the US Navy (Hodgdon–Beckett) method, metric measurements in cm. Females require hip_cm. Runs on smart-tools.xyz.

ideal_weight_calculator

Healthy weight range (BMI 18.5–24.9) plus Devine, Robinson, Miller and Hamwi formula estimates, from height in cm. Runs on smart-tools.xyz.

due_date_calculator

Estimated due date by Naegele's rule (+280 days from last period, adjusted for cycle length). Runs on smart-tools.xyz.

age_calculator

Exact age in years, months and days between a birth date and a reference date (default: today). Runs on smart-tools.xyz.

date_difference_calculator

Difference between two dates: calendar years/months/days, total days, weeks and weekday count. Runs on smart-tools.xyz.

hours_calculator

Time worked between two clock times (handles overnight), minus a break, with optional pay. Times as HH:MM. Runs on smart-tools.xyz.

aspect_ratio_calculator

Simplify a width×height ratio and scale to a new width or height. Runs on smart-tools.xyz.

standard_deviation_calculator

Mean, variance and standard deviation (both sample and population) of a list of numbers. Runs on smart-tools.xyz.

fraction_calculator

Exact arithmetic on two fractions (a/b op c/d), reduced to lowest terms. op is one of + - * /. Runs on smart-tools.xyz.

triangle_calculator

Solve a triangle. mode=sss: three sides a,b,c. mode=sas: two sides a,b and the included angle angle_c (degrees). Returns sides, angles (degrees), area and perimeter. Runs on smart-tools.xyz.

pace_calculator

Running pace per km and per mile, plus speed, from distance and time. Runs on smart-tools.xyz.

subnet_calculator

IPv4 subnet details: network, broadcast, mask, wildcard, host range and count for an IP and prefix. Runs on smart-tools.xyz.

color_converter

Convert a color between HEX, RGB and HSL. Accepts #hex, rgb()/rgba(), hsl()/hsla(). Runs on smart-tools.xyz.

gpa_calculator

Weighted grade point average from letter grades (US 4.0 scale, +/-) or numeric grade points and credit hours. Runs on smart-tools.xyz.

scientific_calculator

Evaluate a math expression with correct order of operations: + - * / % ^, parentheses, and functions (sqrt, sin, cos, tan, ln, log, exp, min, max, factorial via !). Constants pi, e. Angles in radians.…

base64

Encode text to Base64 or decode Base64 back to text, UTF-8 safe, with an optional URL-safe alphabet. Runs on smart-tools.xyz.

case_converter

Convert text to UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE. Runs on smart-tools.xyz.

html_entities

Escape the five special HTML characters (optionally all non-ASCII) or decode named and numeric HTML entities back to text. Runs on smart-tools.xyz.

url_encoder

Percent-encode or decode a URL. mode=component escapes /?&= (for a value); mode=full keeps them (for a whole address). Runs on smart-tools.xyz.

slug_generator

Turn text (incl. Ukrainian and accented Latin) into a clean URL slug; each non-empty line becomes its own slug. Runs on smart-tools.xyz.

remove_duplicates

Remove duplicate lines, with optional trim, case-insensitive matching, sorting or keeping only the duplicated lines. Runs on smart-tools.xyz.

text_counter

Count characters (with and without spaces), words, lines, paragraphs and estimated reading time. Runs on smart-tools.xyz.

text_diff

Line-level diff of two texts (LCS): counts of added/removed lines plus a marked-up line list. Runs on smart-tools.xyz.

lorem_ipsum

Generate placeholder lorem ipsum text by paragraphs, sentences or words. Runs on smart-tools.xyz.

number_base

Convert an integer between bases 2–36 (binary, octal, decimal, hex and more), exact for 64-bit values via BigInt. Runs on smart-tools.xyz.

timestamp_converter

Convert between a Unix timestamp and an ISO 8601 date (UTC). direction=to_date: epoch → date; to_timestamp: date → epoch. Runs on smart-tools.xyz.

transliteration

Transliterate Ukrainian Cyrillic to Latin by the official KMU #55 passport standard. Runs on smart-tools.xyz.

uuid_generator

Generate one or more random version 4 (RFC 4122) UUIDs. Runs on smart-tools.xyz.

hash_generator

Hash text with SHA-1, SHA-256, SHA-384 or SHA-512 (hex, over UTF-8 bytes). MD5 is not supported. Runs on smart-tools.xyz.

jwt_decoder

Decode a JSON Web Token's header and payload (base64url). Does NOT verify the signature — that needs the secret/key. Runs on smart-tools.xyz.

cron_parser

Parse a 5-field cron expression (minute hour day-of-month month day-of-week) into a plain-English description. Runs on smart-tools.xyz.

regex_tester

Test a JavaScript regular expression against text and return every match with its captured groups. Runs on smart-tools.xyz.

layout_fixer

Fix text typed in the wrong keyboard layout between English QWERTY and Ukrainian ЙЦУКЕН. Runs on smart-tools.xyz.

wcag_contrast_checker

Compute the WCAG 2.x contrast ratio between two hex colors and whether it passes AA/AAA for normal and large text. Runs on smart-tools.xyz.

csv_to_json

Parse CSV/TSV text (auto-detecting tab, semicolon or comma delimiter) with a header row into an array of JSON objects. Runs on smart-tools.xyz.

csv_to_sql

Turn CSV/TSV rows into SQL INSERT statements with standard double-quoted identifiers and escaped values. Runs on smart-tools.xyz.

table_to_csv

Convert a pasted HTML <table> or delimited (tab/semicolon/comma) table into clean CSV. Runs on smart-tools.xyz.

markdown_table

Build a padded GitHub-flavored Markdown table from CSV/TSV text (first row is the header). Runs on smart-tools.xyz.

json_formatter

Validate and pretty-print or minify JSON, reporting the line and column on a parse error. Runs on smart-tools.xyz.

gitignore_generator

Build a .gitignore from curated templates for Node, Python, Go, Rust, macOS, VS Code and more. Runs on smart-tools.xyz.

gradient_generator

Build a CSS linear or radial gradient background declaration from two or more colors. Runs on smart-tools.xyz.

htaccess_generator

Generate Apache .htaccess rules: force HTTPS, www redirect, caching, gzip, hotlink protection and more. Runs on smart-tools.xyz.

meta_tag_generator

Generate SEO, Open Graph and Twitter Card HTML meta tags for a page. Runs on smart-tools.xyz.

random_number_generator

Generate cryptographically random integers in a range, optionally unique and sorted. Runs on smart-tools.xyz.

robots_txt_generator

Build a robots.txt: allow or block all, custom disallow paths, AI-crawler blocking, crawl-delay and sitemap. Runs on smart-tools.xyz.

utm_builder

Append encoded UTM campaign parameters to a URL, preserving any existing query and fragment. Runs on smart-tools.xyz.

file_hash

Compute a SHA-1/256/384/512 hex checksum of provided text or base64 bytes. Runs on smart-tools.xyz.

password_generator

Generate a cryptographically strong random password with configurable length and character sets. Runs on smart-tools.xyz.

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "smarttools": {
      "url": "https://smart-tools.xyz/mcp",
      "transport": "streamable-http"
    }
  }
}