SmartTools MCP Server

by 9thshini Your server? Claim it

answering

SmartTools is answering right now. Last checked 10 min ago. It exposes 74 tools.

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

Uptime history 35 days of history · worst day 99%

35 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

146 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 18 September 2026. No other catalogue keeps this.

18 Sep a tool appeared height_converter

Nothing serious here today

Today is the operative word: we check SmartTools every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add smart-tools --transport http https://smart-tools.xyz/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "smart-tools": {
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.smart-tools]
url = "https://smart-tools.xyz/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "smart-tools": {
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "smart-tools": {
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

Available tools 74

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

csv

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.

text

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.

age

age_calculator

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

angle

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.

area

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), yd² (Square yard), in² (Square inch). Calculation runs on smart-tools.xyz.

aspect

aspect_ratio_calculator

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

base64

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.

bmi

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

bmr_calculator

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

body

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.

case

case_converter

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

color

color_converter

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

compound

compound_interest_calculator

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

cron

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.

data

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 runs on smart-tools.xyz.

date

date_difference_calculator

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

discount

discount_calculator

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

due

due_date_calculator

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

duplicates

remove_duplicates

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

electricity

electricity_cost_calculator

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

energy

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 (Electronvolt). Calculation runs on smart-tools.xyz.

file

file_hash

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

fraction

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.

fuel

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.

gitignore

gitignore_generator

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

gpa

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.

gradient

gradient_generator

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

hash

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.

height

height_converter

Convert a height between centimetres and feet/inches. Give cm, or feet (with optional inches). One inch = 2.54 cm exactly. Runs on smart-tools.xyz.

hours

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.

htaccess

htaccess_generator

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

html

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.

ideal

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.

json

json_formatter

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

jwt

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.

layout

layout_fixer

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

length

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 runs on smart-tools.xyz.

loan

loan_calculator

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

lorem

lorem_ipsum

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

margin

margin_calculator

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

markdown

markdown_table

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

Endpoints

URL	Transport	State	Latency	Checked
https://smart-tools.xyz/mcp	streamable-http	answering	125 ms	10 min ago

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SmartTools — questions

Answers built from our own checks of this server.

What can SmartTools do?

It exposes 74 tools, read directly from the server on our last check. Among them: age_calculator, angle_converter, area_converter, aspect_ratio_calculator, base64, bmi_calculator and 68 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is SmartTools mostly used for?

Its tools cluster around csv and text. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is SmartTools working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 146 ms. The bar chart above shows every period we have measured.

How do I connect SmartTools?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does SmartTools need an API key?

No. SmartTools completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 74 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is SmartTools?

It answers our handshake in 146 ms on average, which is faster than 78% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.