SmartTools
by 9thShini · remote · no sign-in to list tools · v1.0.0 · published by GitHub user 9thShini
70+ free calculators & converters as MCP tools; each result links to its source page.
Deletes · 1Final · 11Changes · 58
74 tools: 1 can delete or cancel things, 11 do something that can't be undone, 58 change things and 4 only read.
Scanned Oct 21, 2026
- Deletes or cancels1Claude Code: deny: see these tools
- Can't be undone11Claude Code: ask: see these tools
- Changes things58Claude Code: ask: see these tools
- Only reads4Claude Code: allow: see these tools
No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http smart-tools https://smart-tools.xyz/mcpTools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
74 tools
Deletes or cancels 1Claude Code: deny
remove_duplicatesRemove duplicate lines, with optional trim, case-insensitive matching, sorting or keeping only the duplicated lines.No findings
Why it is in this group
- The name "remove_duplicates" says "remove": a word for removing or ending something.
Description, as the server wrote it Remove duplicate lines, with optional trim, case-insensitive matching, sorting or keeping only the duplicated lines. Runs on smart-tools.xyz.
Can't be undone 11Claude Code: ask
angle_converterConvert a value between angle units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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_converterConvert a value between area units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
data_converterConvert a value between data units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
energy_converterConvert a value between energy units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
length_converterConvert a value between length units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
pressure_converterConvert a value between pressure units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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 mercury). Calculation runs on smart-tools.xyz.
speed_converterConvert a value between speed units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
temperature_converterConvert a value between temperature units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it Convert a value between temperature units. Units: °C (Celsius), °F (Fahrenheit), K (Kelvin), °R (Rankine). Calculation runs on smart-tools.xyz.
time_converterConvert a value between time units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
volume_converterConvert a value between volume units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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 (US fluid ounce). Calculation runs on smart-tools.xyz.
weight_converterConvert a value between weight units.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it 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.
Changes things 58Claude Code: ask
age_calculatorExact age in years, months and days between a birth date and a reference date (default: today).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Exact age in years, months and days between a birth date and a reference date (default: today). Runs on smart-tools.xyz.
aspect_ratio_calculatorSimplify a width×height ratio and scale to a new width or height.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Simplify a width×height ratio and scale to a new width or height. Runs on smart-tools.xyz.
base64Encode text to Base64 or decode Base64 back to text, UTF-8 safe, with an optional URL-safe alphabet.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_calculatorBody Mass Index and category.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_calculatorBasal metabolic rate (Mifflin–St Jeor) and daily calories (TDEE = BMR × activity).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Basal metabolic rate (Mifflin–St Jeor) and daily calories (TDEE = BMR × activity). Runs on smart-tools.xyz.
body_fat_calculatorBody fat percentage by the US Navy (Hodgdon–Beckett) method, metric measurements in cm.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Body fat percentage by the US Navy (Hodgdon–Beckett) method, metric measurements in cm. Females require hip_cm. Runs on smart-tools.xyz.
case_converterConvert text to UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it Convert text to UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE. Runs on smart-tools.xyz.
color_converterConvert a color between HEX, RGB and HSL.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it Convert a color between HEX, RGB and HSL. Accepts #hex, rgb()/rgba(), hsl()/hsla(). Runs on smart-tools.xyz.
compound_interest_calculatorFuture balance and interest earned: A = P(1 + r/n)^(nt).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Future balance and interest earned: A = P(1 + r/n)^(nt). Runs on smart-tools.xyz.
cron_parserParse a 5-field cron expression (minute hour day-of-month month day-of-week) into a plain-English description.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
csv_to_jsonParse CSV/TSV text (auto-detecting tab, semicolon or comma delimiter) with a header row into an array of JSON objects.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_sqlTurn CSV/TSV rows into SQL INSERT statements with standard double-quoted identifiers and escaped values.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Turn CSV/TSV rows into SQL INSERT statements with standard double-quoted identifiers and escaped values. Runs on smart-tools.xyz.
date_difference_calculatorDifference between two dates: calendar years/months/days, total days, weeks and weekday count.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Difference between two dates: calendar years/months/days, total days, weeks and weekday count. Runs on smart-tools.xyz.
discount_calculatorFinal price after one or two successive discounts, plus amount saved.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Final price after one or two successive discounts, plus amount saved. Runs on smart-tools.xyz.
due_date_calculatorEstimated due date by Naegele's rule (+280 days from last period, adjusted for cycle length).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Estimated due date by Naegele's rule (+280 days from last period, adjusted for cycle length). Runs on smart-tools.xyz.
electricity_cost_calculatorRunning cost of an appliance per day, month and year from its wattage.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Running cost of an appliance per day, month and year from its wattage. Runs on smart-tools.xyz.
file_hashCompute a SHA-1/256/384/512 hex checksum of provided text or base64 bytes.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Compute a SHA-1/256/384/512 hex checksum of provided text or base64 bytes. Runs on smart-tools.xyz.
fraction_calculatorExact arithmetic on two fractions (a/b op c/d), reduced to lowest terms.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Exact arithmetic on two fractions (a/b op c/d), reduced to lowest terms. op is one of + - * /. Runs on smart-tools.xyz.
fuel_cost_calculatorFuel needed and trip cost.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Fuel needed and trip cost. system=metric: distance km, consumption L/100km. system=imperial: distance miles, consumption mpg. Runs on smart-tools.xyz.
gitignore_generatorBuild a .gitignore from curated templates for Node, Python, Go, Rust, macOS, VS Code and more.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Build a .gitignore from curated templates for Node, Python, Go, Rust, macOS, VS Code and more. Runs on smart-tools.xyz.
gpa_calculatorWeighted grade point average from letter grades (US 4.0 scale, +/-) or numeric grade points and credit hours.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Weighted grade point average from letter grades (US 4.0 scale, +/-) or numeric grade points and credit hours. Runs on smart-tools.xyz.
gradient_generatorBuild a CSS linear or radial gradient background declaration from two or more colors.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Build a CSS linear or radial gradient background declaration from two or more colors. Runs on smart-tools.xyz.
hash_generatorHash text with SHA-1, SHA-256, SHA-384 or SHA-512 (hex, over UTF-8 bytes).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_converterConvert a height between centimetres and feet/inches.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it 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_calculatorTime worked between two clock times (handles overnight), minus a break, with optional pay.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Time worked between two clock times (handles overnight), minus a break, with optional pay. Times as HH:MM. Runs on smart-tools.xyz.
htaccess_generatorGenerate Apache .htaccess rules: force HTTPS, www redirect, caching, gzip, hotlink protection and more.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate Apache .htaccess rules: force HTTPS, www redirect, caching, gzip, hotlink protection and more. Runs on smart-tools.xyz.
html_entitiesEscape the five special HTML characters (optionally all non-ASCII) or decode named and numeric HTML entities back to text.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_weight_calculatorHealthy weight range (BMI 18.5–24.9) plus Devine, Robinson, Miller and Hamwi formula estimates, from height in cm.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
jwt_decoderDecode a JSON Web Token's header and payload (base64url).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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_fixerFix text typed in the wrong keyboard layout between English QWERTY and Ukrainian ЙЦУКЕН.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Fix text typed in the wrong keyboard layout between English QWERTY and Ukrainian ЙЦУКЕН. Runs on smart-tools.xyz.
loan_calculatorMonthly payment, total repayment and interest for an amortising loan (annuity formula).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Monthly payment, total repayment and interest for an amortising loan (annuity formula). Runs on smart-tools.xyz.
lorem_ipsumGenerate placeholder lorem ipsum text by paragraphs, sentences or words.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate placeholder lorem ipsum text by paragraphs, sentences or words. Runs on smart-tools.xyz.
margin_calculatorProfit, margin (share of price) and markup (share of cost) from cost and selling price.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Profit, margin (share of price) and markup (share of cost) from cost and selling price. Runs on smart-tools.xyz.
markdown_tableBuild a padded GitHub-flavored Markdown table from CSV/TSV text (first row is the header).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Build a padded GitHub-flavored Markdown table from CSV/TSV text (first row is the header). Runs on smart-tools.xyz.
meta_tag_generatorGenerate SEO, Open Graph and Twitter Card HTML meta tags for a page.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate SEO, Open Graph and Twitter Card HTML meta tags for a page. Runs on smart-tools.xyz.
mortgage_calculatorMonthly mortgage payment including optional down payment, property tax and insurance (PITI).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Monthly mortgage payment including optional down payment, property tax and insurance (PITI). Runs on smart-tools.xyz.
number_baseConvert an integer between bases 2–36 (binary, octal, decimal, hex and more), exact for 64-bit values via BigInt.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it 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.
pace_calculatorRunning pace per km and per mile, plus speed, from distance and time.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Running pace per km and per mile, plus speed, from distance and time. Runs on smart-tools.xyz.
password_generatorGenerate a cryptographically strong random password with configurable length and character sets.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate a cryptographically strong random password with configurable length and character sets. Runs on smart-tools.xyz.
percentage_calculatorPercentage operations.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
random_number_generatorGenerate cryptographically random integers in a range, optionally unique and sorted.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate cryptographically random integers in a range, optionally unique and sorted. Runs on smart-tools.xyz.
regex_testerTest a JavaScript regular expression against text and return every match with its captured groups.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Test a JavaScript regular expression against text and return every match with its captured groups. Runs on smart-tools.xyz.
robots_txt_generatorBuild a robots.txt: allow or block all, custom disallow paths, AI-crawler blocking, crawl-delay and sitemap.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Build a robots.txt: allow or block all, custom disallow paths, AI-crawler blocking, crawl-delay and sitemap. Runs on smart-tools.xyz.
salary_calculatorConvert pay between hourly, daily, weekly, biweekly, monthly and annual.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it Convert pay between hourly, daily, weekly, biweekly, monthly and annual. Runs on smart-tools.xyz.
scientific_calculatorEvaluate a math expression with correct order of operations: + - * / % ^, parentheses, and functions (sqrt, sin, cos, tan, ln, log, exp, min, max, factorial via !).No findings
Why it is in this group
- The description's first verb is "evaluate": a word for a change.
Description, as the server wrote it 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. Runs on smart-tools.xyz.
slug_generatorTurn text (incl.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
standard_deviation_calculatorMean, variance and standard deviation (both sample and population) of a list of numbers.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Mean, variance and standard deviation (both sample and population) of a list of numbers. Runs on smart-tools.xyz.
subnet_calculatorIPv4 subnet details: network, broadcast, mask, wildcard, host range and count for an IP and prefix.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it IPv4 subnet details: network, broadcast, mask, wildcard, host range and count for an IP and prefix. Runs on smart-tools.xyz.
table_to_csvConvert a pasted HTML <table> or delimited (tab/semicolon/comma) table into clean CSV.No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it Convert a pasted HTML <table> or delimited (tab/semicolon/comma) table into clean CSV. Runs on smart-tools.xyz.
timestamp_converterConvert between a Unix timestamp and an ISO 8601 date (UTC).No findings
Why it is in this group
- The description's first verb is "convert": a word for a change.
Description, as the server wrote it 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.
tip_calculatorTip amount, total and per-person split for a bill.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Tip amount, total and per-person split for a bill. Runs on smart-tools.xyz.
transliterationTransliterate Ukrainian Cyrillic to Latin by the official KMU #55 passport standard.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Transliterate Ukrainian Cyrillic to Latin by the official KMU #55 passport standard. Runs on smart-tools.xyz.
triangle_calculatorSolve a triangle.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
url_encoderPercent-encode or decode a URL.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
utm_builderAppend encoded UTM campaign parameters to a URL, preserving any existing query and fragment.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it Append encoded UTM campaign parameters to a URL, preserving any existing query and fragment. Runs on smart-tools.xyz.
uuid_generatorGenerate one or more random version 4 (RFC 4122) UUIDs.No findings
Why it is in this group
- The description's first verb is "generate": a word for a change.
Description, as the server wrote it Generate one or more random version 4 (RFC 4122) UUIDs. Runs on smart-tools.xyz.
vat_calculatorAdd VAT to a net amount or remove it from a gross amount.No findings
Why it is in this group
- The description's first verb is "add": a word for a change.
Description, as the server wrote it Add VAT to a net amount or remove it from a gross amount. Runs on smart-tools.xyz.
wcag_contrast_checkerCompute the WCAG 2.x contrast ratio between two hex colors and whether it passes AA/AAA for normal and large text.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it 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.
Only reads 4Claude Code: allow
json_formatterValidate and pretty-print or minify JSON, reporting the line and column on a parse error.No findings
Why it is in this group
- The description's first verb is "validate": a word for reading.
Description, as the server wrote it Validate and pretty-print or minify JSON, reporting the line and column on a parse error. Runs on smart-tools.xyz.
text_counterCount characters (with and without spaces), words, lines, paragraphs and estimated reading time.No findings
Why it is in this group
- The description's first verb is "count": a word for reading.
Description, as the server wrote it Count characters (with and without spaces), words, lines, paragraphs and estimated reading time. Runs on smart-tools.xyz.
text_diffLine-level diff of two texts (LCS): counts of added/removed lines plus a marked-up line list.No findings
Why it is in this group
- The name "text_diff" says "diff": a word for reading.
Description, as the server wrote it Line-level diff of two texts (LCS): counts of added/removed lines plus a marked-up line list. Runs on smart-tools.xyz.
unit_price_calculatorCompare price per unit of two packs and report which is cheaper.No findings
Why it is in this group
- The description's first verb is "compare": a word for reading.
Description, as the server wrote it Compare price per unit of two packs and report which is cheaper. Runs on smart-tools.xyz.
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http smart-tools https://smart-tools.xyz/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__smart-tools__unit_price_calculator",
"mcp__smart-tools__text_counter",
"mcp__smart-tools__text_diff",
"mcp__smart-tools__json_formatter"
],
"ask": [
"mcp__smart-tools__length_converter",
"mcp__smart-tools__weight_converter",
"mcp__smart-tools__temperature_converter",
"mcp__smart-tools__area_converter",
"mcp__smart-tools__volume_converter",
"mcp__smart-tools__speed_converter",
"mcp__smart-tools__pressure_converter",
"mcp__smart-tools__angle_converter",
"mcp__smart-tools__energy_converter",
"mcp__smart-tools__data_converter",
"mcp__smart-tools__time_converter",
"mcp__smart-tools__loan_calculator",
"mcp__smart-tools__mortgage_calculator",
"mcp__smart-tools__compound_interest_calculator",
"mcp__smart-tools__vat_calculator",
"mcp__smart-tools__tip_calculator",
"mcp__smart-tools__discount_calculator",
"mcp__smart-tools__percentage_calculator",
"mcp__smart-tools__salary_calculator",
"mcp__smart-tools__margin_calculator",
"mcp__smart-tools__fuel_cost_calculator",
"mcp__smart-tools__electricity_cost_calculator",
"mcp__smart-tools__bmi_calculator",
"mcp__smart-tools__bmr_calculator",
"mcp__smart-tools__body_fat_calculator",
"mcp__smart-tools__ideal_weight_calculator",
"mcp__smart-tools__due_date_calculator",
"mcp__smart-tools__age_calculator",
"mcp__smart-tools__date_difference_calculator",
"mcp__smart-tools__hours_calculator",
"mcp__smart-tools__aspect_ratio_calculator",
"mcp__smart-tools__standard_deviation_calculator",
"mcp__smart-tools__fraction_calculator",
"mcp__smart-tools__triangle_calculator",
"mcp__smart-tools__pace_calculator",
"mcp__smart-tools__subnet_calculator",
"mcp__smart-tools__color_converter",
"mcp__smart-tools__gpa_calculator",
"mcp__smart-tools__scientific_calculator",
"mcp__smart-tools__height_converter",
"mcp__smart-tools__base64",
"mcp__smart-tools__case_converter",
"mcp__smart-tools__html_entities",
"mcp__smart-tools__url_encoder",
"mcp__smart-tools__slug_generator",
"mcp__smart-tools__lorem_ipsum",
"mcp__smart-tools__number_base",
"mcp__smart-tools__timestamp_converter",
"mcp__smart-tools__transliteration",
"mcp__smart-tools__uuid_generator",
"mcp__smart-tools__hash_generator",
"mcp__smart-tools__jwt_decoder",
"mcp__smart-tools__cron_parser",
"mcp__smart-tools__regex_tester",
"mcp__smart-tools__layout_fixer",
"mcp__smart-tools__wcag_contrast_checker",
"mcp__smart-tools__csv_to_json",
"mcp__smart-tools__csv_to_sql",
"mcp__smart-tools__table_to_csv",
"mcp__smart-tools__markdown_table",
"mcp__smart-tools__gitignore_generator",
"mcp__smart-tools__gradient_generator",
"mcp__smart-tools__htaccess_generator",
"mcp__smart-tools__meta_tag_generator",
"mcp__smart-tools__random_number_generator",
"mcp__smart-tools__robots_txt_generator",
"mcp__smart-tools__utm_builder",
"mcp__smart-tools__file_hash",
"mcp__smart-tools__password_generator"
],
"deny": [
"mcp__smart-tools__remove_duplicates"
]
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as smart-tools. Review it before you use it.