TinyFn

io.tinyfnPublished by tinyfn.ioOfficial publisherv1.0.2Updated Oct 24, 2026

500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time.

VerifiedStreamable HTTPWeb executableDeveloper Tools Data & Analytics

Server details

Identifier: io.tinyfn/tinyfn
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to tinyfn.io, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

TinyFn is a remote MCP server giving an assistant 500+ deterministic tools for math, conversions, validation, hashing, encoding, dates and statistics.

What you can do: Check and compute numbers: primality, parity, factorials, Fibonacci, GCD/LCM, powers, roots, logs, trigonometry, rounding and ranges, plus basic arithmetic and min/max/average of lists. Convert units and formats: temperature, length, weight, volume, speed, data sizes, number bases and color values. Validate input: email, URL, phone, credit card, UUID, IP, JSON, date, hex and Base64. Hash and encode: MD5, SHA-256/512, SHA-3, BLAKE2, HMAC, CRC32, Base64, URL, HTML, hex, JWT decoding, ROT13 and Morse. Work with dates and statistics: date parsing, diffs, timezone conversion, leap years, mean, median, mode, variance, percentiles and correlation. Generate values: UUIDs, passwords, tokens, random/l
When to use it: Useful when an assistant must produce exact arithmetic, unit or color conversions, format validation, hashes, encodings or date calculations instead of estimating them, especially in coding, data analysis, DevOps and content workflows.
Requirements: A remote endpoint at api.tinyfn.io; no local install. A TinyFn API key sent in the X-API-Key header, obtained free from the vendor's site. Category-specific endpoints exist for clients with tool limits, and URLs must end with a trailing slash. Network access required.

Before you install

Every call goes to a third-party service and counts against a quota: the free tier is 100 requests per month at 10 per minute, with paid plans above that. The API key is a secret and should be kept out of shared configs. Hash, encoding and JWT tools process the text you send to the remote server, so avoid sending secrets or sensitive data.

Installation

In SourceWeft

Open TinyFn in the dashboard and add it to a workspace.
Connect X-API-Key credentials. They are stored privately and never shown on public pages.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.tinyfn%2Ftinyfn/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "tinyfn": {
      "type": "http",
      "url": "https://api.tinyfn.io/mcp/all/",
      "headers": {
        "X-API-Key": "<YOUR_API_KEY>"
      }
    }
  }
}

README

[TinyFn]

TinyFn MCP Server

🧮 Give your AI agent 500+ deterministic tools
Stop hallucinating math. Start getting correct answers.

[License] [Docs] [Smithery]

Quick Start • Servers • Examples • Pricing • Docs • Support

[TinyFn — 500+ Deterministic Tools for AI Agents]

The Problem

LLMs are great at reasoning. They're terrible at math.

Ask any AI assistant to compute 17% of 4,847 and you'll get a confident, wrong answer. Ask it to validate an email with regex, generate a SHA-256 hash, or convert timezones — same story. LLMs hallucinate on deterministic tasks.

TinyFn is a Model Context Protocol (MCP) server that gives your AI assistant 500+ tools that always return the correct answer. Math, conversions, validations, hashing, date arithmetic — the boring stuff, done right.

[TinyFn in action — your agent sucks at counting]

🖥️ Works With Your Tools

TinyFn runs as a remote MCP server — no npx, no Docker, no local install. Just add the URL to your config.

Platform	Tool Limit	Recommended Setup	Config Location
Claude Code	500+ (Tool Search)	`/mcp/all/` — use everything	`~/.claude/settings.json`
Claude Desktop	~100 tools	2–3 category servers	`~/Library/Application Support/Claude/claude_desktop_config.json`
Cursor	~40 tools	1–2 focused servers	Cursor MCP settings
Windsurf	~40 tools	1–2 focused servers	Windsurf MCP settings
Continue.dev	Varies	Category servers	`.continue/config.json`
Any MCP Client	Varies	Match to your tool limit	Client-specific

💡 Why category servers? Most AI clients limit the number of tools. TinyFn splits 500+ tools across 12 focused servers so you can pick exactly what you need.

✅ Example Queries That Just Work

Once connected, just ask your AI assistant in plain language:

Math & Numbers

✅ "Is 7919 a prime number?"
✅ "What's 17% of 4,847?"
✅ "Calculate the factorial of 12"

Conversions

✅ "Convert 72°F to Celsius"
✅ "How many miles is 100 kilometers?"
✅ "Convert #3B82F6 to RGB values"

Validation

✅ "Is [email protected] a valid email address?"
✅ "Validate this credit card number: 4111111111111111"
✅ "Is 550e8400-e29b-41d4-a716-446655440000 a valid UUID?"

Encoding & Hashing

✅ "Base64 encode 'Hello, World!'"
✅ "Generate a SHA-256 hash of 'my-secret-string'"
✅ "URL encode 'hello world & goodbye'"

Date & Time

✅ "How many days between January 15 and March 22?"
✅ "What's the current Unix timestamp?"
✅ "Is 2024 a leap year?"

Generators

✅ "Generate a UUID"
✅ "Create a secure 20-character password"
✅ "Roll 3 six-sided dice"

⚡ Quick Start

1. Get your free API key at tinyfn.io (takes 10 seconds)

2. Add TinyFn to your MCP client:

Claude Code

Claude Code supports Tool Search, so you can use the full server with all 500+ tools:

json

{  "mcpServers": {    "tinyfn": {      "url": "https://api.tinyfn.io/mcp/all/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

{  "mcpServers": {    "tinyfn": {      "url": "https://api.tinyfn.io/mcp/all/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

Add this to ~/.claude/settings.json or use claude mcp add.

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

json

{  "mcpServers": {    "tinyfn-math": {      "url": "https://api.tinyfn.io/mcp/math/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    },    "tinyfn-validate": {      "url": "https://api.tinyfn.io/mcp/validate/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

{  "mcpServers": {    "tinyfn-math": {      "url": "https://api.tinyfn.io/mcp/math/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    },    "tinyfn-validate": {      "url": "https://api.tinyfn.io/mcp/validate/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

Tip: Claude Desktop supports ~100 tools. Add 2–3 category servers based on your workflow.

Cursor & Windsurf

These platforms have a ~40 tool limit. Pick 1–2 focused servers:

json

{  "mcpServers": {    "tinyfn-validate": {      "url": "https://api.tinyfn.io/mcp/validate/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

{  "mcpServers": {    "tinyfn-validate": {      "url": "https://api.tinyfn.io/mcp/validate/",      "headers": {        "X-API-Key": "tf_live_YOUR_KEY_HERE"      }    }  }}

Recommended for Cursor/Windsurf: validate (15 tools), hash (18 tools), encode (20 tools), convert (42 tools).

Continue.dev

json

{  "experimental": {    "mcpServers": [      {        "name": "tinyfn-math",        "url": "https://api.tinyfn.io/mcp/math/",        "headers": {          "X-API-Key": "tf_live_YOUR_KEY_HERE"        }      }    ]  }}

{  "experimental": {    "mcpServers": [      {        "name": "tinyfn-math",        "url": "https://api.tinyfn.io/mcp/math/",        "headers": {          "X-API-Key": "tf_live_YOUR_KEY_HERE"        }      }    ]  }}

3. Start asking questions. Your AI now has deterministic tools for math, conversions, validation, and more.

📡 Available MCP Servers

All servers use base URL https://api.tinyfn.io. Pick the categories you need:

Server	Endpoint	Tools	What It Does
All	`/mcp/all/`	500+	Everything — best for Claude Code
Math	`/mcp/math/`	52	Arithmetic, trig, primes, factorials, comparisons
Convert	`/mcp/convert/`	42	Temperature, length, weight, volume, speed, data sizes
String	`/mcp/string/`	33	Case conversion, slugify, trim, word count, extraction
Datetime	`/mcp/datetime/`	24	Date parsing, formatting, diffs, timezones, leap years
Encode	`/mcp/encode/`	20	Base64, URL, HTML, hex, ROT13, morse, JWT decode
Hash	`/mcp/hash/`	18	MD5, SHA-256, SHA-512, HMAC, bcrypt, CRC32
Color	`/mcp/color/`	30	HEX/RGB/HSL conversion, gradients, contrast, palettes
Stats	`/mcp/stats/`	16	Mean, median, mode, std dev, percentiles, correlation
Validate	`/mcp/validate/`	15	Email, URL, phone, credit card, UUID, IP, JSON, dates
Finance	`/mcp/finance/`	15	Interest, loans, mortgage, ROI, margin, tip calculator
Generate	`/mcp/generate/`	15	UUIDs, passwords, random numbers, lorem ipsum, dice

⚠️ Important: All URLs must end with a trailing / or requests will return 404 errors.

🛠️ Tool Categories

🔢 Math & Numbers — 52 tools

Tool	Description	Example
`add`, `subtract`, `multiply`, `divide`	Basic arithmetic	`add(17, 25)` → `42`
`percentage`	Percentage calculation	`percentage(17, 4847)` → `823.99`
`is_prime`	Primality testing	`is_prime(7919)` → `true`
`factorial`	Factorial calculation	`factorial(12)` → `479001600`
`fibonacci`	Nth Fibonacci number	`fibonacci(10)` → `55`
`gcd`, `lcm`	GCD and LCM	`gcd(48, 18)` → `6`
`power`, `square_root`	Exponentiation	`square_root(144)` → `12`
`sin`, `cos`, `tan`	Trigonometric functions	`sin(1.5708)` → `1.0`
`log`, `log10`, `log2`	Logarithms	`log10(1000)` → `3`
`floor`, `ceil`, `round_number`	Rounding	`ceil(4.2)` → `5`
`absolute_value`, `sign`	Number properties	`sign(-42)` → `-1`
`clamp`, `distance`, `hypotenuse`	Range & geometry	`hypotenuse(3, 4)` → `5`

📝 String Operations — 33 tools

Tool	Description	Example
`reverse_string`	Reverse text	`reverse_string("hello")` → `"olleh"`
`uppercase`, `lowercase`	Case conversion	`uppercase("hello")` → `"HELLO"`
`camel_case`, `snake_case`, `kebab_case`	Naming conventions	`snake_case("helloWorld")` → `"hello_world"`
`slug`	URL-safe slugs	`slug("Hello World!")` → `"hello-world"`
`trim`, `pad`	Whitespace handling	`trim(" hi ")` → `"hi"`
`word_count`, `string_length`	Text metrics	`word_count("hello world")` → `2`
`contains`, `starts_with`, `ends_with`	String matching	`contains("hello", "ell")` → `true`
`split`, `join`	Array operations	`split("a,b,c", ",")` → `["a","b","c"]`
`extract_emails`, `extract_urls`	Content extraction	Extract emails from text blocks
`is_palindrome`	Palindrome check	`is_palindrome("racecar")` → `true`
`count_char`, `count_substring`	Character counting	`count_char("hello", "l")` → `2`

✅ Validation — 15 tools

Tool	Description	Example
`validate_email`	Email format validation	`validate_email("[email protected]")` → `true`
`validate_url`	URL format validation	`validate_url("https://tinyfn.io")` → `true`
`validate_phone`	Phone number validation	`validate_phone("+1-555-123-4567")` → `true`
`validate_credit_card`	Luhn algorithm check	`validate_credit_card("4111111111111111")` → `true`
`validate_uuid`	UUID format validation	`validate_uuid("550e8400-e29b-41d4-a716-446655440000")` → `true`
`validate_ip`	IPv4/IPv6 validation	`validate_ip("192.168.1.1")` → `true`
`validate_json`	JSON syntax validation	`validate_json('{"key": "value"}')` → `true`
`validate_date`	Date format validation	`validate_date("2024-02-29")` → `true`
`validate_hex`	Hex string validation	`validate_hex("1a2b3c")` → `true`
`validate_base64`	Base64 validation	`validate_base64("SGVsbG8=")` → `true`

🔄 Conversions — 42 tools

Tool	Description	Example
`celsius_to_fahrenheit`	Temperature	`celsius_to_fahrenheit(100)` → `212`
`kilometers_to_miles`	Distance	`kilometers_to_miles(100)` → `62.14`
`kilograms_to_pounds`	Weight	`kilograms_to_pounds(70)` → `154.32`
`liters_to_gallons_us`	Volume	`liters_to_gallons_us(3.785)` → `1.0`
`hex_to_rgb`	Color	`hex_to_rgb("#3B82F6")` → `{r:59, g:130, b:246}`
`decimal_to_binary`	Base conversion	`decimal_to_binary(42)` → `"101010"`
`bytes_to_human`	File sizes	`bytes_to_human(1073741824)` → `"1 GB"`
`mph_to_kph`	Speed	`mph_to_kph(60)` → `96.56`
`inches_to_centimeters`	Length	`inches_to_centimeters(12)` → `30.48`
`hours_to_minutes`	Time	`hours_to_minutes(2.5)` → `150`

🔐 Hashing — 18 tools

Tool	Description	Example
`hash_md5`	MD5 hash	`hash_md5("hello")` → `"5d41402abc4b..."`
`hash_sha256`	SHA-256 hash	`hash_sha256("hello")` → `"2cf24dba5fb0..."`
`hash_sha512`	SHA-512 hash	Full 128-char hex digest
`hmac_sha256`	HMAC signature	Keyed hash authentication
`hash_sha3_256`, `hash_sha3_512`	SHA-3 family	Modern hash algorithms
`hash_blake2b`, `hash_blake2s`	BLAKE2	High-performance hashing
`hash_crc32`	CRC32 checksum	Error detection codes
`compare_hashes`	Timing-safe compare	Constant-time hash comparison
`identify_hash`	Hash identification	Detect hash algorithm from string

🔑 Encoding — 20 tools

Tool	Description	Example
`base64_encode`, `base64_decode`	Base64	`base64_encode("Hello")` → `"SGVsbG8="`
`url_encode`, `url_decode`	URL encoding	`url_encode("hello world")` → `"hello%20world"`
`html_encode`, `html_decode`	HTML entities	`html_encode("<div>")` → `"<div>"`
`hex_encode`, `hex_decode`	Hex encoding	`hex_encode("hi")` → `"6869"`
`jwt_decode`	JWT parsing	Decode JWT payload (no verification)
`rot13`	ROT13 cipher	`rot13("hello")` → `"uryyb"`
`morse_encode`, `morse_decode`	Morse code	`morse_encode("SOS")` → `"... --- ..."`
`json_minify`, `json_prettify`	JSON formatting	Minify or pretty-print JSON

📅 Date & Time — 24 tools

Tool	Description	Example
`get_now`	Current timestamp	ISO 8601 timestamp
`format_date`, `parse_date`	Date formatting	Parse and format dates
`date_diff`	Days between dates	`date_diff("2024-01-15", "2024-03-22")` → `67 days`
`add_time`, `subtract_time`	Date arithmetic	Add/subtract days, hours, minutes
`convert_timezone`	Timezone conversion	Convert between any IANA timezones
`is_leap_year`	Leap year check	`is_leap_year(2024)` → `true`
`calculate_age`	Age from birthdate	Calculate exact age
`relative_time`	Relative formatting	`"2 hours ago"`, `"in 3 days"`
`days_in_month`	Month length	`days_in_month(2, 2024)` → `29`
`is_weekend`	Weekend check	Check if a date falls on Sat/Sun

🎲 Generators — 15 tools

Tool	Description	Example
`generate_uuid`	UUID v4	`"550e8400-e29b-41d4-a716-446655440000"`
`generate_uuid_v7`	UUID v7 (time-sortable)	Timestamp-based UUIDs
`generate_password`	Secure passwords	Configurable length and character sets
`random_number`	Random integers	`random_number(1, 100)` → `42`
`random_string`	Random strings	Configurable length and charset
`generate_token`	API tokens	Cryptographically secure tokens
`generate_lorem`	Lorem ipsum	Generate placeholder text
`generate_color`	Random colors	Random hex color codes
`roll_dice`	Dice rolling	`roll_dice(3, 6)` → `[4, 2, 6]`
`flip_coin`	Coin flip	`"heads"` or `"tails"`
`shuffle_list`	Shuffle arrays	Randomize array order

🎨 Colors — 30 tools

Tool	Description	Example
`hex_to_hsl`, `hsl_to_hex`	Color space conversion	Convert between formats
`hex_to_rgb`, `rgb_to_hex`	RGB conversion	`hex_to_rgb("#FF5733")` → `{r:255,g:87,b:51}`
`lighten_color`, `darken_color`	Brightness adjustment	Lighten/darken by percentage
`complement_color`	Complementary colors	Get the opposite color
`triadic_colors`, `analogous_colors`	Color harmonies	Generate color schemes
`contrast_ratio`	WCAG contrast	Check accessibility compliance
`generate_gradient`	Gradient generation	Generate color stops between two colors
`generate_shades`, `generate_tints`	Shade/tint ramps	Create monochromatic palettes
`invert_color`	Color inversion	Invert any hex color
`blend_colors`	Color blending	Mix two colors together

📊 Statistics — 16 tools

Tool	Description	Example
`calculate_mean`	Arithmetic mean	`calculate_mean([10, 20, 30])` → `20`
`calculate_median`	Median value	`calculate_median([1, 3, 5, 7])` → `4`
`calculate_mode`	Most frequent value	`calculate_mode([1, 2, 2, 3])` → `2`
`calculate_variance`	Population variance	Statistical variance
`calculate_stddev`	Standard deviation	Statistical spread
`calculate_percentile`	Percentile calculation	`calculate_percentile([1..100], 95)` → `95`
`calculate_quartiles`	Q1, Q2, Q3	Quartile boundaries
`calculate_correlation`	Pearson correlation	Correlation coefficient between datasets
`calculate_zscore`	Z-score	Standard score calculation
`describe_data`	Summary statistics	Full statistical description of a dataset

💰 Finance — 15 tools

Tool	Description	Example
`compound_interest`	Compound interest	Calculate future value with compounding
`simple_interest`	Simple interest	Basic interest calculation
`loan_payment`	Loan payments	Monthly payment calculator
`mortgage_calculator`	Mortgage	Monthly mortgage with amortization
`calculate_tip`	Tip calculator	`calculate_tip(85.50, 20)` → `$17.10`
`percentage_change`	Growth/decline	`percentage_change(100, 125)` → `25%`
`calculate_markup`, `calculate_margin`	Pricing	Markup and margin calculations
`calculate_discount`	Discounts	Price after discount
`return_on_investment`	ROI	Investment return percentage
`rule_of_72`	Doubling time	Years to double an investment
`break_even`	Break-even analysis	Units needed to break even

🏃 Health & Fitness — 10 tools

Tool	Description	Example
`calculate_bmi`	Body Mass Index	`calculate_bmi(70, 1.75)` → `22.86`
`calculate_bmr`	Basal Metabolic Rate	Daily calorie baseline
`ideal_weight`	Ideal weight range	Based on height and frame
`heart_rate_zones`	Training zones	Fat burn, cardio, peak zones
`estimate_body_fat`	Body fat estimate	Navy method estimation
`daily_water_intake`	Water recommendation	Based on weight and activity
`calories_burned`	Exercise calories	Calories for activity type and duration
`calculate_macros`	Macro split	Protein/carb/fat breakdown
`sleep_cycles`	Sleep optimization	Optimal wake times based on cycles

🎭 Fun — 10 tools

Tool	Description	Example
`magic_8_ball`	Magic 8-Ball	Random mystical answers
`dad_joke`	Dad jokes	Guaranteed groan
`fortune_cookie`	Fortune cookies	Random fortune messages
`random_compliment`	Compliments	Brighten someone's day
`random_excuse`	Excuses	Creative excuse generator
`would_you_rather`	Would You Rather	Random dilemmas
`friendly_roast`	Friendly roasts	Light-hearted roasts
`random_trivia`	Trivia	Random trivia facts
`yes_no`	Yes/No oracle	Random yes or no

🎯 Perfect For

AI-Assisted Development — Cursor and Windsurf users who need reliable math in their coding workflow
Data Analysis — Statistics, percentiles, and financial calculations without second-guessing
Content Creation — Word counts, slugification, and encoding when building with AI
DevOps & Security — Hash generation, UUID creation, and input validation
Education — Teach with tools that demonstrate correct mathematical results
API Development — Validate inputs, generate test data, and compute values during development

💰 Pricing

Free

Starter

Pro

Enterprise

$0_/mo

100 requests

✅ All 500+ tools
✅ MCP & REST API
✅ 10 req/min rate limit
✅ Community support

$9_/mo

10,000 requests

✅ Everything in Free
✅ 100 req/min rate limit
✅ Email support
✅ Usage analytics

$30_/mo

100,000 requests

✅ Everything in Starter
✅ 1,000 req/min rate limit
✅ Priority support
✅ Advanced analytics

Custom

Unlimited

✅ Everything in Pro
✅ SLA guarantee
✅ Dedicated support
✅ Custom integrations

_{All plans include access to every tool. Sign up free →}

🔧 Troubleshooting

❌ Getting 404 errors

All MCP server URLs must end with a trailing slash /.

❌ Authentication errors (401/403)

Verify your API key starts with tf_live_
Check that you're using the X-API-Key header (not Authorization)
Make sure your key is active at tinyfn.io/dashboard

❌ Too many tools / client not loading

Your MCP client has a tool limit. Instead of /mcp/all/, use category-specific servers:

See the full server list for all options.

❌ Rate limit exceeded (429)

You've hit your plan's rate limit. Options:

Free tier: 10 requests/minute, 100/month — upgrade at tinyfn.io
Starter: 100 requests/minute, 10,000/month
Check your current usage at tinyfn.io/dashboard

📚 Documentation & Resources

[Docs] [MCP Guide] [API Reference] [Changelog]

MCP Overview — Setup guide for all supported platforms
API Reference — REST API docs for direct HTTP usage
MCP Categories — Detailed breakdown of each server
Authentication — API key setup and management
Rate Limits — Quotas and limits per plan
LLM Context — llms.txt for AI-readable documentation

🤝 Support

📧 Email: [email protected]
🐛 Issues: GitHub Issues
💬 Sales: [email protected]

📄 License

MIT License — see LICENSE for details.

The boring stuff, done right.

Website • Docs • GitHub • Twitter

Source: README.md at commit e9f2d8e

Tools

200

is_even

Check if a number is even.

Parametersnumberrequired

is_odd

Check if a number is odd.

Parametersnumberrequired

is_prime

Check if a number is prime.

Parametersnumberrequired

is_positive

Check if a number is positive.

Parametersnumberrequired

is_negative

Check if a number is negative.

Parametersnumberrequired

is_zero

Check if a number is zero.

Parametersnumberrequired

is_integer

Check if a number is an integer.

Parametersnumberrequired

is_divisible

Check if a number is divisible by another number.

Parametersnumberrequireddivisorrequired

is_perfect_square

Check if a number is a perfect square.

Parametersnumberrequired

is_fibonacci

Check if a number is a Fibonacci number.

Parametersnumberrequired

factorial

Calculate the factorial of a number.

Parametersnumberrequired

fibonacci

Get the nth Fibonacci number.

Parametersnrequired

gcd

Calculate the greatest common divisor.

Parametersarequiredbrequired

lcm

Calculate the least common multiple.

Parametersarequiredbrequired

absolute_value

Get the absolute value of a number.

Parametersnumberrequired

square_root

Calculate the square root of a number.

Parametersnumberrequired

power

Calculate base raised to the power of exponent.

Parametersbaserequiredexponentrequired

percentage

Calculate what percentage value is of total.

Parameterstotalrequiredvaluerequired

average

Calculate the average of a list of numbers.

Parametersnumbersrequired

round_number

Round a number to specified decimal places.

Parametersnumberrequireddecimals

clamp

Clamp a number within a range.

Parametersnumberrequiredmaximumrequiredminimumrequired

distance

Calculate Euclidean distance between two points.

Parametersx1requiredx2requiredy1requiredy2required

sin

Calculate the sine of an angle.

Parametersanglerequired

cos

Calculate the cosine of an angle.

Parametersanglerequired

tan

Calculate the tangent of an angle.

Parametersanglerequired

deg_to_rad

Convert degrees to radians.

Parametersdegreesrequired

rad_to_deg

Convert radians to degrees.

Parametersradiansrequired

add

Add two or more numbers together.

Parametersnumbersrequired

subtract

Subtract b from a.

Parametersarequiredbrequired

multiply

Multiply two or more numbers together.

Parametersnumbersrequired

divide

Divide a by b.

Parametersarequiredbrequired

modulo

Calculate a modulo b (remainder of a divided by b).

Parametersarequiredbrequired

log

Calculate logarithm. Natural log if no base specified.

Parametersbasenumberrequired

log10

Calculate base-10 logarithm.

Parametersnumberrequired

log2

Calculate base-2 logarithm.

Parametersnumberrequired

exp

Calculate e raised to the power of number.

Parametersnumberrequired

floor

Round down to nearest integer.

Parametersnumberrequired

ceil

Round up to nearest integer.

Parametersnumberrequired

minimum

Find the minimum value.

Parametersnumbersrequired

maximum

Find the maximum value.

Parametersnumbersrequired

sum_numbers

Calculate the sum of numbers.

Parametersnumbersrequired

sign

Get the sign of a number (-1, 0, or 1).

Parametersnumberrequired

truncate

Truncate to integer (remove decimal part).

Parametersnumberrequired

hypotenuse

Calculate the hypotenuse of a right triangle.

Parametersarequiredbrequired

cube

Calculate the cube of a number.

Parametersnumberrequired

cube_root

Calculate the cube root of a number.

Parametersnumberrequired

square

Calculate the square of a number.

Parametersnumberrequired

nth_root

Calculate the nth root of a number.

Parametersnrequirednumberrequired

compare

Compare two numbers (e.g., is 0.9 greater than 0.11?).

Parametersarequiredbrequired

compare_decimals

Compare decimal numbers with detailed explanation (handles 0.9 vs 0.11 correctly).

Parametersarequiredbrequired

rank_numbers

Rank a list of numbers from largest to smallest (or vice versa).

Parametersordernumbersrequired

is_between

Check if a number is between two bounds.

Parameterslowerrequiredupperrequirednumberrequiredinclusive

reverse_string

Reverse a string.

Parameterstextrequired

uppercase

Convert text to uppercase.

Parameterstextrequired

lowercase

Convert text to lowercase.

Parameterstextrequired

capitalize

Capitalize the first letter of each word.

Parameterstextrequired

title_case

Convert text to title case.

Parameterstextrequired

sentence_case

Convert text to sentence case.

Parameterstextrequired

camel_case

Convert text to camelCase.

Parameterstextrequired

snake_case

Convert text to snake_case.

Parameterstextrequired

kebab_case

Convert text to kebab-case.

Parameterstextrequired

pascal_case

Convert text to PascalCase.

Parameterstextrequired

string_length

Get the length of a string.

Parameterstextrequired

word_count

Count words in text.

Parameterstextrequired

trim

Trim whitespace from text.

Parameterstextrequired

truncate_2

Truncate text to a specified length.

Parameterstextrequiredlengthsuffix

pad

Pad text to a specified length.

Parameterscharsidetextrequiredlengthrequired

repeat

Repeat text a specified number of times.

Parameterstextrequiredtimesrequiredseparator

replace

Replace occurrences in text.

Parameterstextrequiredsearchrequiredreplacement

contains

Check if text contains a substring.

Parameterstextrequiredsearchrequiredcase_sensitive

starts_with

Check if text starts with a prefix.

Parameterstextrequiredprefixrequired

ends_with

Check if text ends with a suffix.

Parameterstextrequiredsuffixrequired

split

Split text by delimiter.

Parameterstextrequireddelimiter

join

Join items with a delimiter.

Parametersitemsrequireddelimiter

slug

Convert text to URL-friendly slug.

Parameterstextrequired

is_palindrome

Check if text is a palindrome.

Parameterstextrequiredignore_caseignore_spaces

count_char

Count occurrences of a character (e.g., how many 'r' in 'strawberry').

Parameterscharrequiredtextrequiredcase_sensitive

count_substring

Count occurrences of a substring.

Parameterstextrequiredsubstringrequiredoverlappingcase_sensitive

count_all_chars

Count occurrences of each character in text.

Parameterstextrequired

remove_whitespace

Remove all whitespace from text.

Parameterstextrequired

normalize_whitespace

Normalize whitespace (multiple spaces to single).

Parameterstextrequired

is_empty

Check if text is empty or whitespace only.

Parameterstext

extract_numbers

Extract all numbers from text.

Parameterstextrequired

extract_emails

Extract all email addresses from text.

Parameterstextrequired

extract_urls

Extract all URLs from text.

Parameterstextrequired

celsius_to_fahrenheit

Convert Celsius to Fahrenheit.

Parameterscelsiusrequired

fahrenheit_to_celsius

Convert Fahrenheit to Celsius.

Parametersfahrenheitrequired

celsius_to_kelvin

Convert Celsius to Kelvin.

Parameterscelsiusrequired

kelvin_to_celsius

Convert Kelvin to Celsius.

Parameterskelvinrequired

meters_to_feet

Convert meters to feet.

Parametersmetersrequired

feet_to_meters

Convert feet to meters.

Parametersfeetrequired

kilometers_to_miles

Convert kilometers to miles.

Parameterskilometersrequired

miles_to_kilometers

Convert miles to kilometers.

Parametersmilesrequired

inches_to_centimeters

Convert inches to centimeters.

Parametersinchesrequired

centimeters_to_inches

Convert centimeters to inches.

Parameterscentimetersrequired

kilograms_to_pounds

Convert kilograms to pounds.

Parameterskilogramsrequired

pounds_to_kilograms

Convert pounds to kilograms.

Parameterspoundsrequired

ounces_to_grams

Convert ounces to grams.

Parametersouncesrequired

grams_to_ounces

Convert grams to ounces.

Parametersgramsrequired

stone_to_kilograms

Convert stone to kilograms.

Parametersstonerequired

liters_to_gallons_us

Convert liters to US gallons.

Parameterslitersrequired

gallons_us_to_liters

Convert US gallons to liters.

Parametersgallonsrequired

liters_to_gallons_uk

Convert liters to UK gallons. Because a UK gallon isn't a US gallon.

Parameterslitersrequired

gallons_uk_to_liters

Convert UK gallons to liters.

Parametersgallonsrequired

milliliters_to_fluid_ounces

Convert milliliters to US fluid ounces.

Parametersmillilitersrequired

cups_to_milliliters

Convert US cups to milliliters.

Parameterscupsrequired

milliliters_to_cups

Convert milliliters to US cups.

Parametersmillilitersrequired

square_meters_to_square_feet

Convert square meters to square feet.

Parameterssquare_metersrequired

square_feet_to_square_meters

Convert square feet to square meters.

Parameterssquare_feetrequired

acres_to_hectares

Convert acres to hectares.

Parametersacresrequired

mph_to_kph

Convert miles per hour to kilometers per hour.

Parametersmphrequired

kph_to_mph

Convert kilometers per hour to miles per hour.

Parameterskphrequired

meters_per_second_to_mph

Convert meters per second to miles per hour.

Parametersmpsrequired

knots_to_kph

Convert knots to kilometers per hour.

Parametersknotsrequired

bytes_to_human

Convert bytes to human-readable format.

Parametersbytes_valrequired

kilobytes_to_megabytes

Convert kilobytes to megabytes.

Parameterskilobytesrequired

megabytes_to_gigabytes

Convert megabytes to gigabytes.

Parametersmegabytesrequired

decimal_to_binary

Convert decimal to binary.

Parametersnumberrequired

binary_to_decimal

Convert binary to decimal.

Parametersbinaryrequired

decimal_to_hexadecimal

Convert decimal to hexadecimal.

Parametersnumberrequired

hexadecimal_to_decimal

Convert hexadecimal to decimal.

Parametershexadecimalrequired

decimal_to_octal

Convert decimal to octal.

Parametersnumberrequired

hex_to_rgb

Convert hex color to RGB.

Parametershex_colorrequired

rgb_to_hex

Convert RGB to hex color.

Parametersbrequiredgrequiredrrequired

hours_to_minutes

Convert hours to minutes.

Parametershoursrequired

minutes_to_seconds

Convert minutes to seconds.

Parametersminutesrequired

seconds_to_hms

Convert seconds to hours:minutes:seconds.

Parameterssecondsrequired

generate_uuid

Generate UUID(s).

Parameterscountversion

generate_uuid_v7

Generate UUID v7 (time-ordered).

Parameterscount

random_number

Generate random integer(s).

Parameterscountmax_valmin_val

random_float

Generate random float(s).

Parameterscountmax_valmin_valdecimals

random_string

Generate random string(s).

Parameterscountlengthcharset

generate_password

Generate secure password(s).

Parameterscountlengthnumberssymbolslowercaseuppercaseexclude_ambiguous

generate_token

Generate cryptographically secure token.

Parametersformatlength

generate_hash

Generate hash of text.

Parameterstextrequiredalgorithm

generate_lorem

Generate lorem ipsum text using Faker.

Parametersparagraphssentences_per_paragraph

generate_color

Generate random color(s).

Parameterscountformat

roll_dice

Roll dice.

Parameterscountsides

flip_coin

Flip a coin.

Parameterscount

shuffle_list

Shuffle a list of items.

Parametersitemsrequired

pick_random

Pick random item(s) from a list.

Parameterscountitemsrequired

generate_sequence

Generate a number sequence.

Parametersendstepstart

validate_email

Validate an email address.

Parametersemailrequired

validate_url

Validate a URL.

Parametersurlrequired

validate_phone

Validate a phone number.

Parametersphonerequiredcountry

validate_credit_card

Validate a credit card number using Luhn algorithm.

Parametersnumberrequired

validate_uuid

Validate a UUID.

Parametersuuid_strrequired

validate_ip

Validate an IP address (v4 or v6).

Parametersiprequired

validate_mac

Validate a MAC address.

Parametersmacrequired

validate_json

Validate JSON syntax.

Parametersjson_strrequired

validate_hex

Validate a hexadecimal string.

Parametershex_strrequired

validate_base64

Validate a base64 string.

Parametersbase64_strrequired

validate_alphanumeric

Check if text is alphanumeric.

Parameterstextrequired

validate_password_strength

Check password strength.

Parameterspasswordrequired

validate_date

Validate a date string.

Parametersformatdate_strrequired

validate_domain

Validate a domain name.

Parametersdomainrequired

validate_semver

Validate a semantic version string.

Parametersversionrequired

get_now

Get current date and time.

Parameterstz

convert_timestamp

Convert Unix timestamp to date.

Parameterstimestamprequired

convert_timestamp_ms

Convert Unix timestamp (milliseconds) to date.

Parameterstimestamp_msrequired

date_to_timestamp

Convert date to Unix timestamp.

Parametersdaterequired

format_date

Format a date string.

Parametersdaterequiredformat

parse_date

Parse a date string.

Parametersdaterequiredformat

add_time

Add time to a date.

Parametersdaterequireddayshoursweeksminutesseconds

subtract_time

Subtract time from a date.

Parametersdaterequireddayshoursweeksminutesseconds

date_diff

Calculate difference between two dates.

Parametersdate1requireddate2required

is_leap_year

Check if a year is a leap year.

Parametersyearrequired

days_in_month

Get the number of days in a month.

Parametersyearrequiredmonthrequired

week_number

Get the ISO week number of a date.

Parametersdaterequired

day_of_year

Get the day of year for a date.

Parametersdaterequired

is_weekend

Check if a date is a weekend.

Parametersdaterequired

calculate_age

Calculate age from birthdate.

Parametersbirthdaterequired

relative_time

Get relative time description (e.g., '2 days ago').

Parametersdaterequired

current_time

Get current time in specified timezone.

Parameterstimezone_name

convert_timezone

Convert datetime between timezones.

Parametersto_tzfrom_tzdatetime_strrequired

time_difference

Calculate difference between two datetimes.

Parametersdatetime1requireddatetime2required

add_time_2

Add time to a datetime.

Parametersdayshoursminutessecondsdatetime_strrequired

subtract_time_2

Subtract time from a datetime.

Parametersdayshoursminutessecondsdatetime_strrequired

start_of_period

Get the start of a time period.

Parametersperioddatetime_strrequired

end_of_period

Get the end of a time period.

Parametersperioddatetime_strrequired

is_leap_year_2

Check if a year is a leap year.

Parametersyearrequired

days_in_month_2

Get the number of days in a month.

Parametersyearrequiredmonthrequired

week_number_2

Get the ISO week number for a date.

Parametersdatetime_strrequired

get_quarter

Get the quarter for a date.

Parametersdatetime_strrequired

business_days

Count business days between two dates (excluding weekends).

Parametersend_daterequiredstart_daterequired

add_business_days

Add business days to a date.

Parametersdaysrequiredstart_daterequired

calculate_age_2

Calculate age from birthdate.

Parametersas_ofbirthdaterequired

list_timezones

List all available timezone abbreviations.

Takes no parameters.

unix_to_datetime

Convert Unix timestamp to datetime.

Parameterstimestamprequiredtimezone_name

datetime_to_unix

Convert datetime to Unix timestamp.

Parametersdatetime_strrequired

base64_encode

Encode text to base64. Properly handles Unicode.

Parameterstextrequired

base64_decode

Decode base64 to text.

Parametersencodedrequired

url_encode

URL encode text.

Parameterstextrequired

url_decode

URL decode text.

Parametersencodedrequired

html_encode

HTML encode text (escape special characters).

Parameterstextrequired

html_decode

HTML decode text (unescape special characters).

Parametersencodedrequired

hex_encode

Encode text to hexadecimal.

Parameterstextrequired

hex_decode

Decode hexadecimal to text.

Parametersencodedrequired

binary_encode

Encode text to binary.

Parameterstextrequired

binary_decode

Decode binary to text.

Parametersbinaryrequired

Version history

v1.0.2LatestSep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts

TinyFn

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TinyFn MCP Server

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Tools

is_even

is_odd

is_prime

is_positive

is_negative

is_zero

is_integer

is_divisible

is_perfect_square

is_fibonacci

factorial

fibonacci

gcd

lcm

absolute_value

square_root

power

percentage

average

round_number

clamp

distance

sin

cos

tan

deg_to_rad

rad_to_deg

add

subtract

multiply

divide

modulo

log

log10

log2

exp

floor

ceil

minimum

maximum

sum_numbers

sign

truncate

hypotenuse

cube

cube_root

square

nth_root

compare

compare_decimals

rank_numbers

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$9_/mo

$30_/mo