SYLESS — Code Like You Think

SYLESS is an English-like programming language. Write code the way you speak — no semicolons, no brackets, no confusing syntax. It compiles to Python and runs instantly.

**Try it live → https://syless.vercel.app/

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Install the VS Code Extension

Search "SYLESS Language" in the VS Code Extensions panel, or install from the Marketplace:

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What does SYLESS look like?

# Hello World
show "Hello, World!"

# Variables
make name = "SYLESS"
show "Welcome to {name}!"

# Conditions
make score = 85
check score >= 90 {
    show "Grade: A"
} also check score >= 70 {
    show "Grade: B"
} otherwise {
    show "Grade: C"
}

# Loops
loop i from 1 to 5 {
    show "Step: {i}"
}

# Functions
task greet(name, msg = "Hello") {
    show "{msg}, {name}!"
}

greet("World")
greet("SYLESS", "Welcome to")

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Features

• English-like syntax — write make x = 10 instead of int x = 10
• Compiles to Python — runs on any machine with Python installed
• AI Tutor — powered by Claude AI to explain errors and suggest fixes
• Online IDE — write and run SYLESS in the browser, no install needed
• VS Code Extension — syntax highlighting, snippets, run with F5
• Machine Learning — built-in train, predict, evaluate commands
• Data Structures — stacks, queues, linked lists, trees, graphs built in
• DSA Visualization — see your data structures animate in real time

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Language Reference

Output & Input

show "Hello!"              # print
show "Hi {name}!"          # string interpolation
ask username -> "Name: "   # user input

Variables

make x = 10
x += 5
x -= 2
x *= 3
x /= 2

Conditions

check x > 5 {
    show "big"
} also check x > 2 {
    show "medium"
} otherwise {
    show "small"
}

Loops

loop 3 times { }
loop i from 1 to 10 { }
repeat while x < 10 { }
for each item in list { }

Functions

task add(a, b) {
    give a + b
}

Built-in Functions

length of x
upper of x
lower of x
round of x
absolute of x

Data Structures

make myStack
push 10 into myStack
pop from myStack

make myQueue
insert 5 into myQueue
remove from myQueue

make myTree
insert 7 into myTree

Machine Learning

load "iris" as data
train "knn" on data.data with data.target as model
predict model -> [5.1, 3.5, 1.4, 0.2]
evaluate model on data.data with data.target

Supported models: knn, tree, forest, linear, logistic, bayes, svm

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Run Locally

git clone https://github.com/nan455/SYLESS
cd SYLESS
npm run install:all
# add your ANTHROPIC_API_KEY to backend/.env
npm run dev

• Frontend: http://localhost:5173
• Backend: http://localhost:5000

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Stack

Layer	Tech
Frontend	React + Vite + Tailwind + Monaco Editor
Backend	Node.js + Express + MongoDB
Compiler	Custom Lexer → Parser → AST → Python
AI	Anthropic Claude (Haiku + Sonnet)

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Who is SYLESS for?

• Beginners learning to code for the first time
• Students who want to focus on logic, not syntax
• Teachers who want a gentle on-ramp to programming
• Non-programmers who want to automate tasks without learning Python

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Feedback & Issues

Found a bug? Have an idea?

• Open an issue
• Email: justmakeit654@gmail.com

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Developed by NANDACUMAAR · "just make it" startup
SYLESS — Code Like You Think