Shehryar

Skill CLI Architecture

Problem

AI agents (Claude Code, Claude Desktop, custom apps) suffer from context bloat when many tools are loaded. MCP servers don't solve this - they just organize where tools come from, but all tool definitions still get injected into every conversation.

Solution: Dumb CLI + Skill Prompt

The recommended pattern is a "dumb" CLI (pure API wrapper, no AI) combined with a Claude Code skill prompt that teaches Claude how to use it.

Shehryar

infix operator ←→

extension Character {
    static func ←→(lhs: Character, rhs: Character) -> CountableClosedRange<UInt8> {
        guard let lhsInt = lhs.asciiValue, let rhsInt = rhs.asciiValue else {
                return 0...0
            }
            return lhsInt...rhsInt
        }
    }

Shehryar

#!/bin/sh

if [ -z "$XCODE_VERSION_CORRECT" ]
then
    export SUDO_ASKPASS="${PROJECT_DIR}/../scripts/askpass.sh"
fi

UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal

# make sure the output directory exists

Shehryar

p print(String(data: try! JSONSerialization.data(withJSONObject: messsages.body, options: .prettyPrinted), encoding: .utf8 )!)

Shehryar

import QuartzCore

func executionTimeInterval(block: () -> ()) -> CFTimeInterval {
    let start = CACurrentMediaTime()
    block();
    let end = CACurrentMediaTime()
    return end - start
}

Shehryar

export PATH=/usr/local/php5/bin:$PATH
export PHP_COMMAND=/usr/local/php5/bin/php

# Git branch in prompt.

parse_git_branch() {

    git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'

}

Shehryar

//
//  SafariKeychainManager.swift
//  UltraMotivator
//
//  Created by Shehryar Hussain on 04/15/16.
//  Copyright (c) 2014 Shehryar Hussain. All rights reserved.
//

import Foundation

Shehryar

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

Shehryar

extension String {
    subscript(pattern: String) -> Bool {
        get {
            let range = self.rangeOfString(pattern)

            return !range.isEmpty
        }
    }
}

Shehryar

NSError *error = nil;
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"fileName" ofType:@"json"];
NSData = JSONData = [NSData dataWithContentsOfFile:filePath];
NSDictionary *JSONDictionary = [NSJSONSerializatino JSONObjectWithData:JSONData options:kNilOptions error:&error];