Engineering Archive

Archive of 17 Systems & Builds.

Autonomous agentic pipelines, MCP security guardrails, full-stack enterprise SaaS, computer vision suites, and voice AI workflows.

AI, LLM & Agentic Systems

System 01

Sentinel: MCP AI Safety Guardrail

Sentinel acts as an intelligent security gateway between AI coding assistants (like Claude Desktop, Cursor, or Codex) and your terminal. When an AI tool proposes running shell commands or modifying files, Sentinel intercepts the request, runs it through a 3-stage validation pipeline (rules check, ML classifier, and security review pass), and blocks risky or destructive operations with zero unauthorized escapes.

PythonFastAPIscikit-learnOllama

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Code Live

VaniFlow: Multilingual Voice AI Employee

AI Automation & Voice AI

System 02

VaniFlow: Multilingual Voice AI Employee

VaniFlow provisions autonomous AI voice employees that handle real phone calls without walkie-talkie delays. Customers can speak naturally in English, Hindi, Telugu, or switch languages mid-sentence. Built with Gemini 3.8 Live with sub-200ms latency, it handles live interruptions seamlessly, qualifies customer leads, and books appointments directly onto Google Calendar.

Gemini 3.8 LiveGemini 3.8 FlashGoWebSockets

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Code

BrowserPilot: Automated Job Search & Web Bot

AI, LLM & Agentic Systems

System 03

BrowserPilot: Automated Job Search & Web Bot

BrowserPilot is an autonomous web agent that automates job hunting and browser workflows. Powered by Gemini 2.5 Flash reasoning and real Playwright browser sandboxes, it navigates complex job platforms (LinkedIn, Y Combinator, Indeed), extracts 100% verified application URLs without hallucination, fills out forms, and logs applications—cutting hours of manual job searching into seconds.

TypeScriptNext.js 16PlaywrightPrisma

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Code Live

Mobile & On-Device Intelligence

System 04

Daybook: Offline-First Android Daily OS

Daybook is a private Android operating system built with Jetpack Compose and hardware-backed SQLCipher database encryption. Engineered with a strict zero-cloud architecture: all tasks, journals, digital passes, and notes stay entirely on-device with zero network permissions. Features reboot-resilient reminders, on-device OCR for scanning documents, and private morning briefings.

KotlinJetpack ComposeMaterial 3SQLCipher

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Code

CampaignCraft: Multimodal AI Video & Ad Studio

Multimodal AI & Media Systems

System 05

CampaignCraft: Multimodal AI Video & Ad Studio

CampaignCraft automates commercial advertising production from a simple prompt into finished video campaigns. It coordinates Gemini 3.8 Flash for creative scriptwriting, storyboard generation, Gemini Omni 1.1 Flash for video rendering, and Lyria for background music. A server-side FFmpeg engine mixes audio ducking and subtitles in under 60 seconds.

Gemini 3.8 FlashGemini Omni 1.1Lyria 3.5FFmpeg

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Code

AI, LLM & Agentic Systems

System 06

Kindred: Autonomous AI Dating Network

Kindred replaces exhausting manual swiping with autonomous AI agents that date on your behalf. Each persona is created strictly from verified public profiles, simulating structured eight-beat dates (icebreakers, values probes, and banter). Both agents then record compatibility scores in private evaluation rooms, giving users authentic compatibility dossiers without conversational burnout.

Next.js 16React 19TypeScriptTailwind CSS

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Full-Stack & EdTech Platforms

System 07

Examly Enterprise: LMS & Exam Engine

A high-performance Learning Management and Assessment platform for schools and corporate training. Features a rules-based grading engine (cut grading time 75% for 200+ users), a token-wallet monetization system (1 token = ₹10, tiered Free/Paid/Premium content access), live leaderboards powered by a materialized PostgreSQL view, and Supabase Auth + Row-Level Security for zero-trust access control. Deployed with Server-Side Rendering for instant page loads and edge deployment via Cloudflare Workers.

React 19TypeScriptTanStack StartSupabase

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Full-Stack & SaaS Platforms

System 08

NexWare ERP: Multi-Tenant Business OS

NexWare ERP centralizes business operations including inventory, warehouse management, billing and invoicing, workforce management, and analytics into one platform. Built with a four-tier role hierarchy (Super Admin to Admin to Manager to Employee) and a permission-driven access engine, plus an integrated tax-calculation and invoicing system designed to replace multiple disconnected business tools with one unified system.

PythonFastAPIJavaScriptMongoDB

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Code Live

Local-First Multi-Agent Task Orchestrator

AI, LLM & Agentic Systems

System 09

Local-First Multi-Agent Task Orchestrator

An industrial-grade, local-first multi-agent orchestrator with real-time WebSocket token streaming, permission gating between agents, and empirical action verification so agents do not just claim success, the system checks. Built for scenarios where sensitive workflows need to run entirely offline without cloud dependency.

PythonFastAPIOllamaReactFlow

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Code

Full-Stack & HealthTech

System 10

ElderSphere: Care Coordination Network

A care management platform with three role-based portals (family, caregiver, and admin) plus Razorpay-powered donation processing with real-time payment tracking for contributors funding resident care.

Next.jsReactNode.jsExpress.js

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Code

AI Automation & Voice AI

System 11

Agentic Sales Call Center

A voice-AI lead-qualification system that pulls numbers from a Google Sheet, places outbound calls, and holds a human-like conversation. On genuine interest or a callback request, it fires WhatsApp confirmations to company and client, books a calendar slot, and logs every attempt to a tracking sheet.

Vapi Voice AIn8nGoogle Calendar APIGoogle Sheets API

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Code

AI & Financial Systems

System 12

Multi-Agent Portfolio Orchestration

A multi-agent hybrid portfolio management platform featuring an autonomous 3-stage RAG (Retrieval-Augmented Generation) pipeline, a confidence gate that decides when to escalate to an LLM, a dual-mode shell, direct broker API integration, and a full admin portal.

TypeScriptPythonRAG & EmbeddingsLLM Orchestration

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Code

Applied Computer Vision Suite (YOLOv8 / YOLOv11)

Computer Vision & Signal Processing

System 13

Applied Computer Vision Suite (YOLOv8 / YOLOv11)

A set of applied computer-vision pipelines: real-time gesture and object detection (YOLOv8), a security and surveillance anomaly-detection system (YOLOv11), and an ECG signal-processing pipeline extracting diagnostic features from waveform data.

OpenCVYOLOv8YOLOv11Python

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Code

Multi-turn Conversational AI Bot (Split Money)

AI, LLM & Agentic Systems

System 14

Multi-turn Conversational AI Bot (Split Money)

A GPT-4-powered customer service bot handling multi-turn conversation state, deployed in live production for the Split Money fintech app.

PythonGPT-4 APIFastAPIRedis

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Code

AI & Audio Processing

System 15

Voice Notes AI

A speech-to-text application powered by OpenAI's Whisper model, converting voice recordings into searchable, timestamped transcripts with export options.

PythonWhisper AINLPFastAPI

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Code

AI & Distributed Systems

System 16

Auto-Apply Job Engine / Career OS

An earlier system built around automated job discovery and application verification. Part of the broader Career OS microservices suite spanning 9 dedicated services (agent, browser extension, core API, web client, SDK, worker service, vault service, gateway service) designed as an end-to-end distributed system.

PythonTypeScriptPostgreSQLPLpgSQL

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Code

ECG Signal Processing & Waveform Telemetry Suite

Biomedical Signal Processing & Telemetry

System 17

ECG Signal Processing & Waveform Telemetry Suite

A biomedical signal-processing pipeline engineered for Sagar's B.Tech final-year capstone. Implements dual-pass bandpass Butterworth filtering, 5-point derivative filtering, non-linear squaring, and moving-window integration to extract Pan-Tompkins QRS complexes and Heart Rate Variability (HRV) metrics from MIT-BIH arrhythmia streams in real-time with sub-2ms processing latency.

PythonSciPyNumPySignal Processing

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Code