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Agricultural Marketplace Platform

CallKisan

OLX for Farmers & Agricultural Community

A comprehensive marketplace platform connecting farmers, traders, and service providers. Buy, sell, barter agricultural products with real-time chat, secure wallet, and AI-powered content moderation.

9
Microservices
Structured
DB Tables
Connected
APIs
AI
Powered
CallKisan Home Feed
Project context

The project at a glance

01

The need

Help agricultural buyers and sellers discover listings, contact each other and manage their activity in a shared platform.

02

Sagiam’s role

Marketplace app and connected services for listing, discovery, messaging and administration. The walkthrough below shows the main user journeys.

03

What to explore

Actual project screens show listing, chat and account flows. The technical diagrams explain the design; they are not verified operating or commercial results.

THE CHALLENGE

Indian Farmers Deserve Better

No Centralized Platform

Farmers rely on local mandis with limited reach and unfair pricing.

Middlemen Exploitation

Multiple intermediaries eat into farmer profits.

Trust Issues

No verification system for buyers or sellers.

Communication Gaps

Difficult to negotiate and close deals remotely.

THE SOLUTION

CallKisan: Digital Mandi for Everyone

A location-based marketplace that connects farmers directly with buyers, eliminating middlemen and maximizing profits.

Direct Farmer-to-Buyer Connection

Eliminate middlemen, maximize profits for farmers.

Location-Based Discovery

Find products and services within your area (up to 1000km).

Buyer and Seller Chat

Negotiate, share images/videos, discuss a purchase.

Trust Through Ratings

Build reputation with verified reviews and ratings.

Integrated Wallet System

Secure payments, referral bonuses, and lottery participation.

CallKisan Browse
Content review

A review step for marketplace posts.

01

Check uploaded content

The documented design includes automated checks to flag potentially unsuitable content.

02

Keep moderation controls

Classification needs thresholds, a review path and a way for administrators to handle mistakes.

03

Test with representative posts

Evaluate the categories, languages and media the platform actually receives. Review false alarms and missed content.

This explains the moderation approach. No accuracy, scale or cost-saving results are claimed here.

USER JOURNEY

From Download to First Deal

1

Download

Install from Play Store

2

OTP Verify

Quick phone verification

3

Profile Setup

Create your identity

4

Set Location

Enable GPS discovery

5

Start Trading

Browse & post listings

Splash
OTP
Register
Engagement features

Rewards as part of the user journey.

01

Referral tools

The project includes referral and reward features alongside account activity.

02

Wallet records

Wallet screens help users view their balance and transaction activity.

03

Admin controls

Reward rules, permissions and operations need to be configured and reviewed by the platform owner.

These are product features. Their effect on acquisition, retention and operating cost needs to be measured for the business.

PRECISION ENGINEERED

Features Built for Excellence

Like a premium automobile, every feature is meticulously crafted for performance and reliability.

MARKETPLACE ENGINE

Intelligent Listing System

Post products with rich media support - images, videos, detailed descriptions. Content checks can flag potentially unsuitable posts for review.

Multi-Image Upload

Up to 10 photos per listing

Video Support

5 resolution outputs

AI Moderation

TensorFlow NSFW detection

Create Post
Chat Messages
REAL-TIME COMMUNICATION

WebSocket-Powered Chat

Socket.io supports the messaging flow; delivery depends on the connection. Share text, images, videos, and even forward product listings directly in conversations.

Message updates

WebSocket real-time sync

Encrypted Messages

Secure chat with encryption key

Share Products

Forward listings in chat

FINANCIAL ECOSYSTEM

Integrated Wallet System

Complete financial management with Razorpay and BulkPE integration. Add money, withdraw to bank, earn referral bonuses, and participate in lottery draws.

Add Money

Razorpay

Withdraw

BulkPE Payout

Referral Bonus

Earn rewards

Lottery

Win prizes

Wallet
MULTI-ROLE PLATFORM

Three User Experiences

Regular User

Individual farmers and buyers

  • Browse & search listings
  • Create posts (buy/sell/barter)
  • Chat with other users
  • Rate & review transactions
  • Wallet & lottery participation

Business Account

Traders, wholesalers, retailers

  • All regular user features
  • Business profile & branding
  • List 6 products/services
  • Enhanced visibility
  • Business ratings separate

Admin Panel

Platform management team

  • User management
  • Content moderation
  • Category management
  • Draw/lottery management
  • Financial oversight
Spin and Win
GAMIFICATION

Spin & Win Lottery System

Engage users with exciting lottery draws. Sponsors can create branded draws with geographic targeting, ticket-based participation, and automated winner selection.

Geo-Fenced Draws
Polygon-based targeting
Ticket Purchase
Wallet integration
Sponsor Branding
Logo, name, website
VIRAL GROWTH

Referral & Rewards Program

Built-in viral growth mechanism with Firebase deep linking. Users share unique codes, both referrer and referee earn wallet bonuses, driving organic user acquisition.

How it works:
1
Share your unique referral code
2
Friend signs up with your code
3
Both earn wallet bonuses!
Referral Program
SYSTEM ARCHITECTURE

9 Microservices Architecture

Enterprise-grade platform built with scalability, reliability, and performance in mind.

Mobile Backend

API endpoints for user operations, posts, chat, payments.

Admin Backend

Complete admin control panel for moderation and configuration.

Socket Backend

Real-time messaging with Socket.io WebSocket connections.

NSFW Backend

TensorFlow.js AI for automatic content moderation.

Upload Backend

AWS Lambda serverless video processing & transcoding.

Android Apps

Native Kotlin Android applications with Firebase.

Web App

Bootstrap-based responsive web interface.

Admin Portal

Angular 9 admin dashboard with ng-zorro UI.

Data Layer

MongoDB + Elasticsearch with structured collections.

TECHNOLOGY

Built with Modern Stack

Node.js

MongoDB

Android

Angular

AWS

Firebase

Elasticsearch

Geo Search

Socket.io

Real-time

Razorpay

Payments

TensorFlow.js

AI/ML

APP GALLERY

Experience Every Screen

Splash
Login
Home
Browse
Product Detail
Create Post
Chat
Profile
Wallet
Referral
Reviews
Menu

Ready to Build Your Agricultural Platform?

Transform the agricultural sector with a comprehensive marketplace solution. Let's discuss your vision.

9
Microservices
Structured
Database Tables
Connected
API Endpoints
AI
Content Moderation
Planning a similar product?

Start with the users and their next step.

These screens show this project’s scope. Your features, integrations and delivery plan will be agreed around your requirements.

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What the CallKisan work demonstrates.

Farmers, traders and agricultural service providers. Marketplace listings, messaging, customer accounts and moderation interfaces.

  1. Create a listing
  2. Review the listing
  3. Discover an item
  4. Contact the seller

Represented scope

Marketplace listings, messaging, customer accounts and moderation interfaces. The case-study screens and feature explanations describe the represented product areas.

The decision behind the workflow

Product listings and communication must reflect the needs of agricultural buyers and sellers.

Qualitative outcome

The represented interface brings these tasks into a connected product journey. This is a description of the software experience, not a measured increase in customers, revenue or efficiency.

Evidence: the original project screens and feature descriptions on this page. Public availability, delivery dates and measured business results are not established by interface screenshots. Approximate delivery period: not confirmed for publication. Technology and integration descriptions refer to the represented project, not guaranteed support in every new scope.

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