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Mandi System

A trading and settlement platform for wholesale produce markets: lot intake, live auction pricing, commission-agent ledgers and end-of-day settlement in one system.

The Mandi dashboard: the day's cash, credit, purchases, expenses and net result, with total lungers and outstanding credit beneath them
The credit sale screen, waiting on a customer before any lungers can be entered against them
The customer ledger, ruled for today's lungers, today's credit, today's receipts, the running balance and the last transaction
The daily report for a chosen date, with its credit sales, purchases and expenses tables above a Generate PDF button
Settings: business details for receipts, the per-lunger charge, and a language panel stating that English and Urdu always appear together
Category
Internal product
Role
Product and engineering
Year
2026
Status
in-development

Development progress

Development progress55%

Current phase Settlement and ledger hardening

Completed

  • Lot intake with crate counts, grades and arrival weights
  • Live auction screen with per-lot bidding and rate history
  • Commission-agent ledgers, per party and per day
  • Buyer and grower accounts with running balances
  • Daily rate board, published per commodity
  • Role-based access across agent, clerk and owner

Remaining

  • End-of-day settlement runs and printable statements
  • Receivables ageing and payment reminders
  • Offline-tolerant capture on the mobile client
  • Urdu interface pass across the operator screens
  • Pilot deployment in a working market

Technology

  • TypeScript
  • Next.js
  • NestJS
  • PostgreSQL
  • Prisma
  • Redis
  • React Native
01.

The Problem

A wholesale produce market runs on paper. Lots arrive and are weighed, auctioned and handed over long before anyone writes down what was owed to whom, and the commission agent reconciles a day of trade from a stack of slips in the evening.

The cost is not the bookkeeping. It is that nobody, the grower least of all, can see what a lot actually sold for, what was deducted from it, or what is still outstanding against a buyer who took delivery three days ago.

02.

What We Are Building

One system that follows a lot from arrival to settlement: intake records crates, grade and weight; the auction screen captures the rate it actually sold at; and both sides of the trade post to a ledger as it happens rather than at the end of the day.

Agents work the way they already do. The screens are built for a clerk standing in a market with one hand free, not for a desk, and the running balances are the same ones the agent would have written in a register.

03.

The Hard Parts

Settlement is where the difficulty is. A day of trade is not a list of independent sales: commission, labour, transport and previous balances all land against the same parties, and the arithmetic has to match what the agent would have reached by hand, or the system is not trusted twice.

Connectivity is the other one. A market is a poor place for a network, so capture has to hold what it recorded and reconcile it later without ever double-posting a lot that was already settled.

The Mandi dashboard: the day's cash, credit, purchases, expenses and net result, with total lungers and outstanding credit beneath themThe credit sale screen, waiting on a customer before any lungers can be entered against themThe customer ledger, ruled for today's lungers, today's credit, today's receipts, the running balance and the last transactionThe daily report for a chosen date, with its credit sales, purchases and expenses tables above a Generate PDF buttonSettings: business details for receipts, the per-lunger charge, and a language panel stating that English and Urdu always appear together

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