Sacco Bridge is a dual-mode platform that digitizes informal savings groups (chamas) and facilitates secondary market liquidity for SACCO (Savings and Credit Cooperative) shares in Kenya.
# Sacco Bridge - Backend API
## Contributors
- Gitau William
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## Cooperative Liquidity & Chama Digitization Platform
Sacco Bridge is a comprehensive backend API that digitizes informal savings groups (Chamas) and creates a secondary market for SACCO (Savings and Credit Co-operative) shares. The platform enables SACCO members to access liquidity by connecting with verified buyers, while providing complete chama management tools including contribution tracking, loan management, and meeting coordination.
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## Problem Statement
Kenya's cooperative sector faces critical liquidity challenges:
- **Trillions of shillings locked** in SACCO shares with no secondary market
- **Months of friction** to exit a SACCO or liquidate group equity
- **Predatory mobile lending** as the only quick alternative for emergency cash
- **Manual chama management** using Excel sheets and paper ledgers
- **No credit history** for millions of disciplined savers in informal groups
- **Lack of transparency** in group finances leading to disputes
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## Solution Overview
Sacco Bridge provides a dual-mode platform serving both informal and formal cooperative finance:
| Feature | Description |
|---------|-------------|
| **Chama Digitization** | Replace Excel sheets with automated contribution tracking, M-Pesa integration, loan management, and meeting coordination |
| **SACCO Share Liquidity** | Secondary market connecting sellers needing cash with buyers seeking cooperative yields |
| **Atomic Settlement Engine** | 11-state distributed saga ensuring funds and shares are never lost during transfer |
| **Trustee-Backed Guarantee** | Licensed trustee bank provides settlement finality for all transactions |
| **Negotiated Connections** | Buyer-seller introduction with structured offer/counter-offer workflow |
| **Structured Dispute Resolution** | Evidence-backed resolution with immutable audit trail |
| **Multi-Channel Notifications** | Firebase push, …