kongruity employs Large Language Model ("LLM") semantic grouping to cluster large volumes of "to dos" or issue tags in development settings, by their thematic or topical similarity.

(To learn more about semantic grouping, see, e.g., Kozlowski A., Boutyline A., Semantic Structure in Large Language Model Embeddings Aug. 2025, arXiv:2508.10003v1:04 Aug 2025).

In kongruity world, "to dos", action items, agile tickets, Jira comment threads (tagged for harvesting) ... the myriad artifacts of the creative-engineering process, are "sticky notes."

kongruity's React/Vite UI displays a board of your team's seemingly chaotic "sticky notes". But with one click, they are transformed into manageable, actionable groups, each with a header that explains that group's semantic relation.

The backend is an Express API that serves "sticky note" data and proxies semantic grouping requests to Large Language Models.

Developers may freely swap in other LLM SDKs and/or APIs... and alter prompt syntax at backend/services/clustering.service.js to complement R&D with any LLM model/platform they prefer.

Prerequisites

Node.js (v18 or later recommended)
An LLM Platform API key

Setup

1. Unzip the project

unzip kongruity.zip
cd kongruity

2. Create an environment file

The backend expects a .env file containing an Anthropic API key in the root backend/ directory. This file is git-ignored and must be created manually:

echo 'LLM_API_KEY=<your LLM API key>' > backend/.env

Replace <your LLM API key> with your actual key.

3. Install dependencies

cd backend
npm install

cd frontend
npm install

Run the app

Start the backend - Production Mode

From the backend/ directory:

npm run start

The API server starts on http://localhost:3001 (configurable via the PORT environment variable).

Start the backend - Development mode

To start using Nodemon for "hot reloads," if developing your own features:

npm run dev

Build the frontend - Production mode

From the frontend/ directory:

npm run build

Start the frontend - Development mode

From the frontend/ directory:

npm run dev

The Vite dev server starts on http://localhost:5173 by default. Open that URL in a browser.

Running tests

Backend tests

From the backend/ directory:

npm test

Backend tests use Supertest for HTTP assertions.

Frontend tests

From the frontend/ directory:

npm test

This runs vitest run with jsdom. For watch mode, during development:

npm run test:watch