How much is Slim-Maddy: AI Excel Executive Dashboard?

Slim-Maddy: AI Excel Executive Dashboard is listed for sale at $850 USD.

Slim-Maddy: AI Excel Executive Dashboard - Sell Project

Name: Slim-Maddy: AI Excel Executive Dashboard
Price: 850 USD
Availability: InStock

Listed September 22, 2026

About Slim-Maddy: AI Excel Executive Dashboard

Office.js Excel add-in that auto-generates KPI cards, pivots, and dual charts.

I built Slim-Maddy because I wanted an Excel add-in that actually builds full, executive-ready dashboards from raw, messy tabular data with a single click—without crashing Excel or placing charts on top of data cells. Most Excel tools either spit out plain tables or depend on brittle VBA macros. Slim-Maddy is an Office.js taskpane add-in written with TypeScript, React 18, and an Express/Node backend. It reads your active sheet, calculates summary metrics, builds a native tabular pivot table, and inserts synchronized dual charts (a Column chart and a Doughnut chart) neatly aligned side-by-side. What makes this codebase solid: Solved the Excel host rendering bugs: Office.js on desktop (Excel 2016 through M365) has notorious coordinate positioning quirks. I spent weeks getting the two-point grid anchor mathematics right so charts sit neatly across rows 6 to 20 without covering the pivot table underneath. Handled real data edge cases: Built a robust profiling stage that handles string trimming, whitespace variations, and safe KPI fallback formulas (e.g., INDEX/MATCH/MODE calculations) so you never get broken #N/A cards. 181 passing automated unit tests: Includes full test coverage across validation schemas, cell boundary snapping, and Office.js context lifecycles. Decoupled, clean architecture: Modern React frontend, TypeScript throughout, Webpack build configuration, and environment variable configuration (.env.example included). What is included in the sale: Complete, clean source code repository (src/, test/, fixtures/, manifest.xml, build setups). All 181 automated tests and mock fixtures. Setup guide with clear instructions to run locally or configure your own LLM backend. Full commercial rights and 100% intellectual property transfer. Why I am selling: The core engine and UI are done and working reliably. However, I am shifting my focus to another project and do not have the time to market this as a public SaaS or take it through the Microsoft AppSource store review.

Project details

Next step: 1. The $18,000 Enterprise Cost-Arbitrage Play:Equipping a 50-person operational or finance team with Microsoft 365 Copilot costs $12,000 to $18,000 per year ($20 to $30/user/month). Despite that cost, Copilot blindly overwrites production workbooks and frequently hallucinates formulas. Meanwhile, single-function tools like Formula Bot ($18/mo) or Numerous.ai ($10–$30/mo) are either simple web converters or run slow cell-by-cell loops that cannot build full dashboards. Slim-Maddy runs identical or superior reporting for under $300/year in raw API consumption. A buyer can package this as a managed B2B add-in, charging organizations a flat $499–$999/month—saving clients over 80% while delivering predictable recurring revenue. 2. Enterprise-Grade "Trust Engine" Features Ready to Market:- Zero Silent Writes: Traditional tools silently modify formulas. Slim-Maddy's structured architecture ensures no destructive workbook mutation occurs without deterministic calculation.- Industrial & Operational Profiling: Tailored specifically to scan column types, isolate null values, and clean messy real-world datasets (attendance, QA line inspections, workforce schedules, inventory).- 50-Step State Isolation: Reverts workbooks to their exact pre-run state without forcing a destructive OneDrive version rollback. 3. Microsoft AppSource Commercialization:The add-in uses standard Office.js manifest schemas and TypeScript with zero legacy COM/VBA dependencies, making it directly eligible for submission to the Microsoft AppSource B2B Storefront to capture enterprise Microsoft 365 tenants worldwide. 4. Consulting & Agency White-Labeling:Deploy the deterministic 4-pass engine as a white-label backend for business consulting firms, fractional CFOs, and operational agencies to automate custom reporting deliverables that currently consume billable manual hours.

For sale

Asking price: $850 USD

What's included

Source code, All related design work

Full automated test suite (181 passing unit tests and mock workbook fixtures). Microsoft Office manifest XML configuration and Webpack production build pipeline. Quickstart developer documentation and environment configuration template (.env.example). 100% intellectual property ownership transfer with full commercial rights.

Reason for selling

I am busy with other things and no longer have time to maintain this project.

Project metrics

Average Monthly Revenue: Pre-revenue