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seanebones-lang/README.md

Sean McDonnell

Founder & CTO at NextEleven — building production-grade AI agents, tools, and SaaS platforms.

Dallas, TX

What I Build

I build AI-native systems and high-leverage developer tooling. My focus is on autonomous agents, local-first AI infrastructure, and full-stack SaaS platforms that solve real problems with clean, production-ready execution.

Area Demonstrated Depth
AI Agents & Tooling Rust-based coding agents, MCP protocol, multi-provider routing, semantic memory systems
Local & Applied AI RAG pipelines, CPU-optimized embeddings, creative AI workflows (tattoo linework, design tools)
Full-Stack SaaS Next.js + TypeScript platforms, booking systems, client products with Supabase/Drizzle
Mobile React Native + native iOS (SwiftUI) applications

Primary Stack: Rust · TypeScript · Python · Next.js · Supabase · xAI Grok · Local LLMs (Ollama)

Key Projects

harness

Production-grade terminal AI coding agent written in Rust. Includes MCP support, semantic memory, multi-provider architecture (xAI, Anthropic, Ollama), and a high-performance TUI. Built for serious engineering use cases.

InkLine-Pro

AI-powered React Native application that generates professional tattoo linework from text or photo references using Grok + Hugging Face models.

trailerguard

Mobile platform for trailer and fleet operations featuring BLE tire pressure monitoring, immutable mileage tracking, and real-time alerting. Built with React Native + Supabase.

Personal RAG

Local-first Personal RAG system. Ingests personal data (emails, chats, documents, code), embeds with lightweight CPU models, and enables natural language querying using Ollama.

web-part-two

NextEleven marketing site with Sanity CMS and an integrated Grok-powered AI chat widget.

Additional client work and private AI/agent projects available on request.

Currently Building

  • harness — Next-generation local + cloud coding agent infrastructure
  • Tattoo industry AI tooling and artist platforms
  • Personal knowledge systems and local RAG infrastructure

Contact

Open to serious conversations around AI tooling, agent systems, and product development.

Pinned Loading

  1. TanStack-Wonderland TanStack-Wonderland Public

    TanStack Wonderland is a dynamic web dashboard showcasing the entire TanStack ecosystem: Router for navigation, Query for data syncing, Table for data grids, Virtual for performant lists, and Form …

    TypeScript 1

  2. Eleven-Term Eleven-Term Public

    Eleven, for your terminal

    Python 1

  3. Grok-Code Grok-Code Public

    Better than what you think

    TypeScript 1

  4. harness harness Public

    Terminal-based AI coding agent built in Rust — powered by Grok (xAI) with MCP support, semantic memory, and a TUI

    Rust 1

  5. personal-RAG personal-RAG Public

    PersonalRAGVault is a local-first RAG system that ingests personal data from downloads (emails, chats, invoices, codebases, tweets), embeds it with a lightweight 0.6B model on CPU, stores in a vect…

    Python 2

  6. sniper sniper Public

    A research-first, self-protecting 24/7 automated trading system for Polymarket and Kalshi.

    TypeScript