Matthew Karsten — AI engineering that moves revenue

I build the AI — and I can prove it moves revenue.

Most AI engineers can't sell. Most salespeople can't build. I've shipped ~50 production agent systems and 130+ published packages, designed and built live client products, and personally closed $50M+ in sales. One person, both halves.

$50M+

Sales closed

10,000+

Developers grown

130+

Published packages

Live client sites

Revenue is the only metric that survives a demo.

I don't just ship product — I've owned a quota and hit it at scale.

Cross-Border Listing Manager · LBank Exchange

$50M+ closed on a five-person team.

Led enterprise and emerging-venture onboarding end-to-end across the US–LATAM corridor for a top-tier exchange — priced listing packages, ran the close, and drove ecosystem business development at the industry's largest conferences.

$50M+

in sales closed

$5B+

in trading volume driven

An agent-tooling layer most teams take years to build.

Independently verifiable — every package below is public under my own accounts.

Model Context Protocol

~50 MCP servers · 130+ packages shipped

The layer that lets LLMs act on real systems — wallets, CLIs, browsers, enterprise APIs (Hedera, Solana, Sui, GOAT, Shopify, IBM watsonx, the full Apple suite). 86 on npm, 46 Rust crates, all under my own handles.

86 npm packages 46 Rust crates 122 public repos Listed on Glama

Distributed AI · AIDP

47% cheaper

LLM inference on decentralized GPU at 180ms p50, vs. centralized cloud. Companion video pipeline: 16× faster encode at VMAF 95.8.

Secure systems · Coldstar

Air-gapped Rust signer

A 17-crate cold-wallet family — ~100µs key-exposure signer + from-scratch ZK layer (108 tests) — shipped across 5 Solana sponsor tracks (Jito, MagicBlock, SNS, Umbra, Superteam IE) with EU-compliance design, plus an investor deck & whitepaper. 4× hackathon winner.

Physical AI · SINT

From voice agent to governance layer

Started as a voice agent I taught to trade; evolved into a physical-AI governance layer aligned to IEC 62443 and the EU AI Act.

Try the Purple Squirrel GPT Live AI demo on Hugging Face

Trusted to grow ecosystems — and to judge them.

Developer relations, open source, and published work.

DevRelZetaChain — grew a $27M-funded omnichain L1 to 10,000+ active developers with starter kits, SDKs, and reference apps across 6 networks.
JudgeETHDenver hackathon judge — and a 4× hackathon winner myself. Both sides of the table.
SpeakingEthCC ZetaChain fireside · Solana Embassy pitch · ETH NYC — recorded.
Open source122 public repos · 6 models & a live demo on Hugging Face · 16 authored agent skills.

Published · Amazon KDP

The Crypto Survival Guide

Superteams: And How to Build Them

Accelerate Solana Consensus

Let's build

Bring me the half you're missing.

Whether you need the AI shipped or the revenue closed — or someone who does both — I take on a small number of client projects at a time.

matthewkarstenconnects@gmail.com x.com/expertvagabond Telegram

I build the AI — and I can prove it moves revenue.

Selected work — shipped, live, clickable.

AI Academy

Coldstar

SINT Labs

Lifeforce Clinic, Tulum

Like Group Management

Francisco Pellegrini

White Monkey

G-Stegs

Purple Squirrel Media