Projects

What we've shipped for clients, internally, and stuff you can use today.

We don't do slide decks and roadmaps. We ship software. Every GXB engagement ships a working system our clients can use in less time it used to take to write a proposal.

Below is a snapshot of what we've actually built and shipped for clients and internally since we started in February, 2026.

1. Client Work

Happy to do a live walkthrough of any of these on a call.

Commercial Real Estate Intelligence Platform

Industry: Commercial real estate brokerage (DFW metro)

A lead-scoring and territory tool for a brokerage targeting non-residential property owners. We ingest public county appraisal data for every non-residential parcel in the metro, classify each property by vertical (industrial, retail, medical, self-storage, etc.), and score owners against the brokerage's ICPs. Brokers get a filterable map, saved searches, and owner dossiers with inferred decision-makers pulled from their CRM history.

Multifamily Acquisition Intelligence

Industry: Multifamily real estate private equity

Identifies motivated sellers of apartment buildings before they hit the market. Triangulates three signals the public data already contains but nobody bothers to join: property fundamentals (unit count, vintage, ownership history), local rent trends, and debt maturity schedules from CMBS and agency loans. When all three line up, the property surfaces as a high-probability target.

The acquisitions team used to build lists manually one market at a time. Now the list builds itself and updates weekly, with an embedded chat assistant that can answer questions like "show me everything in Dallas with a balloon payment in the next 18 months under 150 units."

Expert Network CRM & Dashboard

Industry: Expert network / advisory services (serving PE and hedge fund clients)

Custom CRM replacing a tangle of HubSpot, spreadsheets, and a legacy React dashboard. Models the real domain (companies, experts, clients, engagements) instead of bending HubSpot objects to fit. Staff use a Rails dashboard for deal management and compliance review. Experts get a passwordless portal with TOTP for training and project intake.

HubSpot stays as a read-only source during migration and gets retired with a single migration once the cutover is done.

Corporate Entertainment Marketing Platform

Industry: Live corporate entertainment / conference keynotes

A solo performer whose clients are Fortune 500 meeting planners. We're building the back-office that lets a one-person shop operate like a twenty-person agency: a full Rails rebuild of the marketing site with ~35 programmatically-generated SEO landing pages (cities, case studies, TV appearances), an automated lead research pipeline that produces a structured dossier on any target account, and an AI proposal generator that turns recorded discovery calls into polished proposal drafts in minutes instead of hours.

All of it runs through the same internal platform below — cold outreach on mailer.gxb.vc, transcripts through media.gxb.vc, drafts through cortex.gxb.vc — so our client spends less time on operations and more time on the creative work that only they can do.

2. Internal Platform

Every client project needs the same boring infrastructure: auth, email, chat, maps, scraping, media processing, LLM inference. Instead of rebuilding it inside every client app, we run it as shared services on *.gxb.vc and clients' apps talk to them over standard protocols.

This is how we can stand up a new client app in a weekend instead of a quarter. New projects get to immediately inherit a battle-tested suite of polished tools.

auth.gxb.vc — Single Sign-On

Passwordless OAuth provider. Every other GXB-built app delegates login here. One account, email-code + TOTP, with per-domain access rules (e.g. "only @client.com and @gxb.vc emails can log in").

chat.gxb.vc — Embeddable AI Chat & Ticketing

Host apps drop in a <script> tag and get a chat sidebar with SSO already wired up. The widget runs an LLM with tool-calling against the host app's data. This system doubles as a support ticketing system: just ask in the chat for new features and they either get completed automatically or queued for human review. Ask questions in plain English and get charts, tables, and your internal data back.

cortex.gxb.vc — LLM Job Queue & Orchestrator

A private, self-hosted OpenAI-compatible API backed by our own AI hardware. Jobs come in from client projects (i.e. "generate a cold email sequence for this lead"), get routed to our Mac Studios running MLX locally, and fall back to frontier models on Anthropic, OpenAI, Google, or XAI for speed or higher inteligence. Handles tool-calling loops, per-key usage tracking, and priority queuing.

This project is a game changer for the unit economics of spending tokens. Instead of having to carefully manage token budgets we can throw essentially unlimited compute at our client's problems.

geocoder.gxb.vc — Geocoding Service

Geocoding, translating a written address like "123 Main Street" into actual GPS coordinates of latitude and longitude, is a stupidly complicated problem involving gigantic data sets. The industry standard is Google's Geocoding API at $5 per 1,000 addresses. Our friends at Geocodio only charge $1 per 1,000 addresses.

Even Geocodio was getting expensive quickly for the sorts of problems we wanted to throw at it (i.e. "map every multifamily property in the United States").

So we built our own. geocoder.gxb.vc is a self-hosted service running Pelias (the open-source geocoder behind Mapzen) backed by OpenAddresses data and Census ZCTA boundary polygons for ZIP code lookup. Handles forward geocoding (address -> coordinates) and reverse geocoding (coordinates -> address + ZIP).

Now we have unlimited free geocoding running on a $42/month VPS.

If you'd indulge us on a brief rant: it's genuinely absurd that in 2026 we still identify locations with human-readable street addresses that require a multi-billion-dollar industry to convert into machine-usable coordinates. Geocoding is a bridge between a system designed for mail carriers in the 1800s and computers that think in numbers.

Better systems exist and nobody uses them. Google's Plus Codes encode any spot on Earth into a short alphanumeric string (like 86F6+RX Dallas). what3words divides the planet into 3m×3m squares, each with a unique three-word label (like filled.count.soap).

Either of these are prefectly precise, shorter than traditional addresses, and completely remove the need for geocoding.

Alas, geocoding is still a necessary process but at least now it's free.

mailer.gxb.vc — Cold Email Platform

Self-hosted replacement for services like ReachInbox. Connects Microsoft 365 / Google inboxes over OAuth, runs per-contact sequences (each contact is its own "campaign" so nothing gets sent after a reply), and surfaces the unified reply inbox next to the outreach history. Used by GXB and by clients running their own outbound marketing.

media.gxb.vc — Media Processing API

Accepts a URL (YouTube, podcast, direct MP4), downloads it, extracts audio with ffmpeg, and serves the result over a token-authenticated REST API. YouTube downloads run on a residential IP; Whisper transcription runs on a Mac Studio GPU. Used by client apps that need to ingest recorded calls, podcasts, and video.

scraper.gxb.vc — LLM-Powered Web Scraper

Give it a URL and a JSON schema; it browses the site with a real headless browser (or a curl fallback when the target allows it) and returns structured data matching your schema. No XPath or brittle selectors: the LLM reads the page like a person would. This is how we keep the real estate pipelines and CRM enrichment jobs running even as source sites change their markup.

pios — Remote Agent Manager

Our internal LLM harness for managing development. Claude Code is extremely token inefficient, only works with Anthropic's LLMs, needs a higher-level manager like tmux to manage multiple parallel sessions, and just generally feels coddling.

pios syncs sessions between our servers, computers, and phones so we can get inhuman levels of work done from anywhere.

3. Tools

Lower-level stuff that helps us build and prototype the services and apps above. These are the individual CLIs that our coding agents (and our humans) actually invoke to do real work — send an email, search the web, post to LinkedIn, transcribe a YouTube video, generate an ad.

This is a way better abstraction than MCP, which is a garbage protocol. A CLI is documented by --help, works from bash and from an agent, composes with pipes and jq, and can be tested in two seconds from a terminal. MCP is a stateful JSON-RPC server with a custom transport that none of the above is true for. If you want to send someone a letter you don't need to build a vacuum tube between your house and theirs frist, you just send it through the mail.

All of these tools are open source under github.com/gxbvc.

Communication

Sales & Marketing Data

Content & Media

Infrastructure & Ops

Vertical-Specific

Want to work together?

Most of what you see above started as a weekend prototype for a client meeting. If you have a messy internal process or a pile of data nobody's mining, we can probably ship a working version of the thing in a day or two.

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