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Grace Esteban

Currently building

The Lab

Everything here is real: it’s either live, open source, or honestly labeled private. Descriptions come from the actual repos, not aspirations.

Pistahan.app — Volunteer Check-In

Liveopen source, MIT

Offline-first QR check-in built for the 33rd Pistahan Parade & Festival in San Francisco — 300+ volunteer check-ins through the gate in a 30-minute window, on zero budget. Volunteers pull up their own QR pass by email lookup; station scanners carry the full roster on-device, queue check-ins in an offline outbox, and sync in the background whenever festival Wi-Fi cooperates. The entire backend is a Google Sheet. Fork it for your own event.

PWAOffline-firstGoogle Apps ScriptVercel

pistahan.appgithub.com/mgesteban/pistahan

AgentBernay — Multi-Agent Marketing Studio

In developmentfor marketing agencies

Paste one business URL; a coordinated studio of AI agents — Brand Strategist, Copywriter, Art Director, Meme Specialist, Video Director, run by a real Creative Director coordinator — returns a full, on-brand, downloadable content pack: composed ad posters, captions, a carousel, a 14-day calendar, and a 9:16 UGC video ad that Opus watches, grades against a conversion rubric, and regenerates before handing it over.

Claude OpusManaged AgentsGemini VeoElevenLabsRemotion

Magneo SEO-Auditor

Livea Magneo Solutions product

A six-agent board that runs real technical SEO audits — crawl, metadata, semantic outline, E-E-A-T, JSON-LD — with a code-based validator that checks every recommendation against the site's live sitemap so it never tells you to build a page you already have. Also measures your Share of AI Voice: whether AI assistants name you, or your competitors, when buyers ask about your category.

Multi-agentTechnical SEOGEO

magneosolutions.com

BoardBreeze Concierge

Liveprivate codebase, running in production

The customer success team I couldn't afford to hire. Callers dial one number, 24/7; Claude answers governance questions, resolves product support, closes deals, and pages me when a human is actually needed. Five specialist modes picked per turn, statutory citations verified before they're read aloud, replies in under three seconds.

Claude OpusTwilioElevenLabsAWS Fargate

Case study →Call 1-844-786-2076

Eridian — Robot Chief of Staff

Privatein daily operation

The AI operations division for BoardBreeze. I talk to Eridian over WhatsApp; it orchestrates sub-agents for marketing, sales, and finance work against Google Workspace — outreach pipeline, SEO reports, expense scans — on cron schedules, in one Claude session.

ClaudeWhatsAppGoogle WorkspaceAutomation

Case study →

CCSF Board RAG Chatbot

Open sourcepublic repo

Ask questions about twenty years of City College of San Francisco Board of Trustees meetings — 196 agendas and 190 sets of minutes scraped from the public Granicus archive, chunked into a vector store, and answered conversationally by Claude with sources.

RAGChromaDBClaude APIStreamlit

Case study →github.com/mgesteban/ccsf-board-rag