Engineering Guild — an AI-native venture studio

Solve Earth first.

Like others sell life beyond Earth, we sell one idea: fix what is broken here. We build digital products that generate cash, and compound the surplus into long-horizon energy research — because cheap, abundant energy is the master key to cheap water, food and housing.

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18 PROJECTS WITH A DECLARED STATUS 5 OPERATING ENGINES 1 FOUNDER + A 24/7 AGENT WORKFORCE
The thesis

Make the essentials tend toward price ≈ 0 — and give everyone access.

Today much of humanity lives without reliable water, food, or a home — things that should exist in abundance. Profit is fuel, not the goal. The order is always the same: solve → create value → then profit.

STEP 01

Products

Small, independent digital products — "mini-factories" — each built to stand on its own and reach real users fast.

STEP 02

Cash

Those products generate revenue. Revenue buys independence: no outside mandate over the long-horizon work.

STEP 03

Research

Surplus funds energy R&D — the MNR-1 microreactor programme and the autonomous-factory work around it.

STEP 04

Abundance

Energy toward ~0 cascades into cheap water, food and housing. That cascade is the entire point.

The portfolio

Everything the Guild is building — with honest status.

Status is reported honestly: Live means it is serving users today. Active means real implementation with quality gates still being verified. Research means exactly that.

Products — what people actually use
IDEA-002

BOSS

Active

PMO platform and app hub the Guild runs on — Next.js monorepo, not yet deployed.

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IDEA-004

Atomic Park / MNR-1

Active

Public experience platform for the MNR-1 microreactor programme — built, not yet deployed.

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IDEA-005

ARCA

Gated

Algorithmic trading platform — paper-only development lane, real money is a hard gate.

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IDEA-006

Project Money

Active

The cash engine's planning and marketing home — a line of independent mini-factories.

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IDEA-006

Fábrica de Agentes

Live

10 ready-made AI agents for small businesses (PT-BR). Live, selling, first product shipped.

See the live product →
IDEA-012

Library-AI

Active

The Guild's knowledge base and creator companion — the first app connected to BOSS.

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IDEA-015

Guild Agent

Live

A personal-first, local-first CLI for human development — no server, $0 by default.

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Engines — the operating model
IDEA-016

ARM Legion

Planning

The dispatched workforce's doctrine — mission-order protocol, no runtime code yet.

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IDEA-017

Engineering OS

Planning

The cross-cutting engineering-skills library, built on SWEBOK — early, mostly scaffolded.

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IDEA-019

Growth OS

Gated

The 5th engine — marketing and distribution. Design frozen, execution deliberately gated.

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Infrastructure — the parts that keep it running
IDEA-001

Engineering Guild

Active

The umbrella repo: standards, decisions, methodology, design system.

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IDEA-009

Memory OS

Active

The shared brain — git-synced memory for every Guild agent, across machines.

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IDEA-011

24/7 Ops

Live

The heartbeat — a scheduled agent fleet that scouts, plans and logs around the clock.

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IDEA-018

Governance Library

Active

The executive record system — minutes, policies, briefings, reports. Private by design.

caio-castilho

caiocastilho.com

Live

The founder's personal site — hosts the funnel entry points for Project Money.

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Libraries — reusable skills and procedures
IDEA-013

Skills Library

Active

A cascading, versioned library of agent skills — 112 registered, 29 active.

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IDEA-016

Operations Skills (POPs)

Active

13 checklist-first standard operating procedures squads load while executing missions.

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Research — knowledge, not products (yet)
IDEA-004

Parque do Urânio (MNR-1 knowledge base)

Research

The documentation twin of Atomic Park — the MNR-1 dossier, legal stack, and simulators.

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Why trust this

A one-founder studio that runs like a regulated engineering shop.

The Guild's operating system is GOX — a graded project-management and quality system drawing on PMBOK, ISO, Lean Six Sigma and the discipline of nuclear-grade quality assurance. It scales from a one-hour task to a multi-year programme, and it is the same system we intend to sell.

  • Nothing ships invisibly. Every change is an issue, a branch, a pull request and a green pipeline.
  • Nothing is "operational" on a promise. That status requires verified gates and evaluations, not an opinion.
  • Add, don't delete. Decision logs are append-only; a superseded decision stays on the record with its date.
  • Verify before adopting. Every external claim we depend on passes through a reference ledger first.
  • Humans hold the irreversible switches. Spending, publishing, deleting and anything touching money stay with the founder — by written rule, at every level.
The papers

The reasoning, written down.

The Guild communicates through a suite of papers rather than a single manifesto — each one accountable to a source document inside the Guild's own governance record.

White Paper The vision, the universe, and what the Guild is. PM Paper GOX — the project and quality management method, end to end. Technical Paper The architecture: how the engines, agents and memory fit together. Product Paper The products, the ladder, and the roadmap between them. Economic Paper The economic model and how value flows through the studio.
Go to the papers index