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Essays and notes on governed AI in financial services. Essays argue one idea; notes are shorter takes on what I am reading and testing.

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Essays · 20

Aug 18, 2026

Passive capture: knowledge that writes itself, with humans who approve it

Documentation fails because it is a second job. The knowledge we need is already produced as a by-product of work: commits, tickets, incidents, reviews and decisions. Capture it passively, distill it, and keep a human approval gate before anything becomes trusted.

Context engineering6 min read
Jul 21, 2026

Not another data lake: context needs curation, not collection

The tempting answer to fragmented context is to pour everything into one place. We tried that with data, and many lakes became swamps. A context layer has to be a curated overlay: retrieval-first, owned, and pointing back to the systems that hold the truth.

Context engineering6 min read
Jun 30, 2026

Context fragmentation: why your agents keep starting from zero

The knowledge an agent needs is scattered across code, tickets, chat, wikis, incident tools and people's heads. Each fragment is accurate and useless alone. Fragmentation, more than model quality, is what makes enterprise agents brittle.

Context engineering6 min read
Jun 9, 2026

Inside an Architecture-as-Code platform: a working example

A tour of aac.muthub.org, the open prototype I built to show architecture as a control plane, and the design choices that mattered most: catalogs, executable guardrails, waivers as data, a computed scorecard and an MCP server for coding agents.

Governed AI6 min read
Jun 2, 2026

The cost of unmanaged context

Enterprises budget for compute, models and licenses, but almost none budget for the context those models depend on. Unmanaged context is the largest cost nobody tracks, and every new AI agent adds to it.

Context engineering6 min read
May 26, 2026

Model is a tool, harness is the strategy

Handing an AI agent a production codebase without a harness is like putting a teenager in a sports car with no dual brakes. Deterministic guardrails and sensors, owned as a platform, are what make agents safe to scale.

Governed AI6 min read
May 12, 2026

Architecture that runs: why AI-era governance must be code

AI now writes code faster than any review board can read it, while architecture still moves at meeting speed. Governance has to become something that executes in the pipeline and in the agent's context.

Governed AI6 min read
Feb 24, 2026

If you can't prove why an AI wrote it, you can't ship it

Shipping AI-generated code without recording where it came from is unmanaged risk. Regulated teams need deterministic provenance for non-deterministic models: line-level attribution, Git-native session history and AI bills of materials.

Governed AI5 min read
Sep 30, 2025

Agent-first data architecture: five principles

Data platforms built for people asking questions will strain when the main consumer is software taking actions. Five principles for designing data platforms where agents are first-class users, and why an open lakehouse helps.

Data & AI platforms6 min read
Jul 8, 2025

Leading architecture change without direct authority

In a large organization you rarely own the teams you need to move. Architects lead through clarity, credibility and standards people want to follow, and by treating the North Star and today's fires as one job.

Leading AI change6 min read
May 29, 2025

Securing AI agents: identity, not secrets

Agents act on their own, at machine speed, across many systems. Static credentials and perimeter thinking don't hold up. Attested identity, explicit delegation and policy enforced outside the model do.

Governed AI5 min read
Apr 22, 2025

Adopting MCP in a bank: the four risks to solve first

The Model Context Protocol standardizes how agents connect to tools and data. It is silent on whether they should. Four risk areas a regulated institution should resolve before agents get tools.

Governed AI6 min read

From the archive

Earlier essays on data platforms, MLOps and cloud architecture, published on Medium.