Agentic development

Fourteen products, eight months, one pair of hands

Market data products, planning and supply-chain systems, browser games and rendering engines, workflow automation. Different domains, one habit: take something manual and opaque, and turn it into something somebody else can operate — the ingestion underneath, an interface, the tests, and the deploy.

None of these started as a commission. If you have one you want to exist, that is the conversation — bring the idea, not a specification.

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At a glance

Products built

Months, Jan–Sep 2026

Domains, not one niche

Screens captured, not mocked up

Method

How these actually get built

Agents make volume cheap. They do not make correctness cheap — that still has to be engineered. The discipline is what makes the output trustworthy.

Specification before code

Each project starts as a written contract — what it must do, what it must never do, what “done” means. Ambiguity is the one thing agents amplify rather than absorb, so it gets removed before a single file is generated.

Agents do the volume

Scaffolding, integrations, migrations, test fixtures — the work that is large but not subtle gets delegated. I stay responsible for architecture and for reading every diff. Delegation is not abdication.

Tests are the gate

Generated code earns trust by passing something. This very site is the clearest example: guardrail tests for structure and accessibility, translation-parity checks across languages, and a deploy preflight that resolves every link before anything ships.

Markets

Financial data products

Public-filing pipelines and quantitative research tooling: ingestion, normalisation, and a front end somebody other than the author can sit down in front of. The hard part is never the chart — it is the parts of the data that lie.

A finished BB Breakout backtest on the demo’s frozen TSLA history: entry and exit markers on the chart beside a $30,261.25 portfolio, +202.61% total return, 0.53 Sharpe and 31.42% max drawdown over 84 trades

Quantitative research

SearchForAlpha Lab

BriefTest a strategy honestly before anyone risks money on it — signals, costs and drawdown against real history, not a spreadsheet.

Python Dash pandas Plotly pytest

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Free 7-day trial with your email. Prices and fundamentals frozen at the 11 September 2026 close; no broker, and runs are capped.

The database status view over the frozen demo snapshot: 223,501 holding rows across 239 filings from 51 tracked funds, with the latest filing per fund and its CUSIP-normalised position count

Regulatory filings

13F Screener

BriefKnow which funds opened, added to or exited a position the day the 13F lands, without anybody reading a filing.

Python FastAPI React SQLite Telegram

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Leave an email, get a link back. Read-only; filings to 1 June 2026.

The demo’s active reporting slice, frozen at 12 September 2026: 1,139 transactions from 56 members across 425 resolved tickers, with the disclosed range and the latest filings underneath

Civic data extraction

Congressional Disclosure Tracker

BriefTurn a public disclosure regime that publishes loose forms into a dataset somebody can actually query.

Python SQLite React Polygon API

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No sign-up. Read-only, data frozen 12 September 2026.

The portfolio on one screen: a net worth tile per account over a panel breaking down what each one has returned on the money paid into it, and the account value curve plotted against a benchmark. Every amount is blurred; the percentages are not

Portfolio accounting

SwingJournal

BriefKnow what a portfolio has actually returned — after currency, withholding tax and fees, across five account types — when the broker hands you a CSV and a percentage.

Next.js TypeScript Drizzle PostgreSQL Recharts

Code and a walkthrough on request.

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Games

Games and simulation

Real-time rendering, simulation loops and game feel — the areas where a defect is visible rather than statistical, and where nobody grades on intent. All three run entirely in the browser, with no backend at all.

$A held asteroid close up, its rim ringed by procedurally grown fractal trees and their canopies lit, with the readout underneath giving Glimelle 28 seedlings, 4 sentinels, 84 minerals, 79 shield and five of five trees$

Browser strategy

Asterbloom

BriefA finished browser strategy game in the Eufloria lineage — no engine licence, no bought assets, and it has to be playable, not just runnable.

TypeScript PixiJS Vite Vitest

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The whole game, no sign-up. Opens 60 seconds into a match.

A voxel metropolis of 30,041 residents filling its island and spilling onto the next, ropeways strung between them and the simulation running at 4x

Rendering engine

Voxel City Builder

BriefRender and simulate a city in the browser at a frame rate a player will accept, on whatever hardware they happen to have.

TypeScript WebGL Web Workers Vite

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The whole builder, no sign-up. Needs WebGL; a laptop GPU will feel the larger cities.

A twelve-fold green and gold arabesque mandala on deep blue, with a dark control panel of sliders on the right

Generative graphics

Fractal Mandala Visualiser

BriefExplore Islamic geometric pattern the way you would a map — every parameter live at frame rate, on whatever GPU the browser happens to have, and any view worth keeping shareable as a link.

JavaScript WebGL GLSL

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The whole visualiser, no sign-up. Needs WebGL; the control panel is in Italian.

Tools

Automation and workflow tooling

Each one started as an hour somebody was losing every week to a manual pass. Small in scope and honest about it — but each runs unattended, and has done for months.

The analytics surface over a run: a fetched, passed and notified funnel per source, a reliability bar per adapter, an SPC control chart on notified volume against its limits, and a Pareto of what each filter rejected

Multi-source aggregation

Job Alert Bot

BriefBuilt for a friend who was losing an evening a week to a dozen job boards. The bot makes that pass instead, hourly.

Node.js SQLite Discord.js Playwright

Code and a walkthrough on request.

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The whole tracked set on one map: 312 listings from both sources clustered across London, priced and addressed down the sidebar, under the source, new-build and maximum-rent filters

Scraping and geocoding

London Rental Tracker

BriefAnswer a London one-bed ad the hour it appears, in a price band where the good ones are gone by the evening, without sitting on two portals all day.

Python curl_cffi Ollama Leaflet Node.js

Code and a walkthrough on request.

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A kickoff meeting turned into a mind map by a model running on the machine: the transcript in the left panel, and on the canvas a centre standing for the meeting with typed branches — client information requirements, capability assessment, CDE naming — shared between a left and a right wing so neither side runs off the screen

Local LLM extraction

Transcript Mindmap

BriefGet the structure out of a meeting transcript without the transcript leaving the room it was recorded in.

Node.js Ollama D3.js

Code and a walkthrough on request.

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A day laid out on the grid — deep-work, meeting, break and buffer blocks, the finished ones struck through — beside the day’s three most-important tasks, the capture inbox and the shutdown notes

Full-stack productivity

TimeBlock Planner

BriefMove a paper day-planner ritual onto a screen without losing the constraints that made the paper version work.

React TypeScript FastAPI SQLModel Docker

Code and a walkthrough on request.

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The window before a run: readiness checks for ffmpeg, the Python environment, the large-v3 model and the GPU it found, over a queue of six recordings with their size, length and status, and the quality, precision and speaker controls underneath

Offline speech-to-text

Voice Transcriber

BriefTranscribe hours of recorded conversation, and tell the voices apart, on a machine that is connected to nothing.

Python faster-whisper Tkinter NVIDIA NeMo CUDA

Code and a walkthrough on request.

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Delivery

Construction and supply chain

Where the software meets the discipline. These run against real standards and real vendor APIs, which is what makes them awkward — and what makes them worth building.

The supplier network view: sourcing capacity concentrated by country as a ranked bar chart, beside a live feed of tariff, weather and strike events scored for severity

Multi-agent systems

Agentic Supply-Chain Orchestrator

BriefWatch the events that break a supply chain, cost the alternatives, and put a named person in front of every decision that spends money.

LangGraph FastAPI PostgreSQL pgvector PuLP Docker

Code and a walkthrough on request.

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A Kensington MSOA inspected in constraint-intensity mode, with the what-if calculator switching conservation areas and listed buildings off: the estimated planning premium falls from 13.8–32.1% to 4.7–11%

Spatial economics

Planning Constraint Visualiser

BriefPut a number on what planning constraint costs, area by area, from open data rather than from opinion.

TypeScript PMTiles Python OLS regression

Code and a walkthrough on request.

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Have an idea?

If you want one of these built for you

Almost every project above began as somebody describing a problem out loud. If you have one, there is a page for what it costs, how it runs and what you leave with.

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Next step

Bring the idea. I will tell you what it takes.

If you want to know how someone works, look at their code rather than their claims — ask for access and I will walk you through any build on this page, the code, the decisions, and what I would do differently. And if you have something you want built, thirty minutes is usually enough to know whether I am the right person for it. I will say so if I am not.

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