01 / Portfolio
viggomeesters.com becomes an evidence-first portfolio.
The site is reorganised around working software, public source, explicit proof, and a clearer professional through-line: data migration plus agent systems.
Work / build / learn
Things I’ve made move.
A selected timeline of projects, repositories, systems, and ideas. Newest first; every entry points to something you can inspect.
Selected milestones
2025—now · public evidence only
15 milestones shown
02 / Method
Evidence-Based Work
A practical argument for treating screenshots, tests, readbacks, and source links as part of delivery—not as decoration after the fact.
03 / Agent context
A source-backed context pack for buying a home in the Netherlands.
The Nederlandse Huizenkoop Agent Context turns a fragmented process into versioned, reviewable guidance with explicit source and freshness metadata.
04 / Delivery system
Go Workflow Stack
A public reference implementation for turning goals into bounded tasks, gates, ledgers, and verifiable shipping evidence.
05 / Architecture
Database types for agent-first systems
A decision guide for choosing storage by access pattern, auditability, and operational constraints instead of defaulting to one fashionable database.
06 / Data structures
JSONL Vault Spike
A bounded experiment in append-friendly, inspectable data structures for agent-first knowledge systems.
07 / SAP delivery
SAP knowledge becomes typed, sourced agent context.
SAP Agent Context packages functional design, field mapping, migration, workflow, integrations, and analytics guidance without customer content.
08 / Knowledge tooling
Mega Vault Viewer
A read-only browser for large markdown vaults, designed to make structure and content navigable without turning the viewer into another editor.
09 / Obsidian
Complex files become inspectable inside the vault.
A family of read-only Obsidian viewers for Alteryx, XML, YAML, CSV, JSONL, EML, and other structured formats.
10 / Agent workflow
The workflow becomes routable, reusable, and multi-agent.
Hermes, Codex, and reusable skills connect a command bus to repo context, durable procedures, and proof-first completion gates.
11 / Starter
Life OS Starter
A plug-and-play Obsidian vault that gives people a practical starting point for markdown-first knowledge work with agent support.
12 / Contract
Vault Schema
A machine-readable schema contract, template set, and validation guard for keeping structured Obsidian vaults dependable.
13 / Shared tools
Agent Scripts
Repeated agent operations move out of individual repositories and into a shared, inspectable toolkit.
14 / Capture
Obsidian meets Raycast.
A focused extension for capturing and retrieving Obsidian notes without breaking flow to navigate the vault manually.
15 / Data migration
Minimal ETL Modeler starts with one stubborn idea.
Data mapping and validation should be understandable to the people doing the migration. The project grows into a browser-local workbench for visual transforms, QA, and accepted/rejected exports.
The line continues
Built work over borrowed claims.
New projects, public repositories, useful writing, and meaningful career changes can join the timeline when there is something concrete to show.