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Civic data

Constilumen

Constilumen is an open, sourced record of American constitutional history: the amendments, the landmark decisions, the tests of rights and powers and the language of each era, from 1787 to now. The record takes no position, and every figure links to the source it came from.

2026
Product, Web, Data
In-house product
Astro, Terminal CMS
Live
Product
Civic data
Visit constilumen.com ↗Constilumen, as it looks today

27

Amendments

77

Landmark decisions

48

Tests of rights and powers

The challenge

Constitutional history usually arrives as argument. A student, a reporter or a voter who wants to know what the Court decided, what the people amended and when a right was tested gets commentary first and the record second, if at all.

The solution

A neutral record, built as data: every amendment and landmark decision, the events that tested rights and powers, executive orders counted year by year, and how often two dozen constitutional terms appeared in print across two centuries. Each entry links to where it came from, and the whole record is published as open data.

Analysis is kept apart, in Positions: signed pieces that state a one-sentence claim, rate their own confidence, give the strongest case against themselves and list their sources. They are written in Terminal’s CMS and never mixed into the record.

The results

Constilumen is live at constilumen.com: a timeline, eras, cases, amendments and the language of each era, readable in light and dark, with an editorial standard that says how it stays neutral.

Services rendered

Research and sourcing, data design, the brand (the Beam mark, app icon and a complete kit), the interface and its drawn data art, a static build, and the Positions pipeline from Terminal’s CMS.

Iain Feeney

Let’s build something
worth documenting.

© 2026 Iain Feeney