https://pantheonlabs.co.uk/blog/ Technical writing on governed AI agents and multi-tenant isolation. en-gb Wed, 02 Sep 2026 09:00:00 +0000 https://pantheonlabs.co.uk/blog/the-boundary-is-the-product-decision.html https://pantheonlabs.co.uk/blog/the-boundary-is-the-product-decision.html Wed, 02 Sep 2026 09:00:00 +0000 PANTHEON runs on FastAPI, Postgres and React, which tells you nothing. The part worth describing is a rule about which file may import which — and the fact that a machine refuses the commit when it is broken. https://pantheonlabs.co.uk/blog/a-wallpaper-you-cannot-profile.html https://pantheonlabs.co.uk/blog/a-wallpaper-you-cannot-profile.html Tue, 01 Sep 2026 09:00:00 +0000 TerraFirma draws the real sky under your desktop icons. The interesting problem was not the astronomy — it was that the code could not be measured until it was moved. https://pantheonlabs.co.uk/blog/what-it-takes-to-let-an-agent-act.html https://pantheonlabs.co.uk/blog/what-it-takes-to-let-an-agent-act.html Tue, 01 Sep 2026 09:00:00 +0000 Wiring a model to a prompt is a demo. The distance between that and something you can put other people's money through is four specific mechanisms, none of them the model. https://pantheonlabs.co.uk/blog/the-guard-that-could-not-see.html https://pantheonlabs.co.uk/blog/the-guard-that-could-not-see.html Mon, 31 Aug 2026 09:00:00 +0000 A test that stops absolute dates entering a suite had been passing for weeks. It was passing because its regex could only see one of the two ways a date gets written.