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XGEN Preview2026.08.19

XGeny — from an AI that answers to an AI agent that works

The XGEN agent takes another step forward. XGeny is a new agent runtime with memory and a workspace of its own, able to find the tools it needs — and build them when they do not exist — to carry work forward.

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Tech NoteThe Harness Diary2026.05.17

The model that wrote the answer was also grading it (Part 4)

When one model writes an answer and then judges it, generation method and pass criteria share a context. Splitting doing the work from accepting it.

Tech NoteThe Ontology Diary2026.05.12

We had put a multi-hour build in a cache (Part 3)

As builds stretched into hours we replicated job state into a shared cache. When it expired we could not recover cancellation and resume state.

Tech NoteThe Harness Diary2026.05.08

It installed, but we couldn't call it the same run (Part 3)

We packaged a workflow as a wheel and installed it elsewhere. Calling a tool exposed every assumption that only held inside the product.

Tech NoteThe GS Certification Diary2026.05.08

80 defect reports in GS certification taught me what a defect actually is (Part 1)

Three weeks of GS certification testing produced 80 defects, but fewer than half were code bugs. The rest were behaviours a user could not confirm.

Tech NoteThe Ontology Diary2026.05.03

What we truncated to save context was the evidence (Part 2)

We added multi-turn search to follow relations. Context grew, so we cut tool results to 500 characters, and long sources never reached synthesis.

Insight · Plateer AI Labs