Yttrigen
Blog
Methodology and architecture writing for regulated software teams.
Platform & architecture
ValidKeep ecosystem, governed SDLC landscape, assurance profiles, and ysbuild authoring.
8 min read
How ValidKeep, Profiles, Landscape, and Ysbuild Fit Together
Four configurable layers, two paths, one deterministic verify gate with no LLM in the audit loop.
10 min read
From Sandbox to Production: The Governed SDLC Landscape
Landscape profile defines where work happens in Git; promotion is mechanical, not ad hoc.
9 min read
Assurance Profiles: Choosing (or Customizing) Your Validation Grammar
One ValidKeep engine, many rigor packs; landscape and assurance compose orthogonally.
8 min read
The Impartial Auditor: ValidKeep Verify Without AI
Profile-driven verification with no LLM control path; the gate that keeps authoring tools honest.
11 min read
Restricted Agents: How Ysbuild Authors Atomic Specs Under ValidKeep Rules
Optional Yttrigen in-house LLM roles per atomic file type; verify remains the common gate.
Validation methodology
OQ at capability boundaries, PQ under load, fractal modules, and verification architecture.
9 min read
Module Architecture and Verification: The ValidKeep Atomic Model
Introduction to High Assurance notation; fractal, OQ, and PQ in linked articles.
10 min read
The Fractal Module Model: ERP Root to TypeScript Leaf
Same algebra at every depth; practical decomposition patterns included.
9 min read
OQ at the Capability Boundary
Operational Qualification exercises only the published capability perimeter.
8 min read
PQ Under Load: Proving Lx Resilience
Performance Qualification probes implementation stress separate from OQ boundary proof.
Regulated AI
Deterministic build strategies and agent governance in GxP contexts.