Stay sovereign as AI harnesses and agent architectures move.
The ecosystem of agent harnesses (Claude Code, Cursor, OpenCode, Goose, Codex) evolves every single week. This radar filters out vendor marketing and hype to focus on what matters: real capability shifts, context engineering, and keeping your company completely independent.
What is inside each issue?
No endless link lists or sponsored press releases. Every Wednesday, you receive a dense, 5-minute practical breakdown across four critical topics:
1. Harness Benchmarks & Shifts
We test major updates across CLI harnesses, IDE extensions, and background agent runners. We report breaking changes, context compaction performance, and BYOS (Bring-Your-Own-Subscription) support.
2. Context Engineering & Second Brains
How to structure Markdown files, procedural SOPs, and system context so that any compatible AI harness can execute tasks autonomously without hallucinating or losing thread history.
3. Sovereign Layers Above Harnesses
Why relying on proprietary SaaS agent platforms creates lock-in, and how to build a thin layer of tools (MCP), safety boundaries, and role definitions that you can take anywhere.
4. Field Notes from Real Deployments
Real learnings from small-business workflows: automating bookkeeping prep, lead qualification, solar prospect maps, and asynchronous founder operations.
Written by Samuel Michelot
Software engineer, co-founder of MosaLingua (sold), and creator of YAIBOS. Building low-overhead sovereign AI systems from Catalonia.
Frequently asked questions
How often will I receive an email?
Exactly once a week, typically on Wednesday morning. If there is no high-quality signal to share during a quiet week, I will not send an email just to fill your inbox.
Is it really 100% free?
Yes. There are no paid tiers, no sponsored banner ads, and no affiliate kickbacks. It is written to share real-world engineering progress and sovereign AI patterns.
Can I easily unsubscribe?
Yes, in a single click. Every issue contains an immediate unsubscribe link at the bottom with zero confirmation hoops.