Portable agent stacks

A guided series of 4 articles on Portable agent stacks.

Model-Agnostic Coding Agents: One CLI Across Many LLMs — Terminal coding agents like Aider, OpenCode, and Cline decouple the agent harness from the model, so switching LLM providers becomes one line of config instead of a whole new tool. Here's how the abstraction works and why you'd use it.
Model portability is now a governance feature for AI agents — A fast-moving model market changes the job of agent architecture. Portability now belongs in governance: prompts, tool contracts, evals, and fallback paths should survive a model swap.
Open-weight access now belongs in your AI supply chain — Anthropic’s July 2026 open-weights statement and fresh U.S. policy pressure around Chinese open models change what portability has to cover. For production agents, fallback planning now needs policy-aware routing, not a model dropdown.
Open weights are now part of your AI disaster-recovery plan — The late-July fight over Chinese open-weight models exposed a new failure mode for production teams: losing access to a model family for reasons outside your roadmap. Treat open-weight failover like DR, classify workloads now, and rehearse the switch before policy or licensing changes make the call for you.