Caveman prompting has one rule: why use many words when few do the trick? It saves tokens on the way in and on the way out. Push it too far, though, and the output falls apart. So how far is too far? Nobody has benchmarked it yet, and that question opens our conversation with James Barney, Head of Forward Labs at MetLife. James spends his days connecting new AI capabilities to old business problems across dozens of regulatory regimes, and he still finds time to push code. He explains how the FinOps Foundation's AI working group took on the most basic question: which model for which workload, and why the answer always comes down to cost, speed, and accuracy. We get into Anthropic's launch pricing for Fable, why a million tokens is easy to price and hard to explain, and why every stakeholder eventually tells you what they really care about once you name the wrong North Star.

Coding agents work best in a predictable environment, but they can also help build it. When agents help create and maintain the configurations they use for their own jobs, both humans and agents benefit from better tools in a virtuous feedback loop. This article shares an open-source dotfiles setup that pairs Unix tooling with AGENTS.md and Agent Skills to optimize terminal and Python AI development.

What happens after you’ve built your first MCP server and actually have to make it work in the real world? In this episode, James dives into the more advanced side of MCP: observability, evals, tool design, code mode, authentication, and the challenges that appear once agents start using your server at scale. We also get into how AWS thinks about MCP across roughly 16,000 APIs, why inefficient tool design often gets blamed on MCP itself, and whether the future could involve more constrained, human-reviewable alternatives to full code mode.