Elvis Saravia urges users to build their own AI agent harnesses

Elvis Saravia, on X as @omarsar0, says users should build their own agent harnesses rather than rely on company-built ones.

He argues that company-built harnesses can change hidden constraints without notice, and that users need full control over guardrails, capabilities and patches as models become more capable. He also notes that many full-stack AI companies are building their own harnesses. The report is a single social media post, and no company response or independent evidence is cited.