Wall Street just lost $285B because of 13 Markdown files (martinalderson.com)

On February 3, 2026, the technology sector experienced a staggering $285 billion loss in market value, primarily triggered by the introduction of Anthropic's new legal tool, a modest collection of 13 Markdown files hosted on GitHub. This incident, dubbed the "SaaSpocalypse," underscores a profound disruption within the Software as a Service (SaaS) industry, where agentic tools are beginning to replicate and potentially render traditional SaaS models obsolete. The concern is that agentic workflows are not just alternatives to SaaS; they may actually diminish the need for these platforms altogether, especially in sectors like legal review where users can interact directly with AI agents rather than navigating complex user interfaces of existing software. The implications of this shift are significant. As agentic systems become more capable of providing tailored solutions by utilizing source material, traditional SaaS providers might struggle to maintain their relevance. For instance, while companies that serve as systems of record are currently secure due to their valuable data, many legacy platforms are hindered by outdated APIs and infrastructure that restrict their adaptability in an agent-first landscape. The emergence of API-first solutions tailored for agentic access indicates a shift in how software is developed and utilized, suggesting that a new wave of products designed for seamless integration and interaction with AI could redefine industry standards, making traditional SaaS models increasingly vulnerable.