Good morning. It's Monday, March 30th, 2026. Here's your agent platform briefing — three genuinely new stories from the past 48 hours.

**Claude Mythos: Anthropic's most powerful model accidentally leaked** — Late last week, a configuration error in Anthropic's content management system left a folder containing roughly three thousand assets publicly accessible — including a draft launch blog post for a new model called Claude Mythos. Anthropic confirmed the project in a Thursday statement to Fortune, acknowledging that engineers have finished training the model and are already piloting it with early customers. According to the leaked draft, Mythos will introduce a fourth product tier — codenamed "Capybara" — sitting above the current Opus tier and priced accordingly. Internal testing reportedly shows it is dramatically better than Claude 4.6 Opus at programming, academic reasoning, and cybersecurity tasks. That last area raised flags: the leaked post itself warned that the model "presages an upcoming wave of AI that can exploit vulnerabilities in ways that far outpace the efforts of defenders," and noted Anthropic will restrict early access to security organizations to give them a head start hardening their systems. Cybersecurity stocks dropped sharply on the news. No public release date has been announced, but the cat is well out of the bag.

**MCP hits 97 million monthly downloads — and Perplexity just quit it** — As of March 25th, the Model Context Protocol crossed 97 million monthly SDK downloads, cementing its position as the primary integration layer for agentic AI applications. That's up from roughly 10,000 public servers just over a month ago, and the metric is now being cited by Forbes, Anthropic, and enterprise analysts as confirmation that MCP has graduated from experimental standard to actual infrastructure. But the milestone comes with an interesting counter-signal: at a recent developer conference, Perplexity's CTO Denis Yarats announced his company is abandoning MCP internally — citing context window consumption and clunky authentication — in favor of traditional APIs and CLIs. The irony is notable, since Perplexity simultaneously added MCP remote connector support for its Pro and Enterprise subscribers just a week ago. The gap between enterprise adoption numbers and developer-in-the-trenches frustration appears to be widening.

**OpenClaw goes global: CNN covers China's obsession as ClawCon Tokyo kicks off** — A CNN Business piece published yesterday captures the cultural moment: at Chinese tech meetups, lobster balloons and lobster plushies are everywhere — a riff on the project's claw mascot — and attendees are lining up not for the crustaceans but for hands-on OpenClaw demos. The article calls it "China's latest tech obsession," noting adoption has continued to explode at the consumer level even as the Chinese government issued formal security guidance for users and banned installation at state enterprises. Today marks ClawCon Tokyo, the first major in-person OpenClaw community event in Asia, coming hot on the heels of the 2026.3.28 release — which shipped Plugin Approval Hooks, xAI Grok search integration, and Discord and iMessage bindings. The project now shows 339,000 GitHub stars and has been described in a New York Times opinion piece this weekend as the most significant shift in personal computing since the smartphone.

That's your briefing for Monday, March 30th. Big week ahead — Artemis II launch window opens tomorrow.