Anthropic launches agent-on-agent commerce marketplace; Mythos exposes DeFi exploit chains

Anthropic released a test marketplace for agent-to-agent commerce, letting Claude-built agents transact with other agents on behalf of human users. Its new Mythos model is uncovering multi-step DeFi exploit chains and infrastructure-layer vulnerabilities that traditional smart-contract audits miss, and Anthropic separately partnered with Xero to embed Claude in accounting workflows via the JAX (Just Ask Xero) superagent.