Anthropic launches Claude Tag

Anthropic launched Claude Tag. The official announcement anchored the cluster, with adjacent trade press unpacking seven distinct ways to give instructions to Claude Code, and a Japanese security firm (NRI Secure) rolling out a Mythos-tier vulnerability diagnostic service. Rather than one flagship story, this is the Claude ecosystem thickening across three layers at once — official product, developer guidance, and partner services. That kind of concurrency is the signal, not the individual pieces. Commercial depth is quietly compounding.