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New tools: Clay, Outreach, ZoomInfo, Close, Pendo, Similarweb, Supermetrics, AirOps, Crossbeam, and Coupler.io. Each includes a zero-dependency Node.js CLI and an integration guide. Updates REGISTRY.md with new tool index entries, categories, and MCP-enabled tools list. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>