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This week in Claude.

A weekly digest for Claude Code builders. Model updates, releases, and notable tools. Every Monday morning.

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Past issues

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April 20, 2026
This week in Claude: Opus 4.7, Claude Design, and an MCP flaw affecting 200k servers
Opus 4.7 dropped this week with real benchmark gains for coding agents — and three breaking API changes you need to handle before upgrading. Anthropic

MockHero — generate realistic test data with one API call. 156 field types, 22 locales, JSON/CSV/SQL output.