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Claude Code 2.1.284 reconnects failed MCP servers and steadies resumed agents

Anthropic's Claude Code release adds /mcp reconnect all, waits briefly for MCP servers to reconnect when a resumed session calls a tool, and fixes malformed stream and retry failures. It also supports Sonnet 5.5, but those model capabilities are a separate announcement.

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Anthropic · September 28, 2026

Read the original: Claude Code v2.1.284 release notes

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