Chrome Native Messaging Host

Description

Implements Chrome's native messaging protocol (4-byte length prefix + JSON over stdin/stdout). Creates a Unix domain socket server at a secure path and proxies MCP messages between Chrome extensions and local Claude Code instances. Has its own debug log at ~/.claude/debug/chrome-native-host.txt (ant-only). Launched only when Chrome calls the registered native messaging host binary.

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Sources

src-20260420-6c8c272379b4