casr

Converts AI coding-agent session files between providers so a session can be resumed in a different tool.

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casr is a command-line tool that converts an AI coding-agent session, such as one started in Codex or Gemini, into the native session format of a different provider like Claude Code, so the conversation can be resumed there instead. It auto-detects which provider owns a session, verifies the converted file by reading it back, and prints the exact resume command. It's for developers who regularly switch between different coding-agent tools.

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Problem & pain-point mapping
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