# lisp_session_start

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<!-- date: 2026-05-20 -->
<!-- prompt-guidelines: priv/prompts/README.md -->
<!-- audience: mcp-tools-list -->
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<!-- mcp-tools: lisp_session_start -->
<!-- mcp-profiles: mcp_session_start_description -->

<!-- PTC_PROMPT_START -->
Creates a new empty stateful PTC-Lisp session. Use the returned `session_id` with `lisp_session_eval`.
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