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Secure BEAM sandbox runtime for LLM code mode and MCP aggregation. Run concurrent LLM/tool clients safely while agents orchestrate approved tools, call upstream MCP/OpenAPI servers, and transform data.

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ptc_runner priv prompts json-system.md
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priv/prompts/json-system.md 

# Text Mode (JSON variant) System Prompt



System prompt for text mode structured JSON output.



<!-- version: 2 -->

<!-- date: 2026-05-18 -->

<!-- prompt-guidelines: priv/prompts/README.md -->

<!-- audience: text-mode-json-system-prompt -->

<!-- budget: target<=1000 bytes, hard<=1500 bytes -->

<!-- changes: Wrap in XML tag -->

<!-- used-by: PtcRunner.SubAgent.Loop.TextMode -->

<!-- profiles: text output mode, JSON variant -->

<!-- shown-in: provider system message unless a custom system prompt replaces it -->

<!-- composed-with: json-user.md user message; json-error.md on retry -->



<!-- PTC_PROMPT_START -->



<output_format>

Return only valid structured JSON matching the expected format. No markdown, no explanation.

</output_format>



<!-- PTC_PROMPT_END -->