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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-error.md
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priv/prompts/json-error.md 

# Text Mode (JSON variant) Error Feedback



Error feedback for text mode JSON validation failures.



<!-- version: 2 -->

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

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

<!-- audience: text-mode-json-error-feedback -->

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

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

<!-- variables: error_message, invalid_response -->

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

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

<!-- shown-in: provider user feedback message after JSON parse/shape failure -->

<!-- composed-with: json-system.md and json-user.md from the original attempt -->



<!-- PTC_PROMPT_START -->



<error_feedback>

Response was not valid JSON or had the wrong shape.



Error: {{error_message}}



Response:

{{invalid_response}}



Return valid JSON matching:

{{expected_format}}

</error_feedback>



<!-- PTC_PROMPT_END -->