A deterministic first-pass filter for unsupported claims in LLM output, computed without calling another LLM. Not a standalone hallucination detector. A spec plus reference implementation, shipped as touchstone-mcp.
python mcp verification methodology touchstone llm llm-evaluation measurement-standard model-context-protocol mcp-server ai-output-verification clarethium model-independence
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Updated
Oct 8, 2026 - Python