Frequently Asked Questions about Reexpress MCP Server

Q: What is the Reexpress MCP Server? A: It’s a drop-in solution that adds statistical verification to your LLM pipelines, providing a reliable second opinion for AI workflows, especially in software development and data science.

Q: Which LLMs are currently supported? A: Currently, it’s primarily designed for Claude 3.7 Sonnet from Anthropic. Support for more models and platforms is planned.

Q: How does it work? A: It uses a pre-trained Similarity-Distance-Magnitude (SDM) estimator to check the LLM’s response and calculate a robust estimate of predictive uncertainty.

Q: What is SDM estimator? A: SDM estimator is an ensemble model consist of gpt-4.1-2025-04-14, o4-mini-2025-04-16, and text-embedding-3-large, along with the output from Cladue 3.7, and calculates a robust estimate of the predictive uncertainty against a database of over 100,000 training examples, calibrated against over 100,000 calibration examples.

Q: Is my data sent to third parties? A: Data is only sent via standard LLM API calls to Anthropic and Azure/OpenAI. The SDM estimator processing is done locally.

Q: Can I adapt the model to my specific tasks? A: Yes, you can use the ReexpressAddTrue or ReexpressAddFalse tools to adapt the model to your specific needs.

Q: What are the main use cases? A: Software development, data science, search and QA, and complex LLM pipelines are the main use cases.

Q: What is reasoning with SDM verification? A: It enables LLMs to refine their answers, determine if they need additional resources, or recognize when they’ve reached an impasse.

Q: How does it relate to UBOS? A: Reexpress MCP Server enhances the capabilities of UBOS by providing a crucial layer of verification for AI Agents, ensuring that AI-driven decisions are based on trustworthy information.

Q: Where can I find the documentation? A: See the provided links for INSTALL.md, CONFIG.md, HOW_TO_USE.md, GUIDELINES.md, and FAQ.md.

Q: What kind of data can be provided to LLM through Reexpress MCP Server? A: You can explicitly specify files via the file-access tools ReexpressDirectorySet() and ReexpressFileSet().