Debugging MCP servers is painful. I built a CLI to make it testable.
Published:Dec 28, 2025 13:18
•1 min read
•r/ArtificialInteligence
Analysis
This article discusses the challenges of debugging MCP (likely referring to Multi-Chain Processing or a similar concept in LLM orchestration) servers and introduces Syrin, a CLI tool designed to address these issues. The tool aims to provide better visibility into LLM tool selection, prevent looping or silent failures, and enable deterministic testing of MCP behavior. Syrin supports multiple LLMs, offers safe execution with event tracing, and uses YAML configuration. The author is actively developing features for deterministic unit tests and workflow testing. This project highlights the growing need for robust debugging and testing tools in the development of complex LLM-powered applications.
Key Takeaways
Reference
“No visibility into why an LLM picked a tool”