A new command-line tool, mcp-probe, has been developed to test Model Context Protocol (MCP) servers by automatically calling their tools, resources, and prompts with generated arguments and validating the results against declared schemas. Initial tests on official Node MCP servers revealed that most failures were due to bugs in the testing client itself, rather than the servers. The primary issue identified across the servers was the absence of descriptive fields for schema properties, which prevents automated tools from correctly inferring argument types like file paths or resource types, leading to errors. AI
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IMPACT This tool could improve the reliability and interoperability of MCP-based AI systems by identifying schema-related issues.
RANK_REASON Release of a new CLI tool for testing MCP servers.
