{"name":"inspect_tool_server","title":"Inspect a callable MCP server","description":"Live-inspect one active, provider-verified, operator-curated public MCP server from the 404.directory catalog. Returns only the remote read-only tools approved for gateway execution, including their current descriptions, JSON input schemas, and annotations. Use after search_tools and before the first invoke_registered_tool call, or whenever arguments may have changed. This operation does not execute a remote business tool.","use_when":"Live-inspect one active, provider-verified, operator-curated public MCP server from the 404.directory catalog. Returns only the remote read-only tools approved for gateway execution, including their current descriptions, JSON input schemas, and annotations. Use after search_tools and before the first invoke_registered_tool call, or whenever arguments may have changed. This operation does not execute a remote business tool.","href":"/tools/inspect_tool_server","kind":"404_service_tool","version":"0.10.2","input_schema":{"type":"object","properties":{"id_or_slug":{"type":"string","minLength":1,"maxLength":128,"description":"Catalog server UUID or slug returned by search_tools, for example 'microsoft_learn_mcp'."}},"required":["id_or_slug"],"$schema":"http://json-schema.org/draft-07/schema#","additionalProperties":false},"annotations":{"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true},"invocation":{"mcp":{"endpoint":"/mcp","method":"tools/call","name":"inspect_tool_server"},"rest":null}}