This MCP server has severe definition quality gaps. While tool names follow verb conventions (add, get_config, get_greeting, reference_tool_output, access_resource), the schemas and descriptions are minimal or absent. Most critically: (1) Parameters lack detailed descriptions explaining constraints, formats, or expected values, only bare type information is visible. (2) No output schemas are documented, leaving LLMs unable to plan downstream tool calls or extract structured data. (3) Descriptions are brief but present, however they lack context on WHEN to use each tool or what prerequisites exist. (4) The 'reference_tool_output' and 'access_resource' tools appear to blend concerns, the former is an introspection/memory mechanism while the latter accesses MCP resources, but neither has clear guidance on inter-tool dependencies. (5) Error handling and recovery paths are not visible in the tool definitions. Per-tool analysis reveals average naming (get_*, add) but critically underdeveloped schemas and descriptions that do not meet production baselines.

• Document the output schema for each tool. For 'add', return {type: 'object', properties: {result: {type: 'number', description: 'The sum of a and b'}}}. For 'get_config', list all configuration fields (e.g., {type: 'object', properties: {version: {type: 'string'}, status: {type: 'string'}, ...}}).
• Expand parameter descriptions with constraints and examples. E.g., 'tool_id (string): The identifier of a previously executed tool in this session. Format is generated by the agent at tool invocation time. Example: tool_123. If invalid or not found, returns an error suggesting available tools from the execution history.'
• Clarify 'reference_tool_output' as a memory/introspection mechanism. Document that extract_path uses JSONPath syntax (e.g., '$.field.nested[0]') and returns null if the path does not exist or the tool_id is not in the execution history.
• Add actionable error responses. E.g., for 'access_resource': 'Client "slack" not registered. Available clients: [ "github", "jira", "linear" ]. Register the client first via server configuration.'
• For 'get_config', explain when to call it ('Call at the start of planning to discover available features and constraints') and what configuration data it surfaces (version, supported formats, rate limits, etc.).
• Split 'access_resource' into two clear tools if they serve different purposes: 'get_resource' (read-only resource retrieval from an MCP server) and 'reference_prior_tool_output' (memory/introspection), each with its own schemas and error handling.