AgentDevKit.Adk defines 6 tools with mixed quality. Naming is generic (DelegationTool, FunctionTool, McpTool, SensitiveTool) and lacks action verbs, they describe wrapper patterns rather than user-facing actions. Descriptions are present but minimal (10-50 chars), providing little context for LLM selection. Schemas are partially visible: DelegationTool and FunctionTool show explicit JSON schemas; McpTool delegates to MCP client schemas; FileReadTool and DeleteDatabaseTool lack visible schema definitions in the provided code. Parameter descriptions are sparse, most params lack detail on format, constraints, or dependencies. Error handling is basic (try-catch with generic messages). No evidence of pagination, output field documentation, or recovery guidance. The toolkit is a meta-framework for composing agents and tools, not a domain-specific tool suite, which limits applicability of standard tool patterns.

• Rename tools to action verbs: DelegationTool → delegate_to_agent, FunctionTool → invoke_function, McpTool → call_mcp_tool, SensitiveTool → execute_with_approval, FileReadTool → read_file, DeleteDatabaseTool → delete_database.
• Expand descriptions to 100-200 chars explaining WHAT each tool does, WHEN to use it, and WHAT it returns. E.g., 'Delegates a task to a specialized sub-agent. Use when the current agent lacks expertise. Returns the sub-agent's response as a string.'
• Add explicit parameter descriptions: 'prompt' → 'The task to delegate (string, 1-2000 chars)'; 'sessionId' → 'Optional session ID (string) to maintain worker memory across calls'; 'city' → 'City name (string, required) to look up weather or info'.
• Implement error classification: return {status, message, retryable, suggestion}. E.g., 'status: error, message: Delegation failed, retryable: true, suggestion: Retry with a simpler prompt.'
• Document output schemas for all tools. E.g., FileReadTool should return {content: string, size_bytes: int, encoding: string}; DeleteDatabaseTool should return {status: string, deleted_at: ISO8601}.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry