Four tools with complete input schemas and descriptions. Naming follows verb_noun pattern (get_, list_, search_). Descriptions are adequate (100-200 chars) but lack actionable context for LLM selection. Parameters have types and descriptions, but lack constraints (enums, ranges). Output is unstructured JSON strings rather than typed objects. No error recovery guidance. Missing tool annotations (readOnlyHint). Baseline: 549 production tools average 18-char names, 194-char descriptions, 72-char param annotations, this server meets naming and description length but lacks depth and structure.

• Return typed dicts instead of JSON strings. Change all tools to return structured objects: get_config → {content: str, type: str, md5: str, appName: str, createTime: str, createUser: str}. list_configs → {items: [{dataId, group, type, md5}], total: int, pageNo: int, pageSize: int}. This eliminates LLM parsing overhead and enables type-safe chaining.
• Add enum constraints to parameters. Declare search: Literal['blur', 'accurate'] in schema. Add minItems/maxItems for page_size (1-500). Add minimum: 1 for page_no. This prevents hallucinated invalid values.
• Enhance descriptions with selection context and dependencies. E.g., 'List all configs in a namespace. Call this to discover available configs before fetching a specific one with get_config. Use search_configs if you need to find configs by content.' Add similar hints to search_configs explaining when it's preferred over list_configs.
• Add tool annotations. Decorate all four tools with readOnlyHint: true in the tool definition. This signals to agents that these tools are safe to call without side effects.
• Implement error categorization. Return structured error responses: {error: str, code: str, category: 'retryable'|'user_fixable'|'fatal', suggestion: str}. E.g., 'Nacos error 404: Config not found. Verify dataId and group are correct. Call list_configs to see available configs.' This guides agent recovery.

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

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