Server provides 6 utility tools with complete input schemas and descriptions. All tools are READ_ONLY and well-scoped. Naming follows verb_noun convention (generate, encode_decode, hash, jwt_decode, json_utils, regex_test). Descriptions are present and adequate (avg ~100 chars), meeting the 10-1024 char baseline. All parameters have type definitions and descriptions. However, output schemas are not formally documented, responses are returned as text content without structured field definitions. Error handling is basic (try-catch with error messages) but lacks recovery guidance. No tool annotations (readOnlyHint, etc.) despite all being read-only. Parameter descriptions could be more prescriptive about constraints and formats.

• Document output schemas for all tools. E.g., generate returns {results: string[]}; hash returns {hashes: {algorithm: string, value: string}[]}. This enables LLM planning.
• Add readOnlyHint: true to all tool definitions via server.tool() annotations to signal safety and retry semantics.
• Split json_utils into separate tools: format_json, minify_json, validate_json, diff_json, extract_json_path. Each should have a single responsibility.
• Enhance error messages with recovery guidance. E.g., 'Invalid JWT format (expected 3 parts separated by dots). Verify the token is a valid JWT.' instead of bare error.
• Refine parameter descriptions to include constraints inline. E.g., 'Length in characters (minimum 4, maximum 256)' instead of 'Length for hex/nanoid types'.