15 tools with complete input schemas and descriptions, but significant quality gaps. Tool names lack action verbs (catalog, score_preview, hash_preview are noun-heavy; only 3 of 15 start with clear verbs like 'decode'). Descriptions are brief (avg ~80 chars) and lack context on WHEN to use each tool or what happens on error. Parameters mostly typed but lack constraints (enums, ranges, patterns). No output schemas documented. No error handling guidance. email_grade and email_template lack 'required' arrays, leaving parameter optionality ambiguous. No tool annotations (readOnlyHint, destructiveHint). Pricing info in descriptions is helpful but not a substitute for proper parameter documentation.

• Rename tools with action verbs: 'list_tools' (catalog), 'grade_email_subject' (score_preview), 'hash_text_preview' (hash_preview), 'validate_json' (json_tools), 'test_regex' (regex_tester).
• Document output schemas for all tools. E.g., email_grade should return {score: number, fixes: [{issue: string, suggestion: string}], ...}.
• Add 'required' arrays to email_grade and email_template inputSchemas to clarify which parameters are mandatory.
• Add error handling guidance to descriptions: 'If domain is invalid, returns 400 with available alternatives. If API times out, retry with exponential backoff.'
• Add tool annotations: set readOnlyHint=true for all 15 tools to signal they are safe to call without user confirmation.