Server defines 8 tools with consistent naming patterns (verb-noun: score_*, get_*, list_*, validate_*, submit_*). All tools have descriptions present (10-100 chars range). Input schemas are visible with type declarations and parameter descriptions. However, there are significant gaps: (1) Output schemas are not documented, no return type specifications visible in code, (2) Parameter descriptions are minimal and generic (e.g., 'The workflow identifier' provides no guidance on valid formats, constraints, or examples), (3) No error handling guidance in descriptions, error responses exist in code but descriptions don't tell LLMs how to recover, (4) No pagination support despite tools returning lists, (5) Tool descriptions lack context about when to use each tool vs. alternatives (e.g., score_workflow vs score_batch distinction is unclear). The error handling infrastructure is solid (SentinelAPIError with actionable fields like 'action', 'retry_after_seconds', 'upgrade_url'), but this context is buried in code, not surfaced in tool descriptions. Per Agentic Tool Pattern 'tool-description', descriptions should state WHAT, WHEN, and any prerequisites, these descriptions are more transactional/API-focused than LLM-optimized.

• Document output schemas for all tools. For score_workflow, specify: 'Returns {ok: boolean, result?: {score: number, model_version: string, ...}, error?: {...}}'. For list_workflows, document the workflow entry structure and total count. Reference these in tool descriptions.
• Enhance parameter descriptions with constraints. E.g., change 'The workflow identifier' to 'Workflow identifier (string, required). Valid values: fraud_detection, prior_auth, eligibility. Call list_workflows() to discover available workflows.'
• Add discovery hints in tool descriptions. E.g., score_workflow: 'Use to score a single workflow. For multiple items, use score_batch() for better performance. If you only have a workflow name, call list_workflows() first to get the identifier.'
• Add pagination context. If list_workflows can return >50 items, add 'limit' and 'offset' parameters (or cursor) and document: 'Returns up to 50 workflows per page. Use offset/limit or cursor for pagination.'
• Document error recovery in descriptions. E.g., score_workflow: 'Returns {ok: true, result: {...}} on success. On error, returns {ok: false, error: {code, message, action?, retry_after_seconds?}}. If error.action is "configure_credentials", check API key. If "rate_limited", wait error.retry_after_seconds before retrying.'
• Clarify tool distinctions. Add: score_batch description: 'Preferred over multiple score_workflow calls when scoring 2-25 items. Reduces latency. Continue on error behavior controlled by continue_on_error param (default true).' And distinguish get_limits (plan quota) from get_usage (consumption so far).