Single tool with minimal schema and description. Tool name 'get_circuit_status' is appropriately verb-prefixed, but the description (18 chars) falls below the 20-char minimum and lacks context on WHEN to use it or WHAT it returns. Input schema present but lacks parameter descriptions, the 'provider' param has no guidance on valid values, format, or examples. No output schema documented. No error handling guidance. No security considerations for provider validation.

• Expand tool description to 50 - 150 chars: 'Check the circuit breaker state (CLOSED, HALF-OPEN, OPEN) for an LLM provider. Use this to determine if a provider is available before routing requests. Returns the current state and failure count.'
• Add description to 'provider' parameter: 'The LLM provider name (e.g., openai, anthropic, cohere). Must be a registered provider in the gateway.'
• Document output schema in tool description or as a separate field: 'Returns {provider: string, state: string (CLOSED|HALF-OPEN|OPEN), failure_count: int, last_failure_time: float}'
• Add error handling guidance: 'If provider is not found, returns error with list of available providers. If state cannot be determined, returns error with recovery steps.'
• Consider adding an enum constraint or validation for 'provider' to prevent hallucinated provider names.