Three tools with basic schemas and descriptions, but significant gaps in parameter documentation and output schema clarity. Tool names follow verb_noun convention (write_to_terminal, read_terminal_output, send_control_character), which is good. However, descriptions lack depth about when to use each tool, prerequisites, and return value structure. Parameter descriptions are minimal (e.g., 'The letter corresponding to the control character' lacks format constraints). No documented output schemas. Error handling guidance is absent. The server lacks idempotency guarantees, confirmation patterns for destructive operations, and actionable error messages.

• Document output schemas for all three tools. E.g., write_to_terminal should return {type: 'object', properties: {lines_output: integer, output_sample: string, command_status: 'sent|failed'}}.
• Add format and bounds constraints to parameters: 'linesOfOutput' (integer, 1 - 1000, default 25), 'letter' (string, 1 - 2 chars, uppercase or special char like ']').
• Expand tool descriptions to include when to use each tool and what to expect. E.g., 'write_to_terminal: Sends a command to iTerm and returns the number of output lines. Use this to execute shell commands. WARNING: This is destructive, verify the command before sending.'
• Add error handling guidance: 'If the command fails (non-zero exit), read_terminal_output to see error messages. If the terminal is unresponsive, send_control_character with 'C' to interrupt.'
• Implement a confirmation pattern for write_to_terminal: require a 'confirm' boolean parameter or add a 'dry_run' mode that shows what would be executed without actually running it.