Three tools with minimal descriptions (10-30 chars each) and no parameter descriptions. All schemas present but trivial (empty objects for 2/3 tools). No error handling guidance, no output schema documentation, no security considerations. Tool names follow verb_noun pattern but descriptions lack context for LLM selection. No indication of idempotency, side effects, or recovery paths.

• Expand tool descriptions to 50-200 characters. Example: 'Get the current buffer content as an array of strings, one per line. Use this to read the active Vim buffer before making edits. Returns empty array if buffer is empty.'
• Add parameter descriptions. For replace_current_buffer_content: 'content: Array of strings representing buffer lines. Each element is one line. Empty array clears the buffer. Max 1M lines.'
• Document output schemas in tool descriptions or as structured metadata. E.g., 'Returns: {lines: string[], lineCount: number, encoding: string}'
• Add error handling guidance. E.g., 'If buffer is read-only, returns error with message: "Buffer is read-only. Use :set modifiable to enable editing."'
• For replace_current_buffer_content, add a dry-run parameter or document that this operation is irreversible and should be confirmed before execution.