TokenLighten MCP server has 3 tools with basic definitions but significant quality gaps. Tool names follow verb_noun convention (read_file, edit_file, search_files), which is good. However, parameter descriptions are sparse or missing entirely. The 'targets' and 'content' parameters in read_file lack descriptions. The 'edits' and 'artifact' parameters in edit_file are minimally described. search_files has better parameter coverage but 'scope' and 'budget' descriptions are vague. No output schemas are documented anywhere in the provided source. Error handling is not visible. The server lacks tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite having clear read-only vs write operations. Descriptions are present but generic (194 chars baseline suggests room for improvement). Overall, definitions are functional but fall short of production-grade quality.

• Document output schemas for all three tools. Example: read_file should return {content: string, format: string, encoding?: string, metadata?: object}. edit_file should return {path: string, edits_applied: number, verification_status: string}.
• Expand parameter descriptions to 50 - 150 characters each. For 'targets' in read_file: 'Array of specific targets to extract (e.g., sheet names in XLSX, file paths in ZIP, page ranges in PDF). If omitted, returns entire file content.'
• Add tool annotations: read_file and search_files with readOnlyHint=true; edit_file with destructiveHint=true. This signals to agents which tools are safe to retry and which require confirmation.
• Add error recovery hints in tool descriptions. E.g., edit_file: 'If a file is locked, try search_files to find an alternative or contact the file owner. Supports dry-run via a separate parameter to preview changes before applying.'
• Specify array item schemas. For 'edits' in edit_file, document the structure: {type: 'replace'|'insert'|'delete', range?: {start: number, end: number}, text?: string}. For 'queries' in search_files, clarify if each query is a string or {pattern: string, type: 'text'|'symbol'}.