Single tool with minimal definition quality. Tool name 'condense_context_tree' lacks action verb prefix (should be 'summarize_' or 'condense_'). Description is 73 chars but lacks WHEN to use, prerequisites, or output structure guidance. Input schema present but parameter 'text' has NO description, violates critical rule that every parameter needs a description. No output schema documented, LLMs cannot plan downstream calls. No error handling guidance. Tool does one thing but definition is severely underdocumented.

• Add description to 'text' parameter: 'The input text to condense (required, any length). Tool will split into chunks of ~50 words, summarize each, and build a hierarchical tree.'
• Document output schema in tool description: 'Returns object with tree_depth (int), leaf_count (int), original_word_count (int), summary_word_count (int), compression_ratio (float), root_summary (string), leaf_summaries (array of strings).'
• Rename tool to 'summarize_text_hierarchically' or 'build_context_summary_tree' to start with a clear action verb matching baseline patterns.
• Expand tool description to 150-200 chars: explain when to use (long conversational traces, execution logs), what it does (recursive clustering into abstraction nodes), and what it returns (multi-level summary tree with compression metrics).
• Add error handling: validate text is non-empty, return actionable error if text < 10 words (e.g., 'Text too short for hierarchical summarization; minimum 10 words required.').