Single tool 'hybrid_search' has a well-structured schema with 9 parameters, all typed and described. Tool name is action-oriented (verb_noun pattern). Description is clear and specific (145 chars), explaining what the tool does and when to use it (bm25_weight tuning). Schema includes proper constraints (enums for 'detail', min/max for 'limit' and 'bm25_weight'). However, output schema is not documented, LLMs cannot predict the response structure. Error handling is not visible in the provided code. Parameter descriptions are good but could be more prescriptive about format/constraints (e.g., glob pattern syntax for file_pattern). No tool annotations (readOnlyHint, destructiveHint, idempotentHint) present.

• Document the output schema explicitly. Include field names, types, and structure. Example: {results: [{file: string, line: number, snippet: string, score: number, type: 'code'|'doc'|'memory'}, ...], total: number, next_cursor?: string}
• Add readOnlyHint annotation to the tool schema: 'readOnlyHint': true. This signals to LLMs that the tool is safe to call without side effects.
• Constrain 'node_types' to an enum of valid values: ['function', 'class', 'interface', 'method', 'type', 'variable', 'constant', 'module']. Remove the open-ended 'etc.' from the description.
• Add format and example to 'file_pattern' and 'exclude_pattern' descriptions: 'Glob pattern (e.g., *.ts, src/**/*.py, docs/*). Supports *, **, ?, [abc].'
• Document error cases and recovery: 'If no results found, try broadening the query, reducing node_types filter, or setting bm25_weight=0.5 for hybrid search. If glob pattern is invalid, check syntax: * matches any chars in a segment, ** matches across segments.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry