BrainRegion exhibits significant definition quality gaps. Tool descriptions are present but often generic (e.g., 'Review a document through an 8-stage pipeline' lacks specificity on what 'review' entails or when to use it vs. review_plan/review_code). Input schemas are visible but sparse: most tools have 1-2 parameters with minimal constraint documentation. No output schemas are documented anywhere in the codebase. Parameter descriptions are terse (e.g., 'Document content to review' for review_document's 'document' param). Error handling guidance is absent, no recovery hints or categorization. Tool naming follows verb_noun convention (good), but composition issues exist: review_document, review_plan, review_code are near-duplicates that could be unified. The 'mode' parameter in consult_problem lacks an enum constraint despite accepting specific values ('debugging', 'architecture', etc.). No tool declares permissions, audit trails, or idempotency guarantees. Baseline: 549 production tools average 194 chars for descriptions; BrainRegion averages ~60 chars. 100% of A+ tools document return types; BrainRegion documents none.

• Document output schemas for all 18 tools. Specify field names, types, and whether results are paginated. Example: 'Returns {advice_id: string, consultant_name: string, recommendation: string, confidence: 0-1}'.
• Expand parameter descriptions to 50-150 chars. Include format hints, size limits, and examples. E.g., 'Document content to review (plain text or markdown, max 50KB). Include code snippets, design rationale, or requirements as context.'
• Convert 'mode' in consult_problem to an enum: ['debugging', 'architecture', 'performance', 'simplicity', 'game_design', 'challenge', 'planning']. Add description: 'Consultation focus area. Determines which expert consultants are engaged.'
• Add error handling guidance to tool descriptions. E.g., 'If document exceeds size limit, returns error with max_size. Retry with a smaller excerpt or split into multiple reviews.'
• Unify review_document, review_plan, review_code into a single 'review_content' tool with a 'content_type' enum parameter (document|plan|code). Reduces tool count and clarifies when each review path applies.

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

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