This MCP server has significant definition quality gaps. Three tools are implemented (brc_lookup, code_search, find_function_definition), but all suffer from incomplete parameter descriptions and missing output schema documentation. The source code shows tool definitions via server.tool() calls, but parameter descriptions are truncated with '...' placeholders in the visible code. Tool names are reasonably verb-forward (brc_lookup, code_search, find_function_definition), but lack the clarity needed for LLM selection. Error handling exists (try/catch blocks, error responses) but error messages are often generic. No tool annotations (readOnlyHint, destructiveHint) are present despite all being READ_ONLY tools. Output schemas are not documented, callers cannot know what fields to expect. The brc_lookup tool shows the best structure with category-aware searching and identifier normalization, but lacks comprehensive parameter documentation.

• Add complete, non-placeholder parameter descriptions for all three tools. For code_search: document valid repository names, file extension format (with/without dot), and what the search syntax accepts (regex, substring, exact match?). For find_function_definition: clarify if it searches function declarations only or also calls. For brc_lookup: document accepted identifier formats ('1', '0001', 'BRC-1', etc.) explicitly.
• Document output schemas for all three tools. Example: brc_lookup returns TextContent with file content; code_search returns an array of match objects with fields (file, line_number, matched_text, repository); find_function_definition returns locations with (file, line_number, function_signature). Without this, LLMs cannot chain calls.
• Add tool annotations via server.tool() method or response metadata. All three tools are read-only, mark them with readOnlyHint=true so LLMs know they are safe to retry and require no confirmation.
• Replace placeholder ellipsis (...) in parameter descriptions with actual constraints. E.g., brc_identifier description should be: 'The BRC identifier in any format: numeric (1, 123), zero-padded (0001, 0123), or prefixed (BRC-1, BRC-0001). The tool normalizes all formats.' This removes guesswork.
• Enhance error messages for code_search to include: 'No matches found for query in <repository>. Try a different query or omit repository_name to search all BSV repos.' Similarly for find_function_definition, suggest checking function name spelling.
• Add discovery helper. Document what repositories are available via environment variable BSV_REPOS_DIR. Consider adding a tool like list_bsv_repositories() or document the available names in the code_search and find_function_definition descriptions.