RepeaterBook MCP has four well-named tools with clear purposes and complete input schemas. All tool names follow verb_noun convention (search_repeaters, get_repeater, sync_repeaters, clear_local_data). All four tools have descriptions (range 90-178 chars, within the 10-1024 baseline). All parameters have type definitions and descriptions. However, output schemas are NOT documented, we can infer responses exist but cannot see the return type definitions in the source code provided. Error handling is not visible. Tool descriptions lack dependency hints or recovery guidance. Parameter descriptions are present but generic; some could be more instructive about constraints and formats. The server demonstrates solid foundational quality but lacks depth in output documentation and error guidance expected of production tools.

• Add explicit output schema documentation for all four tools. For search_repeaters, document the repeater object schema (fields: source_id, frequency, offset, mode, location, distance_km, etc.). For get_repeater, document the full repeater record schema. For sync_repeaters, document the sync_result schema (counts, truncation flags). For clear_local_data, document the success confirmation response.
• Implement error recovery guidance. E.g., search_repeaters: 'If no repeaters found, try: (1) expanding radius_km, (2) removing restrictive filters (bands, modes), (3) calling sync_repeaters first to ensure local data is current.' get_repeater: 'If source_id not found, call search_repeaters to discover valid repeater IDs.' sync_repeaters: 'If API rate limit is hit, retry in 60 seconds; if country/state is invalid, call a discovery tool to list valid regions.'
• Add confirmation flow to clear_local_data. Either (1) split into clear_local_data_preview (returns summary of what will be deleted) + clear_local_data_confirm (requires confirmation token from preview), or (2) add a 'confirm' boolean parameter with clear warning in description.
• Constrain numeric parameters: radius_km min=0.1, max=10000; document any API limits on result count. For country/state/region, replace 'e.g. United States' with enum values or a reference to a discovery tool (e.g., 'Call list_countries first to see valid values').
• Add pagination to search_repeaters. Include limit (default 20, max 100), offset (or cursor), and total_count in response. Document: 'Returns up to 20 repeaters sorted by distance. Use offset to paginate.'

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

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