Single tool 'bc_list_companies' has a reasonable description (95 chars) but lacks a visible input schema in the provided source. The description is adequate but generic, it does not explain WHEN to call this tool vs alternatives, what fields are returned, or pagination behavior. No parameter descriptions visible. Error handling and output schema documentation are absent from the provided code.

• Add explicit input schema to bc_list_companies (even if empty, document it as {}). Show JSON Schema with types and descriptions for any parameters (e.g., filter_by_name, limit, offset).
• Expand tool description to 150 - 250 chars: explain that this lists all accessible companies, when to call it (e.g., before selecting a company context), and what fields are returned (company_id, name, display_name).
• Document output schema: return type should be {companies: [{id, name, display_name, ...}], total_count, has_more}. Specify pagination limits (e.g., max 100 per page).
• Add error handling guidance: 'If auth fails, check tenant_id and credentials. If permission denied, verify user has Business Central access.'
• Consider adding a second tool (e.g., get_company_details) to fetch metadata for a specific company, enabling richer agent workflows.

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

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