Single tool with adequate naming and basic schema, but lacks depth in parameter descriptions and has no documented output schema. The tool name 'get_recent_journal_entries' follows verb_noun convention appropriately. However, parameter descriptions are minimal (e.g., 'Optional start date for filtering journal entries' lacks format specification), and there is no explicit output schema documentation visible in the code. The tool description itself is functional but brief (60 chars). Error handling exists (try/except with success/error fields) but provides no recovery guidance. No parameter validation or constraint declarations (e.g., date format, limit bounds). The implementation mixes FastAPI HTTP endpoint with FastMCP tool definition, both are exposed but only the FastMCP tool is relevant to MCP scoring.

• Document the output schema explicitly: 'Returns a dict with keys: success (bool), result (list of journal entries with fields: name, date, move_type, amount_total, journal_id, partner_id) or error (str if success=false).'
• Add format and bounds to parameter descriptions: start_date: 'ISO 8601 date (YYYY-MM-DD) for inclusive filtering. Must be <= end_date if both provided.' end_date: 'ISO 8601 date (YYYY-MM-DD) for inclusive filtering.' limit: 'Max records to return (1 - 1000, default 20). Large limits may degrade performance.'
• Expand tool description to 150 - 200 chars: 'Fetches recent posted journal entries (account.move) from Odoo accounting module. Useful for AI-assisted audit, reconciliation, and analysis. Optionally filter by date range. Returns structured entry data with amounts, parties, and types.'
• Enhance error messages with recovery guidance: Instead of {'success': False, 'error': str(e)}, return {'success': False, 'error': 'Authentication failed. Check ODOO_URL, ODOO_DB, ODOO_USERNAME, and ODOO_PASSWORD environment variables.'}
• Add input validation: Parse start_date/end_date as ISO 8601; reject if invalid. Validate 1 <= limit <= 1000. Return clear constraint-violation errors to help LLM self-correct.