This server defines 4 tools with mixed quality. All tools have names and descriptions, but parameter quality varies significantly. Two tools (aws_region_audit, s3_cloudwatch_report) have well-structured input schemas with type definitions, constraints, and descriptions. Two tools (list_recent_reports, read_report_summary) appear to be inferred from Java backend code rather than directly visible in the MCP TypeScript source, which limits confidence in their actual schema implementation. Output schemas are entirely undocumented, there is no evidence of what these tools return, making it impossible for LLMs to plan downstream composition. Error handling and recovery guidance are absent. The server invokes shell workflows and backend services, which is appropriate for a local audit tool, but lacks the polish needed for production agent use.

• Document the complete output schema for each tool. Example: 'aws_region_audit returns {status: string, report_id: string, findings: [{service: string, region: string, issue: string}], generated_at: ISO8601}'. This enables LLMs to plan downstream steps and extract IDs for read_report_summary.
• Add service enum to aws_region_audit: services parameter should declare the full list of valid 'MCP-supported audit service keys' as an enum constraint in the schema, not a vague description.
• Enhance tool descriptions with WHEN and WHAT context. Example for aws_region_audit: 'Runs AWS regional compliance audit across EC2, RDS, S3, and more. Use this first to identify security gaps, then call read_report_summary to review findings. Returns report_id and summary stats. Typical latency: 2 - 5 minutes.'
• Implement error recovery guidance. When a region is invalid, return: 'Invalid region: got "eu-fake-1". Valid regions: [us-east-1, us-west-2, ...]. Try again with a valid region.' When a bucket doesn't exist, return: 'Bucket "my-typo-bucket" not found. Did you mean: my-bucket, my-test-bucket?'
• Add pagination to list_recent_reports. Current schema allows limit (1 - 20), but no offset or cursor. Return {reports: [...], total_count: N, next_cursor: string | null} to support agents iterating over large result sets.
• Verify that list_recent_reports and read_report_summary are actually registered in mcp/src/index.ts with full schemas. If they are Java-backend-only, either register them in TypeScript or remove them from this evaluation.