Single tool 'exfilwatch_scan' has a clear, concise description (89 chars) and a properly typed input schema with one parameter. However, the parameter 'target' lacks a description entirely, violating the requirement that every parameter must have a description explaining what it controls. The output schema is not documented, LLMs cannot infer the structure of the JSON findings returned. No error handling guidance is provided. The tool name uses a verb prefix ('exfilwatch_scan') which is acceptable but generic; 'scan_logs_for_exfiltration' would be more explicit about the action and domain. Overall, the tool meets minimal definition standards but falls short of production quality due to missing parameter descriptions and undocumented output structure.

• Add a description to the 'target' parameter: 'Path to a newline-delimited JSON log file (one event per line) or "-" to read from stdin. Each line must be valid JSON with fields: src, dst, proto, query.'
• Document the output schema in the tool description or as a separate schema field: 'Returns JSON object with keys: tool (string), findings (array of {detector, severity, src, dst, score, summary}), score (integer count of findings).'
• Add error handling guidance to the description: 'If the file is not found or contains invalid JSON, the tool returns an error. Verify the file path and format before retrying.'
• Rename the tool to 'detect_dns_exfiltration' or 'scan_logs_for_exfiltration' to make the action and domain explicit.
• Add parameter constraints: specify that 'target' must be a valid file path or '-', and document the expected JSON schema for log events (required fields: src, dst, proto, query).