Single tool 'ghaudit_scan' has a reasonable description (97 chars) but critical gaps in schema completeness and parameter documentation. Input schema shows only 'target' parameter with basic type and description, but lacks validation constraints (format, pattern, min/max length). No output schema is documented, LLMs cannot infer the structure of returned JSON findings. The tool description does not explain when to use it, what prerequisites exist (e.g., 'requires GitHub org export file'), or how to interpret results. No error handling guidance provided. Tool naming is acceptable (verb_noun pattern) but the implementation conflates two concerns: scanning a file/directory AND auditing GitHub security posture, which should be clearer in the description.

• Document the complete output schema: { findings: [{ id: string, severity: 'high'|'medium'|'low', where: string, description?: string }], score: number, tool: string }. Include field descriptions and data types.
• Add validation constraints to the 'target' parameter: specify that it must be a valid file or directory path, max length 1024 chars, and describe what happens if the path does not exist or is not readable.
• Expand the tool description to 150-200 chars: 'Audit a GitHub organization's security posture from an export file. Scans for branch protection rules, 2FA enforcement, and secrets exposure. Returns findings with severity levels (high/medium/low) and locations.'
• Implement error handling that returns structured error messages: { error: string, code: 'FILE_NOT_FOUND'|'INVALID_FORMAT'|'PERMISSION_DENIED', suggestion?: string }. Guide LLMs on recovery steps.
• Migrate from STDIO to HTTP+SSE or Streamable HTTP transport to enable remote accessibility and compatibility with hosted MCP clients.