AgentShield exposes 9 tools with basic definitions and input schemas, but lacks depth across multiple quality dimensions. All tools have descriptions (20+ chars), and all have input schemas with typed parameters, which prevents a failed score. However, descriptions are generic and lack LLM-optimization guidance; parameter descriptions are minimal; output schemas are undocumented; error handling is not visible in tool definitions; and no security annotations (readOnlyHint/destructiveHint) are present despite clear risk classifications. The tool set itself is problematic: 'bash', 'network', and 'external_api' are dangerous tools that should not be exposed as-is without substantial guardrails, multi-step confirmation, and dry-run patterns. The whitelist model is architecturally sound, but the tool interface itself needs refinement.

• Document the output schema for each tool. For 'read': return {content: string, path: string, encoding: string}. For 'list': return {entries: [{name: string, type: 'file'|'directory', size?: number}], directory: string, total: number}. For 'search': return {matches: [{file: string, line_number: number, line_text: string}], total_matches: number}.
• Add error recovery guidance to each tool description. Example: 'If file not found, call list() first to confirm the path exists. If path is outside sandbox, returns error with sandbox root path.'
• Implement dry-run mode for 'bash', 'network', and 'external_api'. Add an optional 'dry_run: boolean' parameter that returns what would be executed without executing it. For 'bash', return the parsed command and environment; for 'network', return the request details; for 'external_api', return the payload.
• Add multi-round-trip request (MRTR) confirmation for destructive operations. Before 'bash' executes any command, 'write' creates files, or 'edit' modifies files, request user confirmation via MRTR pattern with {result: 'input_required', input_schema: {confirm: {type: 'string', enum: ['yes', 'no']}}}.
• Enhance parameter descriptions with format hints and constraints. E.g. 'path: file or directory path relative to sandbox root; must not contain .. or start with /; max 256 chars'. 'pattern: glob pattern (*, ?, [abc]) or literal text; max 256 chars'. 'command: shell command (bash); no sudo, no redirects to /dev/null or /dev/zero; max 1024 chars'.
• Add tool annotations to tool definitions. Mark 'read', 'search', 'list' with readOnlyHint: true. Mark 'write', 'edit' with destructiveHint: true. Mark all tools with idempotentHint: true only if they actually are idempotent (only 'read', 'search', 'list', 'glob' qualify).