Server defines 6 tools with complete input schemas and descriptions. Naming follows verb_noun convention (udp_discover, udp_send, udp_receive, udp_status, udp_trust, udp_log). Descriptions are present and substantive (avg ~120 chars), exceeding the 10-char minimum. However, several parameters lack descriptions (e.g., udp_trust 'peer_id' has description but 'action' enum values are not formally constrained in schema). Output schemas are not documented, callers cannot predict response structure. Error handling is minimal; no recovery guidance or actionable error messages visible in code. Security concerns: trust state persisted to disk without encryption; no rate-limit enforcement visible despite claims in tool descriptions.

• Document output schemas for all 6 tools. Specify field names, types, and structure (e.g., udp_discover returns {peers: [{id, ip, port, hostname}], count}). Include pagination fields if results can exceed 50 items.
• Add enum constraints to udp_trust 'action' and udp_log 'direction' parameters in the JSON Schema. Replace free-form strings with formal enums: action: ['approve', 'revoke', 'list'], direction: ['sent', 'received', 'system', null].
• Implement actionable error messages. When rate limit is hit, return 'Rate limit exceeded for peer {peer_id}: {current_count}/{max_exchanges_per_hour} exchanges in the last hour. Try again after {reset_time}.' When trust check fails, return 'Peer {peer_id} not trusted. Call udp_trust with action=approve to add them.'
• Encrypt trusted-peers.json at rest using a server-side key (e.g., via crypto.createCipher or a vault). Restrict file permissions to 0600. Document the encryption scheme in README.
• Add per-tool idempotency hints. Mark udp_discover, udp_receive, udp_status, udp_log as read-only (idempotent). Mark udp_send and udp_trust as destructive/state-changing. Use tool annotations (readOnlyHint, destructiveHint) if MCP protocol supports them.