This is a chaos-engineering/fault-injection toolkit, not a production service tool. Tool definitions are minimal but intentional: names are action-oriented (ping, delay, hang, disconnect, duplicate_response, malformed_message), descriptions explain failure modes clearly, and schemas are present for parameterized tools. However, descriptions are terse (10-50 chars), parameter descriptions lack detail, and output schemas are undocumented. The server's purpose (testing MCP resilience) is niche, it deliberately triggers failures rather than providing business value. Scoring reflects this specialized domain: acceptable for testing, but would fail production tool standards.

• Document output schemas for all tools. E.g., ping returns {status: 'ok', timestamp: ISO8601}; delay returns {delayedMs: number, requestId: string}. This enables LLMs to chain results.
• Expand tool descriptions to 100 - 200 chars. Explain the failure mode being tested and when a test harness should invoke each tool. E.g., 'Simulate a hung server that never responds unless the request is cancelled. Use this to test client timeout and cancellation handling.'
• Add enum descriptions to malformed_message variant parameter. E.g., 'missing-jsonrpc: omit the jsonrpc field to test strict parsing; invalid-jsonrpc-version: send jsonrpc=1.0 to test version validation; result-with-error: return both result and error fields to test error precedence.'
• Document expected errors and recovery paths. E.g., 'hang tool will timeout after 30s; client should trigger cancellation. disconnect tool closes the transport; client should detect connection loss and reconnect.'
• Rename tools to use action verbs: 'return_duplicate_response', 'inject_malformed_message', 'trigger_disconnect' for clarity and consistency with verb_noun pattern.