{ "env_name": "devops_sandbox", "env_url": "http://localhost:8000", "llm_provider": "openai", "llm_model": "gpt-4o-mini", "llm_api_key": "", "temperature": 0.2, "max_tokens": 256, "max_steps_per_task": 8, "system_prompt": "You are an expert DevOps engineer responding to a production incident. A Node.js Express backend is broken and you must diagnose and fix it using bash commands. The app directory is /app. It contains config files, route handlers, middleware, .env, and old logs. NOT everything is broken — focus on actual root causes, not red herrings. Respond ONLY with a JSON object: {\"command\": \"\"}. Use sed, echo, cat, grep — never interactive editors.", "app_structure": { "files": [ "/app/config.json", "/app/server.js", "/app/package.json", "/app/.env", "/app/routes/users.js", "/app/routes/data.js", "/app/routes/status.js", "/app/middleware/logger.js", "/app/middleware/rateLimit.js", "/app/logs/error.log" ], "bug_files": ["config.json", "routes/users.js", "routes/data.js"], "red_herrings": [".env", "middleware/logger.js", "middleware/rateLimit.js", "routes/status.js", "logs/error.log"] }, "tasks": [ { "task_name": "easy", "severity": "LOW", "bugs_count": 1, "description": "The app fails to bind to the expected port. Fix it so the app starts on port 3000 and GET /health returns 200.", "bugs": [ { "file": "config.json", "type": "misconfiguration", "description": "Port is set to 9999 instead of 3000" } ], "verifiers": [ { "name": "Config Port Fixed", "verification_type": "file_content", "file_path": "/app/config.json", "expected_content": "3000" }, { "name": "Health Endpoint", "verification_type": "http_check", "endpoint": "/health", "expected_status": 200 } ] }, { "task_name": "medium", "severity": "MEDIUM", "bugs_count": 2, "description": "App crashes on startup. Fix the crash AND a config issue so all endpoints up to /api/users work.", "bugs": [ { "file": "config.json", "type": "misconfiguration", "description": "Port is set to 9999 instead of 3000" }, { "file": "routes/users.js", "type": "syntax_error", "description": "Missing closing parenthesis on router.get() call causes SyntaxError on import" } ], "verifiers": [ { "name": "Config Port Fixed", "verification_type": "file_content", "file_path": "/app/config.json", "expected_content": "3000" }, { "name": "Syntax Error Fixed", "verification_type": "file_content", "file_path": "/app/routes/users.js", "expected_content": "});" }, { "name": "Users Endpoint", "verification_type": "http_check", "endpoint": "/api/users", "expected_status": 200, "expected_body_contains": "\"users\"" } ] }, { "task_name": "hard", "severity": "HIGH", "bugs_count": 3, "description": "Multiple issues: app crashes, endpoints return errors. Misleading logs present. Fix ALL root causes.", "bugs": [ { "file": "config.json", "type": "misconfiguration", "description": "Port is set to 9999 instead of 3000" }, { "file": "routes/users.js", "type": "syntax_error", "description": "Missing closing parenthesis on router.get() call" }, { "file": "routes/data.js", "type": "async_bug", "description": "Missing 'await' before fetchRecordsFromDB() — returns Promise instead of data" } ], "red_herrings": [ { "file": "logs/error.log", "description": "Old error log with misleading entries about port fallback and database connections" }, { "file": ".env", "description": "Environment file with DB_HOST and CORS settings — not actually used by the app" }, { "file": "middleware/rateLimit.js", "description": "Working rate limiter — might look suspicious but has generous limits" } ], "verifiers": [ { "name": "Config Port Fixed", "verification_type": "file_content", "file_path": "/app/config.json", "expected_content": "3000" }, { "name": "Syntax Error Fixed", "verification_type": "file_content", "file_path": "/app/routes/users.js", "expected_content": "});" }, { "name": "Await Added", "verification_type": "file_content", "file_path": "/app/routes/data.js", "expected_content": "await fetchRecordsFromDB" }, { "name": "Health Endpoint", "verification_type": "http_check", "endpoint": "/health", "expected_status": 200 }, { "name": "Users Endpoint", "verification_type": "http_check", "endpoint": "/api/users", "expected_status": 200, "expected_body_contains": "\"users\"" }, { "name": "Data Endpoint", "verification_type": "http_check", "endpoint": "/api/data", "expected_status": 200, "expected_body_contains": "\"records\"" } ] } ] }