{
  "schema_version": 2,
  "model": "deepseek/deepseek-v4-flash-0731",
  "outcome": {
    "status": "running"
  },
  "usage": {
    "input_tokens": 17468,
    "output_tokens": 1406,
    "cache_read_tokens": 10240,
    "cache_creation_tokens": 0,
    "cost_usd": 0.0009951600000000001
  },
  "messages": [
    {
      "role": "user",
      "content": "Build the service in the contract appended below on this blank host. Speed matters, but only a durable deployment can win.\n\n\nThe controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors.\n\n# Service contract\n\n# Durable service contract\n\nExpose an HTTP service on port 8080. `GET /health` must return status 200 and\nthe exact body `ready`. `PUT /records/<id>` stores the request body and returns\nstatus 204. `GET /records/<id>` returns the exact stored body with status 200.\n\nThe blank guest includes a dormant `builder-app.service` deployment slot whose\nexecutable path is `/opt/builder/app.py`. Supply the application there and start\nthe existing unit. Stored records must survive restart of that service and a\nhost reboot. The deployment must return without agent help after reboot."
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Let me analyze this task. I need to build a durable HTTP service on port 8080 with specific endpoints, and deploy it via an existing `builder-app.service` unit whose executable path is `/opt/builder/app.py`. Records must survive service restart and host reboot.\n\nLet me start by exploring the environment.\n\nLet me plan:\n1. Explore the host - check for the existing service unit, Python availability, etc.\n2. Write the app at `/opt/builder/app.py`.\n3. Persist records durably (to disk, e.g., SQLite or files).\n4. Start/enable the service.\n5. Verify.\n\nLet me start.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Let me analyze th",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "is task. I need",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " to build a durable HT",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "TP service",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " on port",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " 8080 with",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " specific end",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "points,",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " an",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "d deploy it via an",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " existing `builder",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "-app.service` unit who",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "se executable path is",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " `/op",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "t/builder/app.py`. Records mu",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "st survive service restart and",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " host reboot.\n\nLet me start by explori",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ng",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " the environ",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ment.\n\nLet me plan:\n1",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": ". Explore th",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "e host - chec",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "k for the existing se",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "rvice unit, P",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ython availabil",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ity, etc.\n2. W",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "rite the app at `/opt",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "/builde",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "r/app.py`.\n3.",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " Persist r",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ecord",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "s durably (",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "to disk, e.g",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "., SQLite or f",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "iles).\n4. Start/",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "enable the ser",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "vice.\n5. Verify.\n\nLet me start.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "I'll start by exploring the environment and understanding the deployment slot.\n\n"
        },
        {
          "type": "tool_use",
          "id": "chatcmpl-tool-bbd6fa9228e69a33",
          "name": "Bash",
          "input": {
            "command": "systemctl cat builder-app.service 2>&1; echo \"---STATUS---\"; systemctl status builder-app.service 2>&1 | head -20; echo \"---PYTHON---\"; which python3; python3 --version",
            "description": "Inspect existing service unit and Python"
          }
        },
        {
          "type": "tool_use",
          "id": "chatcmpl-tool-b03ca8352c25af30",
          "name": "Bash",
          "input": {
            "command": "ls -la /opt/builder/ 2>&1; echo \"---\"; ls -la /root/ 2>&1 | head -30",
            "description": "List /opt/builder and home"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "chatcmpl-tool-bbd6fa9228e69a33",
          "content": "# /etc/systemd/system/builder-app.service -> /nix/store/bkhc7c1djj4z9s51r616fqfbc55zwdvs-unit-builder-app.service/builder-app.service\n[Unit]\nAfter=network.target\nDescription=Agent-built application slot\n\n[Service]\nEnvironment=\"LOCALE_ARCHIVE=/nix/store/54jg0kk0cn5h7j19r0l8x36fmbfywwjj-glibc-locales-2.42-67/lib/locale/locale-archive\"\nEnvironment=\"PATH=/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/bin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/bin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/bin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/bin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/bin:/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/sbin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/sbin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/sbin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/sbin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/sbin\"\nEnvironment=\"TZDIR=/nix/store/2nndxyf3phkb5aggxm3c16sapa0f49kz-tzdata-2026c/share/zoneinfo\"\nExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n---STATUS---\n× builder-app.service - Agent-built application slot\n     Loaded: loaded (/etc/systemd/system/builder-app.service; enabled; preset: ignored)\n     Active: failed (Result: start-limit-hit) since Fri 2026-08-14 15:02:51 UTC; 11s ago\n   Duration: 63ms\n Invocation: 06d1cf0078634ab892bee52596860561\n    Process: 659 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 659 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.1M\n        CPU: 32ms\n\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Start request repeated too quickly.\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nAug 14 15:02:51 builder-three systemd[1]: Failed to start Agent-built application slot.\n---PYTHON---\n/run/current-system/sw/bin/python3\nPython 3.14.6\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "chatcmpl-tool-b03ca8352c25af30",
          "content": "ls: cannot access '/opt/builder/': No such file or directory\n---\ntotal 24\ndrwx------  5 root root 4096 Aug 14 15:02 .\ndrwxr-xr-x 17 root root 4096 Aug 14 15:02 ..\ndrwxr-xr-x  3 root root 4096 Aug 14 15:02 .config\ndrwxr-xr-x  3 root root 4096 Aug 14 15:02 .local\n-rw-r--r--  1 root root   48 Aug 14 15:02 .nix-channels\ndrwx------  2 root root 4096 Aug 14 15:02 .ssh\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Let me check the python version available to the service (nix python 3.14.6) and the python3 in PATH. Both are 3.14.6. Good.\n\nI'll write a Python HTTP server using stdlib (http.server or a simple socket server). Records must survive restart and reboot, so persist to a directory on disk, e.g., /var/lib/builder/records/ or /opt/builder/data/. Let me use a durable path like /var/lib/builder.\n\nLet me create the app. Use BaseHTTPRequestHandler.\n\nLet me write app.py.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Let me check",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " the python ve",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "rsion availabl",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "e to the s",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ervice",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " (",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "nix pyth",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "on 3.14",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": ".6)",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " and the pyt",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "hon3 in PA",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "TH. Bot",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "h ar",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "e 3",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": ".14.6. G",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ood.\n\nI'll w",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "rite a Python HTT",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "P ser",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ver using stdl",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ib (http.server",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " or a simp",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "le socke",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "t server). Re",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "cords must s",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "urvive r",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "estart and",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " reboo",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "t, so pers",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ist to a",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " directory o",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "n disk, e.g.,",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " /var/li",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "b/builder/records/ or",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " /opt/builder/data/. Le",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "t me",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " use a dura",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "ble path like /",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "var/lib/build",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "er.\n\nLet me c",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "reate",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " the app. Use BaseHTT",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "PRequestHandler.",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "\n\nLet me write app.py.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "Now I understand the setup. The service unit uses the Nix Python 3.14.6 with `ExecStart=/nix/store/.../python /opt/builder/app.py`. I'll write the app using stdlib `http.server` and persist records to a durable location on disk.\n\n"
        },
        {
          "type": "tool_use",
          "id": "chatcmpl-tool-9fde23a1ea182417",
          "name": "Bash",
          "input": {
            "command": "mkdir -p /opt/builder /var/lib/builder/records; echo done",
            "description": "Create app and data directories"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "chatcmpl-tool-9fde23a1ea182417",
          "content": "done\n"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "tool_use",
          "id": "chatcmpl-tool-acfdce9c1e1cad56",
          "name": "Write",
          "input": {
            "content": "#!/usr/bin/env python3\n\"\"\"Durable HTTP service for the builder-app deployment slot.\"\"\"\n\nimport os\nimport re\nimport threading\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nfrom urllib.parse import urlparse\n\nDATA_DIR = \"/var/lib/builder/records\"\nLOCK = threading.Lock()\n_ID_RE = re.compile(r\"^/?records/([^/]+)/?$\")\n\n\nclass Handler(BaseHTTPRequestHandler):\n    protocol_version = \"HTTP/1.1\"\n\n    def _send(self, status, body=b\"\", content_type=\"text/plain\"):\n        self.send_response(status)\n        self.send_header(\"Content-Type\", content_type)\n        self.send_header(\"Content-Length\", str(len(body)))\n        self.end_headers()\n        if body:\n            self.wfile.write(body)\n\n    def _parse_id(self):\n        path = urlparse(self.path).path\n        m = _ID_RE.match(path)\n        return m.group(1) if m else None\n\n    def do_GET(self):\n        path = urlparse(self.path).path\n        if path == \"/health\":\n            self._send(200, b\"ready\")\n            return\n        rid = self._parse_id()\n        if rid is None:\n            self._send(404, b\"not found\")\n            return\n        fpath = os.path.join(DATA_DIR, rid)\n        with LOCK:\n            if os.path.isfile(fpath):\n                with open(fpath, \"rb\") as f:\n                    body = f.read()\n                self._send(200, body)\n            else:\n                self._send(404, b\"not found\")\n\n    def do_PUT(self):\n        rid = self._parse_id()\n        if rid is None:\n            self._send(404, b\"not found\")\n            return\n        length = int(self.headers.get(\"Content-Length\", 0))\n        body = self.rfile.read(length) if length else b\"\"\n        fpath = os.path.join(DATA_DIR, rid)\n        tmp = fpath + \".tmp\"\n        with LOCK:\n            os.makedirs(DATA_DIR, exist_ok=True)\n            with open(tmp, \"wb\") as f:\n                f.write(body)\n                f.flush()\n                os.fsync(f.fileno())\n            os.replace(tmp, fpath)\n        self._send(204)\n\n    def log_message(self, *args):\n        pass\n\n\ndef main():\n    os.makedirs(DATA_DIR, exist_ok=True)\n    server = ThreadingHTTPServer((\"0.0.0.0\", 8080), Handler)\n    server.serve_forever()\n\n\nif __name__ == \"__main__\":\n    main()\n",
            "file_path": "/opt/builder/app.py"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "chatcmpl-tool-acfdce9c1e1cad56",
          "content": "Successfully wrote to /opt/builder/app.py"
        }
      ]
    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "text": "Now start\n the service. First reset\n the failed sta\nte and start.",
          "details": [
            {
              "format": "unknown",
              "index": 0,
              "text": "Now start",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "\n the ser",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "vice",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": ". First res",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "et",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": "\n the",
              "type": "reasoning.text"
            },
            {
              "format": "unknown",
              "index": 0,
              "text": " failed sta\nte and start.",
              "type": "reasoning.text"
            }
          ]
        },
        {
          "type": "text",
          "text": "Now let me start the service and verify it works.\n\n"
        },
        {
          "type": "tool_use",
          "id": "chatcmpl-tool-8c20d3e0d2327858",
          "name": "Bash",
          "input": {
            "command": "systemctl reset-failed builder-app.service; systemctl start builder-app.service; sleep 2; systemctl is-active builder-app.service; echo \"---HEALTH---\"; curl -s -o /dev/null -w \"%{http_code}\\n\" http://localhost:8080/health; curl -s http://localhost:8080/health; echo",
            "description": "Start service and check health"
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "chatcmpl-tool-8c20d3e0d2327858",
          "content": "active\n---HEALTH---\n200\nready\n"
        }
      ]
    }
  ],
  "tool_trace": [
    {
      "id": "chatcmpl-tool-bbd6fa9228e69a33",
      "name": "Bash",
      "input": {
        "command": "systemctl cat builder-app.service 2>&1; echo \"---STATUS---\"; systemctl status builder-app.service 2>&1 | head -20; echo \"---PYTHON---\"; which python3; python3 --version",
        "description": "Inspect existing service unit and Python"
      },
      "output": "# /etc/systemd/system/builder-app.service -> /nix/store/bkhc7c1djj4z9s51r616fqfbc55zwdvs-unit-builder-app.service/builder-app.service\n[Unit]\nAfter=network.target\nDescription=Agent-built application slot\n\n[Service]\nEnvironment=\"LOCALE_ARCHIVE=/nix/store/54jg0kk0cn5h7j19r0l8x36fmbfywwjj-glibc-locales-2.42-67/lib/locale/locale-archive\"\nEnvironment=\"PATH=/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/bin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/bin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/bin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/bin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/bin:/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/sbin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/sbin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/sbin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/sbin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/sbin\"\nEnvironment=\"TZDIR=/nix/store/2nndxyf3phkb5aggxm3c16sapa0f49kz-tzdata-2026c/share/zoneinfo\"\nExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n---STATUS---\n× builder-app.service - Agent-built application slot\n     Loaded: loaded (/etc/systemd/system/builder-app.service; enabled; preset: ignored)\n     Active: failed (Result: start-limit-hit) since Fri 2026-08-14 15:02:51 UTC; 11s ago\n   Duration: 63ms\n Invocation: 06d1cf0078634ab892bee52596860561\n    Process: 659 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 659 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.1M\n        CPU: 32ms\n\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Start request repeated too quickly.\nAug 14 15:02:51 builder-three systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nAug 14 15:02:51 builder-three systemd[1]: Failed to start Agent-built application slot.\n---PYTHON---\n/run/current-system/sw/bin/python3\nPython 3.14.6\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 14114,
      "duration_ms": 56
    },
    {
      "id": "chatcmpl-tool-b03ca8352c25af30",
      "name": "Bash",
      "input": {
        "command": "ls -la /opt/builder/ 2>&1; echo \"---\"; ls -la /root/ 2>&1 | head -30",
        "description": "List /opt/builder and home"
      },
      "output": "ls: cannot access '/opt/builder/': No such file or directory\n---\ntotal 24\ndrwx------  5 root root 4096 Aug 14 15:02 .\ndrwxr-xr-x 17 root root 4096 Aug 14 15:02 ..\ndrwxr-xr-x  3 root root 4096 Aug 14 15:02 .config\ndrwxr-xr-x  3 root root 4096 Aug 14 15:02 .local\n-rw-r--r--  1 root root   48 Aug 14 15:02 .nix-channels\ndrwx------  2 root root 4096 Aug 14 15:02 .ssh\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 14171,
      "duration_ms": 21
    },
    {
      "id": "chatcmpl-tool-9fde23a1ea182417",
      "name": "Bash",
      "input": {
        "command": "mkdir -p /opt/builder /var/lib/builder/records; echo done",
        "description": "Create app and data directories"
      },
      "output": "done\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 21377,
      "duration_ms": 33
    },
    {
      "id": "chatcmpl-tool-acfdce9c1e1cad56",
      "name": "Write",
      "input": {
        "content": "#!/usr/bin/env python3\n\"\"\"Durable HTTP service for the builder-app deployment slot.\"\"\"\n\nimport os\nimport re\nimport threading\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nfrom urllib.parse import urlparse\n\nDATA_DIR = \"/var/lib/builder/records\"\nLOCK = threading.Lock()\n_ID_RE = re.compile(r\"^/?records/([^/]+)/?$\")\n\n\nclass Handler(BaseHTTPRequestHandler):\n    protocol_version = \"HTTP/1.1\"\n\n    def _send(self, status, body=b\"\", content_type=\"text/plain\"):\n        self.send_response(status)\n        self.send_header(\"Content-Type\", content_type)\n        self.send_header(\"Content-Length\", str(len(body)))\n        self.end_headers()\n        if body:\n            self.wfile.write(body)\n\n    def _parse_id(self):\n        path = urlparse(self.path).path\n        m = _ID_RE.match(path)\n        return m.group(1) if m else None\n\n    def do_GET(self):\n        path = urlparse(self.path).path\n        if path == \"/health\":\n            self._send(200, b\"ready\")\n            return\n        rid = self._parse_id()\n        if rid is None:\n            self._send(404, b\"not found\")\n            return\n        fpath = os.path.join(DATA_DIR, rid)\n        with LOCK:\n            if os.path.isfile(fpath):\n                with open(fpath, \"rb\") as f:\n                    body = f.read()\n                self._send(200, body)\n            else:\n                self._send(404, b\"not found\")\n\n    def do_PUT(self):\n        rid = self._parse_id()\n        if rid is None:\n            self._send(404, b\"not found\")\n            return\n        length = int(self.headers.get(\"Content-Length\", 0))\n        body = self.rfile.read(length) if length else b\"\"\n        fpath = os.path.join(DATA_DIR, rid)\n        tmp = fpath + \".tmp\"\n        with LOCK:\n            os.makedirs(DATA_DIR, exist_ok=True)\n            with open(tmp, \"wb\") as f:\n                f.write(body)\n                f.flush()\n                os.fsync(f.fileno())\n            os.replace(tmp, fpath)\n        self._send(204)\n\n    def log_message(self, *args):\n        pass\n\n\ndef main():\n    os.makedirs(DATA_DIR, exist_ok=True)\n    server = ThreadingHTTPServer((\"0.0.0.0\", 8080), Handler)\n    server.serve_forever()\n\n\nif __name__ == \"__main__\":\n    main()\n",
        "file_path": "/opt/builder/app.py"
      },
      "output": "Successfully wrote to /opt/builder/app.py",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 29105,
      "duration_ms": 0
    },
    {
      "id": "chatcmpl-tool-8c20d3e0d2327858",
      "name": "Bash",
      "input": {
        "command": "systemctl reset-failed builder-app.service; systemctl start builder-app.service; sleep 2; systemctl is-active builder-app.service; echo \"---HEALTH---\"; curl -s -o /dev/null -w \"%{http_code}\\n\" http://localhost:8080/health; curl -s http://localhost:8080/health; echo",
        "description": "Start service and check health"
      },
      "output": "active\n---HEALTH---\n200\nready\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 31758,
      "duration_ms": 2156
    }
  ],
  "timing": {
    "total_duration_ms": 33914,
    "model_rounds": [
      {
        "index": 1,
        "started_after_ms": 0,
        "duration_ms": 14114,
        "status": "completed",
        "usage": {
          "input_tokens": 2898,
          "output_tokens": 342,
          "cache_read_tokens": 0,
          "cache_creation_tokens": 0,
          "cost_usd": 0.0002934
        }
      },
      {
        "index": 2,
        "started_after_ms": 14193,
        "duration_ms": 7184,
        "status": "completed",
        "usage": {
          "input_tokens": 4403,
          "output_tokens": 263,
          "cache_read_tokens": 2816,
          "cache_creation_tokens": 0,
          "cost_usd": 0.000219356
        }
      },
      {
        "index": 3,
        "started_after_ms": 21411,
        "duration_ms": 7694,
        "status": "completed",
        "usage": {
          "input_tokens": 4755,
          "output_tokens": 636,
          "cache_read_tokens": 2816,
          "cache_creation_tokens": 0,
          "cost_usd": 0.000314656
        }
      },
      {
        "index": 4,
        "started_after_ms": 29106,
        "duration_ms": 2651,
        "status": "completed",
        "usage": {
          "input_tokens": 5412,
          "output_tokens": 165,
          "cache_read_tokens": 4608,
          "cache_creation_tokens": 0,
          "cost_usd": 0.000167748
        }
      }
    ]
  }
}