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              {
                "activeForm": "Inspecting the host and deployment slot",
                "content": "Inspect the host and existing builder service configuration",
                "status": "in_progress"
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              {
                "activeForm": "Implementing durable HTTP service",
                "content": "Implement the application and persistent record storage",
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          "content": "Added:\n  + Inspect the host and existing builder service configuration\n  + Implement the application and persistent record storage\n  + Enable, start, and verify the service and persistence\n\nCurrent tasks:\n  ◉ Inspect the host and existing builder service configuration\n  ○ Implement the application and persistent record storage\n  ○ Enable, start, and verify the service and persistence\n"
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            "command": "pwd && ls -la /opt /opt/builder 2>&1 || true",
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          }
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        {
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          "tool_use_id": "call_O8GADLzwe5l4xopV5Y816YAi",
          "content": "/root\nls: cannot access '/opt': No such file or directory\nls: cannot access '/opt/builder': No such file or directory\n"
        },
        {
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          "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× 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 Thu 2026-08-20 02:39:10 UTC; 5s ago\n   Duration: 177ms\n Invocation: f1ee980ad7d844f0b496bbe3319b83aa\n    Process: 644 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 644 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.1M\n        CPU: 53ms\n\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Start request repeated too quickly.\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nAug 20 02:39:10 builder-three systemd[1]: Failed to start Agent-built application slot.\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_QBCsypubY0RNAJlysh429LIg",
          "content": "lrwxrwxrwx 1 root root 26 Aug 20 02:38 /etc/systemd/system -> /etc/static/systemd/system\nState  Recv-Q Send-Q Local Address:Port  Peer Address:PortProcess\nLISTEN 0      4096   127.0.0.53%lo:53         0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=23))\nLISTEN 0      4096      127.0.0.54:53         0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=25))\nLISTEN 0      128        127.0.0.1:18010      0.0.0.0:*    users:((\"sshd-session\",pid=616,fd=10))\nLISTEN 0      128          0.0.0.0:22         0.0.0.0:*    users:((\"sshd\",pid=561,fd=6))\nLISTEN 0      4096         0.0.0.0:5355       0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=14))\nLISTEN 0      128             [::]:22            [::]:*    users:((\"sshd\",pid=561,fd=7))\nLISTEN 0      4096            [::]:5355          [::]:*    users:((\"systemd-resolve\",pid=297,fd=16))\n"
        },
        {
          "type": "tool_result",
          "tool_use_id": "call_UZLjT9tcVTZFhf8BSm6u2jEe",
          "content": "uid=0(root) gid=0(root) groups=0(root)\n/run/current-system/sw/bin/python3\nPython 3.14.6\n/dev/vda on / type ext4 (rw,relatime,x-initrd.mount)\ntmpfs on /nix/.rw-store type tmpfs (rw,relatime,mode=755,x-initrd.mount)\nnix-store on /nix/.ro-store type 9p (rw,relatime,cache=0xf,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\ntmpfs on /run type tmpfs (rw,nosuid,nodev,size=182284k,nr_inodes=819200,mode=755)\nshared on /tmp/shared type 9p (rw,relatime,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\nxchg on /tmp/xchg type 9p (rw,relatime,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\noverlay on /nix/store type overlay (rw,relatime,lowerdir=/sysroot/nix/.ro-store,upperdir=/sysroot/nix/.rw-store/upper,workdir=/sysroot/nix/.rw-store/work,uuid=on,x-initrd.mount,x-systemd.requires-mounts-for=/sysroot/nix/.ro-store,x-systemd.requires-mounts-for=/sysroot/nix/.rw-store/upper,x-systemd.requires-mounts-for=/sysroot/nix/.rw-store/work)\ndevtmpfs on /dev type devtmpfs (rw,nosuid,size=36460k,nr_inodes=86538,mode=755)\ndevpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=3,mode=620,ptmxmode=666)\ntmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,size=364568k)\nproc on /proc type proc (rw,nosuid,nodev,noexec,relatime)\nramfs on /run/keys type ramfs (rw,nosuid,nodev,relatime,mode=750)\nsysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)\noverlay on /nix/store type overlay (ro,nosuid,nodev,relatime,lowerdir=/sysroot/nix/.ro-store,upperdir=/sysroot/nix/.rw-store/upper,workdir=/sysroot/nix/.rw-store/work,uuid=on)\nsecurityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)\ncgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot,memory_hugetlb_accounting)\nnone on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)\nbpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)\nnone on /run/credentials/systemd-journald.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nmqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)\ndebugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)\ntracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)\nhugetlbfs on /dev/hugepages type hugetlbfs (rw,nosuid,nodev,relatime,pagesize=2M)\nfusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)\nconfigfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)\nnone on /run/credentials/systemd-resolved.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\ntmpfs on /run/wrappers type tmpfs (rw,nodev,relatime,size=364568k,mode=755)\nnone on /run/credentials/systemd-networkd.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nnone on /run/credentials/serial-getty@ttyS0.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nnone on /run/credentials/getty@tty1.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\n"
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    },
    {
      "role": "assistant",
      "content": [
        {
          "type": "reasoning",
          "details": [
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          "name": "TodoWrite",
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            "todos": [
              {
                "activeForm": "Inspecting the host and deployment slot",
                "content": "Inspect the host and existing builder service configuration",
                "status": "completed"
              },
              {
                "activeForm": "Implementing durable HTTP service",
                "content": "Implement the application and persistent record storage",
                "status": "in_progress"
              },
              {
                "activeForm": "Starting and verifying deployment",
                "content": "Enable, start, and verify the service and persistence",
                "status": "pending"
              }
            ]
          }
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    },
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      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_uatbKRBkbwcjVCRXoGiKULLM",
          "content": "Started:\n  > Implementing durable HTTP service\nCompleted:\n  ✓ Inspect the host and existing builder service configuration\n\nCurrent tasks:\n  ✓ Inspect the host and existing builder service configuration\n  ◉ Implement the application and persistent record storage\n  ○ Enable, start, and verify the service and persistence\n"
        }
      ]
    },
    {
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      "content": [
        {
          "type": "tool_use",
          "id": "call_JVrHUMbLKGSWHG2VyXaYtnpF",
          "name": "Write",
          "input": {
            "content": "#!/usr/bin/env python3\nimport os\nimport sqlite3\nimport threading\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nfrom urllib.parse import unquote, urlsplit\n\nHOST = \"0.0.0.0\"\nPORT = 8080\nDB_DIR = \"/var/lib/builder-app\"\nDB_PATH = os.path.join(DB_DIR, \"records.db\")\n\nos.makedirs(DB_DIR, mode=0o755, exist_ok=True)\n\n_db = sqlite3.connect(DB_PATH, check_same_thread=False)\n_db.execute(\"PRAGMA journal_mode=WAL\")\n_db.execute(\"PRAGMA synchronous=FULL\")\n_db.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, body BLOB NOT NULL)\")\n_db.commit()\n_db_lock = threading.Lock()\n\n\nclass Handler(BaseHTTPRequestHandler):\n    protocol_version = \"HTTP/1.1\"\n\n    def _record_id(self):\n        path = urlsplit(self.path).path\n        parts = path.split(\"/\")\n        if len(parts) != 3 or parts[1] != \"records\" or not parts[2]:\n            return None\n        return unquote(parts[2])\n\n    def _send(self, status, body=b\"\"):\n        self.send_response(status)\n        self.send_header(\"Content-Length\", str(len(body)))\n        self.end_headers()\n        if body:\n            self.wfile.write(body)\n\n    def do_GET(self):\n        if urlsplit(self.path).path == \"/health\":\n            self._send(200, b\"ready\")\n            return\n\n        record_id = self._record_id()\n        if record_id is None:\n            self._send(404)\n            return\n        with _db_lock:\n            row = _db.execute(\"SELECT body FROM records WHERE id = ?\", (record_id,)).fetchone()\n        if row is None:\n            self._send(404)\n        else:\n            self._send(200, bytes(row[0]))\n\n    def do_PUT(self):\n        record_id = self._record_id()\n        if record_id is None:\n            self._send(404)\n            return\n        try:\n            length = int(self.headers.get(\"Content-Length\", \"-1\"))\n        except ValueError:\n            length = -1\n        if length < 0:\n            self._send(411)\n            return\n        body = self.rfile.read(length)\n        if len(body) != length:\n            self._send(400)\n            return\n        with _db_lock:\n            _db.execute(\n                \"INSERT INTO records (id, body) VALUES (?, ?) \"\n                \"ON CONFLICT(id) DO UPDATE SET body = excluded.body\",\n                (record_id, body),\n            )\n            _db.commit()\n        self._send(204)\n\n    def log_message(self, format, *args):\n        return\n\n\nif __name__ == \"__main__\":\n    server = ThreadingHTTPServer((HOST, PORT), Handler)\n    try:\n        server.serve_forever()\n    finally:\n        server.server_close()\n        _db.close()\n",
            "file_path": "/opt/builder/app.py"
          }
        }
      ]
    },
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      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_JVrHUMbLKGSWHG2VyXaYtnpF",
          "content": "Successfully wrote to /opt/builder/app.py"
        }
      ]
    },
    {
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        {
          "type": "reasoning",
          "text": "**Inspecting file and changes**\n\nI need to inspect the file to determine if I can propose changes. I think I should read it carefully before making any suggestions. To start, I'll consider using `systemctl daemon-reload`, and I'll check the unit path if that's applicable. Restarting may also be necessary, and verifying the logs afterward sounds like a good idea to ensure everything is functioning as expected. Let’s get started on this!",
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            {
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            {
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            {
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              "index": 0,
              "summary": "’s",
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            {
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              "summary": " get",
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            {
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            {
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            {
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              "id": "rs_0fb787fa21b28f3b016a8668e32eac87d1a50aa83c64eeb2a7",
              "index": 1,
              "type": "reasoning.encrypted"
            }
          ]
        },
        {
          "type": "tool_use",
          "id": "call_Mx5W4iXYFpibZR078BLZbhGW",
          "name": "Bash",
          "input": {
            "command": "chmod 755 /opt/builder/app.py && systemctl daemon-reload && systemctl reset-failed builder-app.service && systemctl enable builder-app.service && systemctl restart builder-app.service && systemctl status builder-app.service --no-pager",
            "description": "Install and start the durable service",
            "timeout": 120000
          }
        }
      ]
    },
    {
      "role": "user",
      "content": [
        {
          "type": "tool_result",
          "tool_use_id": "call_Mx5W4iXYFpibZR078BLZbhGW",
          "content": "● builder-app.service - Agent-built application slot\n     Loaded: loaded (/etc/systemd/system/builder-app.service; enabled; preset: ignored)\n     Active: active (running) since Thu 2026-08-20 02:39:34 UTC; 23ms ago\n Invocation: d30775f8f2264120b74c7582d7be299f\n   Main PID: 945 ((python))\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n      Tasks: 1 (limit: 811)\n     Memory: 1.2M (peak: 1.2M)\n        CPU: 3ms\n     CGroup: /system.slice/builder-app.service\n             └─945 \"(python)\"\n\nAug 20 02:39:34 builder-three systemd[1]: Started Agent-built application slot.\n"
        }
      ]
    }
  ],
  "tool_trace": [
    {
      "id": "call_ydNf7cff9aIT7yzjzFHxCjoS",
      "name": "TodoWrite",
      "input": {
        "todos": [
          {
            "activeForm": "Inspecting the host and deployment slot",
            "content": "Inspect the host and existing builder service configuration",
            "status": "in_progress"
          },
          {
            "activeForm": "Implementing durable HTTP service",
            "content": "Implement the application and persistent record storage",
            "status": "pending"
          },
          {
            "activeForm": "Starting and verifying deployment",
            "content": "Enable, start, and verify the service and persistence",
            "status": "pending"
          }
        ]
      },
      "output": "Added:\n  + Inspect the host and existing builder service configuration\n  + Implement the application and persistent record storage\n  + Enable, start, and verify the service and persistence\n\nCurrent tasks:\n  ◉ Inspect the host and existing builder service configuration\n  ○ Implement the application and persistent record storage\n  ○ Enable, start, and verify the service and persistence\n",
      "is_error": false,
      "read_only": true,
      "started_after_ms": 3044,
      "duration_ms": 0
    },
    {
      "id": "call_O8GADLzwe5l4xopV5Y816YAi",
      "name": "Bash",
      "input": {
        "command": "pwd && ls -la /opt /opt/builder 2>&1 || true",
        "description": "Inspect application directories",
        "timeout": 120000
      },
      "output": "/root\nls: cannot access '/opt': No such file or directory\nls: cannot access '/opt/builder': No such file or directory\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 6237,
      "duration_ms": 25
    },
    {
      "id": "call_OlrUQYoCFGNO4A1ulxuhCcAD",
      "name": "Bash",
      "input": {
        "command": "systemctl cat builder-app.service 2>&1 || true; systemctl status builder-app.service --no-pager 2>&1 || true",
        "description": "Inspect existing systemd unit",
        "timeout": 120000
      },
      "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× 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 Thu 2026-08-20 02:39:10 UTC; 5s ago\n   Duration: 177ms\n Invocation: f1ee980ad7d844f0b496bbe3319b83aa\n    Process: 644 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 644 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.1M\n        CPU: 53ms\n\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Start request repeated too quickly.\nAug 20 02:39:10 builder-three systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nAug 20 02:39:10 builder-three systemd[1]: Failed to start Agent-built application slot.\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 6263,
      "duration_ms": 49
    },
    {
      "id": "call_QBCsypubY0RNAJlysh429LIg",
      "name": "Bash",
      "input": {
        "command": "ls -la /etc/systemd/system /lib/systemd/system 2>/dev/null | head -100; ss -ltnp 2>&1 | head -50",
        "description": "Inspect system services and port usage",
        "timeout": 120000
      },
      "output": "lrwxrwxrwx 1 root root 26 Aug 20 02:38 /etc/systemd/system -> /etc/static/systemd/system\nState  Recv-Q Send-Q Local Address:Port  Peer Address:PortProcess\nLISTEN 0      4096   127.0.0.53%lo:53         0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=23))\nLISTEN 0      4096      127.0.0.54:53         0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=25))\nLISTEN 0      128        127.0.0.1:18010      0.0.0.0:*    users:((\"sshd-session\",pid=616,fd=10))\nLISTEN 0      128          0.0.0.0:22         0.0.0.0:*    users:((\"sshd\",pid=561,fd=6))\nLISTEN 0      4096         0.0.0.0:5355       0.0.0.0:*    users:((\"systemd-resolve\",pid=297,fd=14))\nLISTEN 0      128             [::]:22            [::]:*    users:((\"sshd\",pid=561,fd=7))\nLISTEN 0      4096            [::]:5355          [::]:*    users:((\"systemd-resolve\",pid=297,fd=16))\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 6313,
      "duration_ms": 74
    },
    {
      "id": "call_UZLjT9tcVTZFhf8BSm6u2jEe",
      "name": "Bash",
      "input": {
        "command": "id; command -v python3; python3 --version; mount | head -30",
        "description": "Inspect runtime and filesystems",
        "timeout": 120000
      },
      "output": "uid=0(root) gid=0(root) groups=0(root)\n/run/current-system/sw/bin/python3\nPython 3.14.6\n/dev/vda on / type ext4 (rw,relatime,x-initrd.mount)\ntmpfs on /nix/.rw-store type tmpfs (rw,relatime,mode=755,x-initrd.mount)\nnix-store on /nix/.ro-store type 9p (rw,relatime,cache=0xf,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\ntmpfs on /run type tmpfs (rw,nosuid,nodev,size=182284k,nr_inodes=819200,mode=755)\nshared on /tmp/shared type 9p (rw,relatime,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\nxchg on /tmp/xchg type 9p (rw,relatime,access=client,msize=16384,trans=virtio,x-initrd.mount,x-systemd.requires=modprobe@9pnet_virtio.service)\noverlay on /nix/store type overlay (rw,relatime,lowerdir=/sysroot/nix/.ro-store,upperdir=/sysroot/nix/.rw-store/upper,workdir=/sysroot/nix/.rw-store/work,uuid=on,x-initrd.mount,x-systemd.requires-mounts-for=/sysroot/nix/.ro-store,x-systemd.requires-mounts-for=/sysroot/nix/.rw-store/upper,x-systemd.requires-mounts-for=/sysroot/nix/.rw-store/work)\ndevtmpfs on /dev type devtmpfs (rw,nosuid,size=36460k,nr_inodes=86538,mode=755)\ndevpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=3,mode=620,ptmxmode=666)\ntmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,size=364568k)\nproc on /proc type proc (rw,nosuid,nodev,noexec,relatime)\nramfs on /run/keys type ramfs (rw,nosuid,nodev,relatime,mode=750)\nsysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)\noverlay on /nix/store type overlay (ro,nosuid,nodev,relatime,lowerdir=/sysroot/nix/.ro-store,upperdir=/sysroot/nix/.rw-store/upper,workdir=/sysroot/nix/.rw-store/work,uuid=on)\nsecurityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)\ncgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot,memory_hugetlb_accounting)\nnone on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)\nbpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)\nnone on /run/credentials/systemd-journald.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nmqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)\ndebugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)\ntracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)\nhugetlbfs on /dev/hugepages type hugetlbfs (rw,nosuid,nodev,relatime,pagesize=2M)\nfusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)\nconfigfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)\nnone on /run/credentials/systemd-resolved.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\ntmpfs on /run/wrappers type tmpfs (rw,nodev,relatime,size=364568k,mode=755)\nnone on /run/credentials/systemd-networkd.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nnone on /run/credentials/serial-getty@ttyS0.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\nnone on /run/credentials/getty@tty1.service type tmpfs (ro,nosuid,nodev,noexec,relatime,nosymfollow,size=1024k,nr_inodes=1024,mode=700,noswap)\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 6387,
      "duration_ms": 34
    },
    {
      "id": "call_uatbKRBkbwcjVCRXoGiKULLM",
      "name": "TodoWrite",
      "input": {
        "todos": [
          {
            "activeForm": "Inspecting the host and deployment slot",
            "content": "Inspect the host and existing builder service configuration",
            "status": "completed"
          },
          {
            "activeForm": "Implementing durable HTTP service",
            "content": "Implement the application and persistent record storage",
            "status": "in_progress"
          },
          {
            "activeForm": "Starting and verifying deployment",
            "content": "Enable, start, and verify the service and persistence",
            "status": "pending"
          }
        ]
      },
      "output": "Started:\n  > Implementing durable HTTP service\nCompleted:\n  ✓ Inspect the host and existing builder service configuration\n\nCurrent tasks:\n  ✓ Inspect the host and existing builder service configuration\n  ◉ Implement the application and persistent record storage\n  ○ Enable, start, and verify the service and persistence\n",
      "is_error": false,
      "read_only": true,
      "started_after_ms": 12879,
      "duration_ms": 0
    },
    {
      "id": "call_JVrHUMbLKGSWHG2VyXaYtnpF",
      "name": "Write",
      "input": {
        "content": "#!/usr/bin/env python3\nimport os\nimport sqlite3\nimport threading\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nfrom urllib.parse import unquote, urlsplit\n\nHOST = \"0.0.0.0\"\nPORT = 8080\nDB_DIR = \"/var/lib/builder-app\"\nDB_PATH = os.path.join(DB_DIR, \"records.db\")\n\nos.makedirs(DB_DIR, mode=0o755, exist_ok=True)\n\n_db = sqlite3.connect(DB_PATH, check_same_thread=False)\n_db.execute(\"PRAGMA journal_mode=WAL\")\n_db.execute(\"PRAGMA synchronous=FULL\")\n_db.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, body BLOB NOT NULL)\")\n_db.commit()\n_db_lock = threading.Lock()\n\n\nclass Handler(BaseHTTPRequestHandler):\n    protocol_version = \"HTTP/1.1\"\n\n    def _record_id(self):\n        path = urlsplit(self.path).path\n        parts = path.split(\"/\")\n        if len(parts) != 3 or parts[1] != \"records\" or not parts[2]:\n            return None\n        return unquote(parts[2])\n\n    def _send(self, status, body=b\"\"):\n        self.send_response(status)\n        self.send_header(\"Content-Length\", str(len(body)))\n        self.end_headers()\n        if body:\n            self.wfile.write(body)\n\n    def do_GET(self):\n        if urlsplit(self.path).path == \"/health\":\n            self._send(200, b\"ready\")\n            return\n\n        record_id = self._record_id()\n        if record_id is None:\n            self._send(404)\n            return\n        with _db_lock:\n            row = _db.execute(\"SELECT body FROM records WHERE id = ?\", (record_id,)).fetchone()\n        if row is None:\n            self._send(404)\n        else:\n            self._send(200, bytes(row[0]))\n\n    def do_PUT(self):\n        record_id = self._record_id()\n        if record_id is None:\n            self._send(404)\n            return\n        try:\n            length = int(self.headers.get(\"Content-Length\", \"-1\"))\n        except ValueError:\n            length = -1\n        if length < 0:\n            self._send(411)\n            return\n        body = self.rfile.read(length)\n        if len(body) != length:\n            self._send(400)\n            return\n        with _db_lock:\n            _db.execute(\n                \"INSERT INTO records (id, body) VALUES (?, ?) \"\n                \"ON CONFLICT(id) DO UPDATE SET body = excluded.body\",\n                (record_id, body),\n            )\n            _db.commit()\n        self._send(204)\n\n    def log_message(self, format, *args):\n        return\n\n\nif __name__ == \"__main__\":\n    server = ThreadingHTTPServer((HOST, PORT), Handler)\n    try:\n        server.serve_forever()\n    finally:\n        server.server_close()\n        _db.close()\n",
        "file_path": "/opt/builder/app.py"
      },
      "output": "Successfully wrote to /opt/builder/app.py",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 18688,
      "duration_ms": 0
    },
    {
      "id": "call_Mx5W4iXYFpibZR078BLZbhGW",
      "name": "Bash",
      "input": {
        "command": "chmod 755 /opt/builder/app.py && systemctl daemon-reload && systemctl reset-failed builder-app.service && systemctl enable builder-app.service && systemctl restart builder-app.service && systemctl status builder-app.service --no-pager",
        "description": "Install and start the durable service",
        "timeout": 120000
      },
      "output": "● builder-app.service - Agent-built application slot\n     Loaded: loaded (/etc/systemd/system/builder-app.service; enabled; preset: ignored)\n     Active: active (running) since Thu 2026-08-20 02:39:34 UTC; 23ms ago\n Invocation: d30775f8f2264120b74c7582d7be299f\n   Main PID: 945 ((python))\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n      Tasks: 1 (limit: 811)\n     Memory: 1.2M (peak: 1.2M)\n        CPU: 3ms\n     CGroup: /system.slice/builder-app.service\n             └─945 \"(python)\"\n\nAug 20 02:39:34 builder-three systemd[1]: Started Agent-built application slot.\n",
      "is_error": false,
      "read_only": false,
      "started_after_ms": 22457,
      "duration_ms": 1194
    }
  ],
  "timing": {
    "total_duration_ms": 26513,
    "model_rounds": [
      {
        "index": 1,
        "started_after_ms": 0,
        "duration_ms": 3043,
        "status": "completed",
        "usage": {
          "input_tokens": 2144,
          "output_tokens": 125,
          "cache_read_tokens": 2141,
          "cache_creation_tokens": 0,
          "cost_usd": 0.00019342
        }
      },
      {
        "index": 2,
        "started_after_ms": 3045,
        "duration_ms": 3192,
        "status": "completed",
        "usage": {
          "input_tokens": 2355,
          "output_tokens": 223,
          "cache_read_tokens": 2141,
          "cache_creation_tokens": 211,
          "cost_usd": 0.00036377
        }
      },
      {
        "index": 3,
        "started_after_ms": 6422,
        "duration_ms": 6455,
        "status": "completed",
        "usage": {
          "input_tokens": 5050,
          "output_tokens": 493,
          "cache_read_tokens": 2352,
          "cache_creation_tokens": 2695,
          "cost_usd": 0.00131299
        }
      },
      {
        "index": 4,
        "started_after_ms": 12880,
        "duration_ms": 5808,
        "status": "completed",
        "usage": {
          "input_tokens": 5616,
          "output_tokens": 751,
          "cache_read_tokens": 5047,
          "cache_creation_tokens": 566,
          "cost_usd": 0.00114424
        }
      },
      {
        "index": 5,
        "started_after_ms": 18689,
        "duration_ms": 3766,
        "status": "completed",
        "usage": {
          "input_tokens": 6386,
          "output_tokens": 119,
          "cache_read_tokens": 5613,
          "cache_creation_tokens": 770,
          "cost_usd": 0.00044816
        }
      },
      {
        "index": 6,
        "started_after_ms": 23651,
        "duration_ms": 2861,
        "status": "error"
      }
    ]
  }
}