{"schema_version": 2, "harness": "opencode", "tool_trace": [{"id": "chatcmpl-tool-92dbcd990e112c72", "name": "bash", "input": {"command": "cat /etc/systemd/system/builder-app.service 2>/dev/null; systemctl status builder-app.service --no-pager 2>&1 | head -20; ls -la /opt/builder 2>/dev/null; which python3; python3 --version"}, "output": "[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 Sun 2026-09-13 02:22:04 UTC; 13s ago\n   Duration: 296ms\n Invocation: e17e4fe9ddd5427786084b39ac979f2b\n    Process: 629 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 629 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.1M\n        CPU: 148ms\n\nSep 13 02:22:04 builder-three systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nSep 13 02:22:04 builder-three systemd[1]: builder-app.service: Start request repeated too quickly.\nSep 13 02:22:04 builder-three systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nSep 13 02:22:04 builder-three systemd[1]: Failed to start Agent-built application slot.\n/run/current-system/sw/bin/python3\nPython 3.14.6\n", "is_error": false, "read_only": false, "started_after_ms": 0, "duration_ms": 191}, {"id": "chatcmpl-tool-9c02598e5ac804aa", "name": "bash", "input": {"command": "mkdir -p /opt/builder /var/lib/builder-app/records"}, "output": "(no output)", "is_error": false, "read_only": false, "started_after_ms": 6183, "duration_ms": 40}, {"id": "chatcmpl-tool-8f2cb5a2525131d3", "name": "write", "input": {"content": "#!/usr/bin/env python3\nimport os\nimport tempfile\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nPORT = 8080\nRECORDS_DIR = \"/var/lib/builder-app/records\"\n\n\ndef record_path(record_id):\n    if not record_id or \"/\" in record_id or \"\\\\\" in record_id or record_id in (\".\", \"..\"):\n        return None\n    return os.path.join(RECORDS_DIR, record_id)\n\n\nclass Handler(BaseHTTPRequestHandler):\n    protocol_version = \"HTTP/1.1\"\n    server_version = \"BuilderApp/1.0\"\n\n    def _read_body(self):\n        length = int(self.headers.get(\"Content-Length\") or 0)\n        return self.rfile.read(length) if length > 0 else b\"\"\n\n    def _send(self, status, body=b\"\", content_type=\"application/octet-stream\"):\n        self.send_response(status)\n        if status != 204:\n            self.send_header(\"Content-Type\", content_type)\n            self.send_header(\"Content-Length\", str(len(body)))\n        else:\n            self.send_header(\"Content-Length\", \"0\")\n        self.end_headers()\n        if status != 204 and body:\n            self.wfile.write(body)\n\n    def do_GET(self):\n        if self.path == \"/health\":\n            self._send(200, b\"ready\", \"text/plain\")\n            return\n        if self.path.startswith(\"/records/\"):\n            path = record_path(self.path[len(\"/records/\"):])\n            if path is None:\n                self._send(400)\n                return\n            try:\n                with open(path, \"rb\") as f:\n                    self._send(200, f.read())\n            except FileNotFoundError:\n                self._send(404, b\"not found\", \"text/plain\")\n            return\n        self._send(404, b\"not found\", \"text/plain\")\n\n    def do_PUT(self):\n        if not self.path.startswith(\"/records/\"):\n            self._send(404, b\"not found\", \"text/plain\")\n            return\n        path = record_path(self.path[len(\"/records/\"):])\n        if path is None:\n            self._send(400)\n            return\n        body = self._read_body()\n        os.makedirs(RECORDS_DIR, exist_ok=True)\n        fd, tmp = tempfile.mkstemp(dir=RECORDS_DIR, prefix=\".tmp-\")\n        try:\n            with os.fdopen(fd, \"wb\") as f:\n                f.write(body)\n                f.flush()\n                os.fsync(f.fileno())\n            os.replace(tmp, path)\n            dir_fd = os.open(RECORDS_DIR, os.O_RDONLY)\n            try:\n                os.fsync(dir_fd)\n            finally:\n                os.close(dir_fd)\n        except BaseException:\n            try:\n                os.unlink(tmp)\n            except OSError:\n                pass\n            raise\n        self._send(204)\n\n    def do_HEAD(self):\n        if self.path == \"/health\":\n            self._send(200, b\"ready\", \"text/plain\")\n        else:\n            self._send(404, b\"not found\", \"text/plain\")\n\n    def log_message(self, fmt, *args):\n        pass\n\n\nif __name__ == \"__main__\":\n    os.makedirs(RECORDS_DIR, exist_ok=True)\n    server = ThreadingHTTPServer((\"0.0.0.0\", PORT), Handler)\n    server.serve_forever()\n", "filePath": "/opt/builder/app.py"}, "output": "Wrote file successfully.", "is_error": false, "read_only": false, "started_after_ms": 13728, "duration_ms": 12}, {"id": "chatcmpl-tool-830957b7732dfad4", "name": "bash", "input": {"command": "systemctl reset-failed builder-app.service && systemctl restart builder-app.service && sleep 1 && systemctl status builder-app.service --no-pager"}, "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 Sun 2026-09-13 02:22:33 UTC; 1s ago\n Invocation: c790487b16d74e589560150869d15326\n   Main PID: 791 (python)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n      Tasks: 1 (limit: 2322)\n     Memory: 14.4M (peak: 14.6M)\n        CPU: 86ms\n     CGroup: /system.slice/builder-app.service\n             └─791 /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py\n\nSep 13 02:22:33 builder-three systemd[1]: Started Agent-built application slot.\n", "is_error": false, "read_only": false, "started_after_ms": 15389, "duration_ms": 1070}, {"id": "chatcmpl-tool-9a7bd0598f88107b", "name": "bash", "input": {"command": "echo \"--- health ---\"; curl -s -o /dev/null -w \"%{http_code}\\n\" http://127.0.0.1:8080/health; curl -s http://127.0.0.1:8080/health; echo; echo \"--- PUT ---\"; curl -s -o /dev/null -w \"%{http_code}\\n\" -X PUT -d 'hello world' http://127.0.0.1:8080/records/a1; curl -s -o /dev/null -w \"%{http_code}\\n\" -X PUT --data-binary $'line1\\nline2' http://127.0.0.1:8080/records/a2; echo \"--- GET ---\"; curl -s -w \"|%{http_code}\\n\" http://127.0.0.1:8080/records/a1; curl -s -w \"|%{http_code}\\n\" http://127.0.0.1:8080/records/a2; echo \"--- missing ---\"; curl -s -o /dev/null -w \"%{http_code}\\n\" http://127.0.0.1:8080/records/nope; echo \"--- binary roundtrip ---\"; printf '\\x00\\x01\\xffbinary' | curl -s -o /dev/null -w \"%{http_code}\\n\" -X PUT --data-binary @- http://127.0.0.1:8080/records/bin1; curl -s http://127.0.0.1:8080/records/bin1 | od -An -tx1 | tr -d ' \\n'; echo"}, "output": "--- health ---\n200\nready\n--- PUT ---\n204\n204\n--- GET ---\nhello world|200\nline1\nline2|200\n--- missing ---\n404\n--- binary roundtrip ---\n204\n0001ff62696e617279\n", "is_error": false, "read_only": false, "started_after_ms": 22471, "duration_ms": 419}, {"id": "chatcmpl-tool-bb83d3c253b7cee4", "name": "bash", "input": {"command": "systemctl restart builder-app.service && sleep 1 && systemctl is-active builder-app.service && echo \"--- records after restart ---\" && curl -s -w \"|%{http_code}\\n\" http://127.0.0.1:8080/records/a1 && curl -s -w \"|%{http_code}\\n\" http://127.0.0.1:8080/health && curl -s http://127.0.0.1:8080/records/bin1 | od -An -tx1 | tr -d ' \\n'; echo; echo \"--- enabled state ---\"; systemctl is-enabled builder-app.service; ls -l /etc/systemd/system/multi-user.target.wants/builder-app.service 2>/dev/null"}, "output": "active\n--- records after restart ---\nhello world|200\nready|200\n0001ff62696e617279\n--- enabled state ---\nenabled\nlrwxrwxrwx 1 root root 22 Jan  1  1970 /etc/systemd/system/multi-user.target.wants/builder-app.service -> ../builder-app.service\n", "is_error": false, "read_only": false, "started_after_ms": 25827, "duration_ms": 1171}, {"id": "chatcmpl-tool-89a140a645286ad9", "name": "bash", "input": {"command": "df -h /var/lib/builder-app /opt/builder | awk '{print $1, $6}'; mount | grep -E ' /var| / ' | head -5; ls -la /var/lib/builder-app/records/"}, "output": "Filesystem Mounted\n/dev/vda /\n/dev/vda /\n/dev/vda on / type ext4 (rw,relatime,x-initrd.mount)\ntotal 20\ndrwxr-xr-x 2 root root 4096 Sep 13 02:22 .\ndrwxr-xr-x 3 root root 4096 Sep 13 02:22 ..\n-rw------- 1 root root   11 Sep 13 02:22 a1\n-rw------- 1 root root   11 Sep 13 02:22 a2\n-rw------- 1 root root    9 Sep 13 02:22 bin1\n", "is_error": false, "read_only": false, "started_after_ms": 31099, "duration_ms": 77}], "messages": [{"role": "assistant", "content": [{"type": "text", "text": "The unit exists and is enabled, but failed because `/opt/builder/app.py` is missing. I'll write a durable stdlib-only Python service there."}]}, {"role": "assistant", "content": [{"type": "text", "text": "Now reset the failed state and start the unit:"}]}, {"role": "assistant", "content": [{"type": "text", "text": "Running. Now verify the full contract:"}]}, {"role": "assistant", "content": [{"type": "text", "text": "All endpoints pass. Now verify durability across a service restart and confirm the unit is enabled for boot:"}]}, {"role": "assistant", "content": [{"type": "text", "text": "Verifying the storage is on persistent (non-tmpfs) storage, then a final end-to-end check:"}]}, {"role": "assistant", "content": [{"type": "text", "text": "Done. The service is deployed, verified, and left running:\n\n- **App**: `/opt/builder/app.py` — stdlib-only threaded HTTP server on :8080 (binary-safe, atomic fsync'd writes to `/var/lib/builder-app/records`)\n- **Contract verified**: `GET /health` → 200 `ready`; `PUT /records/<id>` → 204; `GET /records/<id>` → 200 exact body (text, binary, and multi-line round-trips all pass; unknown id → 404)\n- **Durability**: records survived a `systemctl restart` and live on persistent ext4, so they survive reboot; unit is `enabled` (symlinked in `multi-user.target.wants`) with `Restart=always`, so it returns without agent help\n- **Status**: `builder-app.service` is `active (running)`, previously cleared `start-limit-hit` state"}]}], "usage": {"input_tokens": 16936, "output_tokens": 2135, "cost_usd": null, "estimated_cost_usd": 0.05164106}, "outcome": {"status": "completed", "message": "The unit exists and is enabled, but failed because `/opt/builder/app.py` is missing. I'll write a durable stdlib-only Python service there.\nNow reset the failed state and start the unit:\nRunning. Now verify the full contract:\nAll endpoints pass. Now verify durability across a service restart and confirm the unit is enabled for boot:\nVerifying the storage is on persistent (non-tmpfs) storage, then a final end-to-end check:\nDone. The service is deployed, verified, and left running:\n\n- **App**: `/opt/builder/app.py` — stdlib-only threaded HTTP server on :8080 (binary-safe, atomic fsync'd writes to `/var/lib/builder-app/records`)\n- **Contract verified**: `GET /health` → 200 `ready`; `PUT /records/<id>` → 204; `GET /records/<id>` → 200 exact body (text, binary, and multi-line round-trips all pass; unknown id → 404)\n- **Durability**: records survived a `systemctl restart` and live on persistent ext4, so they survive reboot; unit is `enabled` (symlinked in `multi-user.target.wants`) with `Restart=always`, so it returns without agent help\n- **Status**: `builder-app.service` is `active (running)`, previously cleared `start-limit-hit` state"}, "model": "opencode-go/glm-5.3"}