{
  "started_at": "2026-02-22T14:41:51.575351",
  "completed_at": "2026-02-22T14:42:43.878422",
  "runs": [
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-multi-file-01",
      "task_category": "multi_file",
      "task_difficulty": "medium",
      "resolved": true,
      "duration_seconds": 13.2,
      "error": "",
      "output": "Renamed `calculate_total()` to `compute_total()` and updated all references across the project.\n\nChanges made:\n- `src/calc.py`: `def calculate_total(items):` \u2192 `def compute_total(items):`\n- Updated imports and call sites in:\n  - `src/api.py`\n  - `src/views.py`\n  - `tests/test_calc.py`\n\nVerified there are no remaining occurrences of `calculate_total` in the codebase.\n[Tool: Grep] /\\bcalculate_total\\s*\\(/\n[Result] /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/tests/test_calc.py:4:     assert calculate_total([]) == 0\n/private/var/folders/y0/_brl8vt...\n\n[Tool: Edit] tests/test_calc.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/tests/test_calc.py\n--- context ---\nfrom src.calc import calculat...\n\n[Tool: Edit] tests/test_calc.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/tests/test_calc.py\n--- context ---\nfrom src.calc import compute_...\n\n[Tool: Edit] src/api.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/src/api.py\n--- context ---\nfrom src.calc import calculate_total\n...\n\n[Tool: Edit] src/api.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/src/api.py\n--- context ---\nfrom src.calc import compute_total\n\nd...\n\n[Tool: Edit] src/views.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/src/views.py\n--- context ---\nfrom src.calc import calculate_tota...\n\n[Tool: Edit] src/views.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-multi-file-01/"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-recovery-01",
      "task_category": "recovery",
      "task_difficulty": "medium",
      "resolved": true,
      "duration_seconds": 5.2,
      "error": "",
      "output": "Fixed the syntax error in `main.py` by closing the missing parenthesis on the `print` line.\n\nChange:\n```py\nprint(f'Hello, {name}!'\n```\n\nTo:\n```py\nprint(f'Hello, {name}!')\n```\n\nVerified by running:\n```sh\npython main.py\n```\n\nOutput:\n```\nHello, World!\n```\n[Tool: Bash] $ python -m py_compile main.py\n[Error]   File \"main.py\", line 2\n    print(f'Hello, {name}!'\n         ^\nSyntaxError: '(' was never closed\n[Exit code: 1]\n\n[Tool: Read] main.py\n\n[Tool: Edit] main.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-recovery-01/main.py\n--- context ---\ndef greet(name):\n    print(f'Hello, {name}...\n\n[Tool: Bash] $ python main.py\n\nSession: 7b1e6854f6d8 | Turns: 5 | Tools: 4\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-tool-efficiency-01",
      "task_category": "tools",
      "task_difficulty": "easy",
      "resolved": true,
      "duration_seconds": 3.1,
      "error": "",
      "output": "Python files containing `TODO`:\n\n- `src/a.py`\n- `src/c.py`\n- `src/d.py`\n[Tool: Grep] /TODO/\n[Result] /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-tool-efficiency-01/README.md:2: TODO: write docs\n/private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn...\n\n[Tool: Glob] **/*.py\n[Result] /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-tool-efficiency-01/src/d.py\n/private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0n...\n\nSession: d0763feb9356 | Turns: 3 | Tools: 2\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-context-01",
      "task_category": "context",
      "task_difficulty": "hard",
      "resolved": true,
      "duration_seconds": 12.6,
      "error": "",
      "output": "Read `config.py`:\n\n- `DB_HOST = 'localhost'`\n- `DB_PORT = 5432`\n- `DB_NAME = 'myapp'`\n- `DB_USER = 'admin'`\n\nCreated a new module `database.py` implementing a `Database` class that loads these settings from `config.py` and exposes:\n\n- `dsn` property (builds a PostgreSQL-style connection URL)\n- `as_dict()` helper\n- optional `connect()` that uses `psycopg` or `psycopg2` if installed (and errors clearly if not)\n\nFile added: `database.py`.\n[Tool: Read] config.py\n\n[Tool: Write] database.py\n\nSession: 06f6017d0cfa | Turns: 3 | Tools: 2\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-create-01",
      "task_category": "creation",
      "task_difficulty": "easy",
      "resolved": true,
      "duration_seconds": 3.5,
      "error": "",
      "output": "Created `utils.py` with:\n\n```python\ndef is_palindrome(s: str) -> bool:\n    \"\"\"Return True if *s* is a palindrome (case-insensitive).\n\n    Comparison is performed on the string's characters as-is except for\n    lowercasing; whitespace/punctuation are not removed.\n    \"\"\"\n    s_lower = s.lower()\n    return s_lower == s_lower[::-1]\n```\n[Tool: Write] utils.py\n\nSession: aacf5c8ad519 | Turns: 2 | Tools: 1\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-bugfix-01",
      "task_category": "bugfix",
      "task_difficulty": "medium",
      "resolved": true,
      "duration_seconds": 5.6,
      "error": "",
      "output": "Updated `divide(a, b)` in `math_utils.py` to guard against division by zero:\n\n```python\ndef divide(a, b):\n    if b == 0:\n        return None\n    return a / b\n```\n\nVerified tests:\n\n- `pytest -q` \u2192 `1 passed`\n[Tool: Bash] $ ls -R\n\n[Tool: Read] math_utils.py\n\n[Tool: Read] test_math.py\n\n[Tool: Edit] math_utils.py\n[Result] Made 1 replacement(s) in /private/var/folders/y0/_brl8vt509l1ctwzm8pw1_qc0000gn/T/harness-bench-nj0nvtzu/harness/gpt52/hb-bugfix-01/math_utils.py\n--- context ---\ndef divide(a, b):\n    if b == 0:\n     ...\n\n[Tool: Bash] $ pytest -q\n\nSession: d919b1f10781 | Turns: 6 | Tools: 5\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-analyze-01",
      "task_category": "analysis",
      "task_difficulty": "easy",
      "resolved": true,
      "duration_seconds": 1.8,
      "error": "",
      "output": "Imported modules in `app.py`:\n\n- `os`\n- `sys`\n- `pathlib` (`Path`)\n- `collections` (`defaultdict`)\n- `json`\n[Tool: Read] app.py\n\nSession: 117aa399f841 | Turns: 2 | Tools: 1\n"
    },
    {
      "agent": "harness",
      "model_alias": "gpt52",
      "task_id": "hb-refactor-01",
      "task_category": "refactor",
      "task_difficulty": "medium",
      "resolved": true,
      "duration_seconds": 7.2,
      "error": "",
      "output": "Refactored `handlers.py` to extract the duplicated `try/except` into a reusable decorator `handle_errors`.\n\n- Added `handle_errors` decorator (uses `functools.wraps`) that:\n  - runs the wrapped function\n  - catches `Exception`, prints `Error: {e}`, and returns `None` (matching prior behavior)\n- Updated `get_user` and `get_item` to use `@handle_errors` and removed their inline `try/except` blocks.\n[Tool: Glob] **/handlers.py\n\n[Tool: Read] handlers.py\n[Result]      1\tdef get_user(user_id):\n     2\t    try:\n     3\t        return {'id': user_id, 'name': 'Alice'}\n     4\t    except Exception as e:\n     5\t        print(f'Error: {e}')\n     6\t        return None\n  ...\n\n[Tool: Write] handlers.py\n\n[Tool: Bash] $ python -m py_compile handlers.py\n\nSession: 6bb9e2ad89d6 | Turns: 5 | Tools: 4\n"
    }
  ]
}