{
  "baseline": {
    "age_matched": {
      "buckets_used": 2,
      "gap": -0.03988214614085442,
      "tagged_lines_covered": 0.5683749285578206,
      "tagged_rate": 0.1299859221022994,
      "untagged_rate": 0.1698680682431538
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 174,
          "capped_survival_rate": 0.9565217391304348,
          "commits": 3,
          "introduced": 230,
          "largest_commit_share": 0.7565217391304347,
          "median_survival": 0.9712643678160919,
          "survival_rate": 0.9565217391304348,
          "surviving": 220
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 829,
          "capped_survival_rate": 0.7128024745879359,
          "commits": 1245,
          "introduced": 365003,
          "largest_commit_share": 0.16069182993016495,
          "median_survival": 0.8146165338645419,
          "survival_rate": 0.7567061092648554,
          "surviving": 276200
        }
      },
      {
        "from_days": 30,
        "tagged": {
          "cap_lines": 23,
          "capped_survival_rate": 0.1,
          "commits": 5,
          "introduced": 90,
          "largest_commit_share": 0.25555555555555554,
          "median_survival": 0.0,
          "survival_rate": 0.1,
          "surviving": 9
        },
        "to_days": 90,
        "untagged": {
          "cap_lines": 921,
          "capped_survival_rate": 0.5360377481303736,
          "commits": 3511,
          "introduced": 1118540,
          "largest_commit_share": 0.101256101704007,
          "median_survival": 0.5402298850574713,
          "survival_rate": 0.3930731131653763,
          "surviving": 439668
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 10000,
          "capped_survival_rate": 0.15774190320766626,
          "commits": 3,
          "introduced": 11094,
          "largest_commit_share": 0.9993690283035875,
          "median_survival": 0.15775232253991162,
          "survival_rate": 0.1577429241031188,
          "surviving": 1750
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 1101,
          "capped_survival_rate": 0.22713871708568908,
          "commits": 4090,
          "introduced": 1639180,
          "largest_commit_share": 0.07457326224087654,
          "median_survival": 0.0,
          "survival_rate": 0.1744091557974109,
          "surviving": 285888
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 2381,
          "capped_survival_rate": 0.20926452707495152,
          "commits": 42,
          "introduced": 14827,
          "largest_commit_share": 0.42179807108653133,
          "median_survival": 0.0,
          "survival_rate": 0.13016793687192285,
          "surviving": 1930
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 530,
          "capped_survival_rate": 0.10955993943104297,
          "commits": 8353,
          "introduced": 1640180,
          "largest_commit_share": 0.11744076869611872,
          "median_survival": 0.0,
          "survival_rate": 0.16851321196454047,
          "surviving": 276392
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 4,
          "capped_survival_rate": 0.0,
          "commits": 1,
          "introduced": 4,
          "largest_commit_share": 1.0,
          "median_survival": 0.0,
          "survival_rate": 0.0,
          "surviving": 0
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 498,
          "capped_survival_rate": 0.08663879636866172,
          "commits": 3236,
          "introduced": 417189,
          "largest_commit_share": 0.053234864773519915,
          "median_survival": 0.0,
          "survival_rate": 0.09958795653768436,
          "surviving": 41547
        }
      },
      {
        "from_days": 730,
        "tagged": {
          "cap_lines": null,
          "capped_survival_rate": null,
          "commits": 0,
          "introduced": 0,
          "largest_commit_share": null,
          "median_survival": null,
          "survival_rate": null,
          "surviving": 0
        },
        "to_days": null,
        "untagged": {
          "cap_lines": null,
          "capped_survival_rate": null,
          "commits": 0,
          "introduced": 0,
          "largest_commit_share": null,
          "median_survival": null,
          "survival_rate": null,
          "surviving": 0
        }
      }
    ],
    "oldest_surviving": {
      "age_days": 545,
      "commits_before": 65,
      "date": "2025-04-21",
      "introduced_before": 43988,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 725,
      "capped_survival_rate": 0.279351805031373,
      "commits": 20435,
      "introduced": 5180092,
      "largest_commit_share": 0.03718543994971518,
      "median_survival": 0.0,
      "survival_rate": 0.2547628497717801,
      "surviving": 1319695
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 2381,
      "capped_survival_rate": 0.3132588832102558,
      "commits": 38,
      "introduced": 8630,
      "largest_commit_share": 0.48192352259559673,
      "median_survival": 0.0,
      "survival_rate": 0.24971031286210893,
      "surviving": 2155
    },
    "cursor": {
      "cap_lines": 117,
      "capped_survival_rate": 0.0,
      "commits": 3,
      "introduced": 222,
      "largest_commit_share": 0.527027027027027,
      "median_survival": 0.0,
      "survival_rate": 0.0,
      "surviving": 0
    },
    "github-copilot": {
      "cap_lines": 10000,
      "capped_survival_rate": 0.09707540334922808,
      "commits": 12,
      "introduced": 17389,
      "largest_commit_share": 0.6375869802748865,
      "median_survival": 0.0,
      "survival_rate": 0.10086836505837024,
      "surviving": 1754
    },
    "jules": {
      "cap_lines": 4,
      "capped_survival_rate": 0.0,
      "commits": 1,
      "introduced": 4,
      "largest_commit_share": 1.0,
      "median_survival": 0.0,
      "survival_rate": 0.0,
      "surviving": 0
    }
  },
  "coverage": {
    "blame_flags": [
      "-w",
      "-M",
      "-C"
    ],
    "ignore_revs_file": false,
    "method": "v4",
    "sample_floor": 5,
    "shallow": false,
    "small_sample": false
  },
  "method": "v4",
  "probable": {
    "cap_lines": null,
    "capped_survival_rate": null,
    "commits": 0,
    "introduced": 0,
    "largest_commit_share": null,
    "median_survival": null,
    "survival_rate": null,
    "surviving": 0
  },
  "repository": {
    "head": "ba06ff9e0bf2dcefbbbc3a1d6094f3572d77c84e",
    "origin": "https://github.com/sst/opencode"
  },
  "total_commits": 20489,
  "verified": {
    "cap_lines": 4159,
    "capped_survival_rate": 0.16347822193851308,
    "commits": 54,
    "introduced": 26245,
    "largest_commit_share": 0.4224423699752334,
    "median_survival": 0.0,
    "survival_rate": 0.14894265574395124,
    "surviving": 3909
  }
}