{
  "baseline": {
    "age_matched": {
      "buckets_used": 3,
      "gap": 0.12418238708824281,
      "tagged_lines_covered": 0.9999684930212042,
      "tagged_rate": 0.934936038817821,
      "untagged_rate": 0.8107536517295781
    },
    "by_age": [
      {
        "from_days": 0,
        "tagged": {
          "cap_lines": 342,
          "capped_survival_rate": 0.9356846473029046,
          "commits": 7,
          "introduced": 482,
          "largest_commit_share": 0.7095435684647303,
          "median_survival": 0.9668348954578225,
          "survival_rate": 0.9356846473029046,
          "surviving": 451
        },
        "to_days": 30,
        "untagged": {
          "cap_lines": 1606,
          "capped_survival_rate": 0.8598795952161663,
          "commits": 101,
          "introduced": 34728,
          "largest_commit_share": 0.15195231513476157,
          "median_survival": 0.9209778283115406,
          "survival_rate": 0.8805286800276434,
          "surviving": 30579
        }
      },
      {
        "from_days": 30,
        "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": 90,
        "untagged": {
          "cap_lines": 581,
          "capped_survival_rate": 0.5707289097275621,
          "commits": 97,
          "introduced": 26820,
          "largest_commit_share": 0.3505219985085757,
          "median_survival": 0.475177304964539,
          "survival_rate": 0.7629753914988814,
          "surviving": 20463
        }
      },
      {
        "from_days": 90,
        "tagged": {
          "cap_lines": 1,
          "capped_survival_rate": 0.0,
          "commits": 1,
          "introduced": 1,
          "largest_commit_share": 1.0,
          "median_survival": 0.0,
          "survival_rate": 0.0,
          "surviving": 0
        },
        "to_days": 180,
        "untagged": {
          "cap_lines": 88,
          "capped_survival_rate": 0.5971536445757527,
          "commits": 105,
          "introduced": 12441,
          "largest_commit_share": 0.5438469576400611,
          "median_survival": 0.47368421052631576,
          "survival_rate": 0.8260589984727916,
          "surviving": 10277
        }
      },
      {
        "from_days": 180,
        "tagged": {
          "cap_lines": 2540,
          "capped_survival_rate": 0.9372489217316192,
          "commits": 26,
          "introduced": 27247,
          "largest_commit_share": 0.8063640033765185,
          "median_survival": 0.7776679841897234,
          "survival_rate": 0.9818695636216831,
          "surviving": 26753
        },
        "to_days": 365,
        "untagged": {
          "cap_lines": 95,
          "capped_survival_rate": 0.8164668645288067,
          "commits": 233,
          "introduced": 4647,
          "largest_commit_share": 0.0692920163546374,
          "median_survival": 1.0,
          "survival_rate": 0.8093393587260598,
          "surviving": 3761
        }
      },
      {
        "from_days": 365,
        "tagged": {
          "cap_lines": 246,
          "capped_survival_rate": 0.30604239288626994,
          "commits": 44,
          "introduced": 4009,
          "largest_commit_share": 0.4033424794213021,
          "median_survival": 0.0,
          "survival_rate": 0.6158643053130457,
          "surviving": 2469
        },
        "to_days": 730,
        "untagged": {
          "cap_lines": 84,
          "capped_survival_rate": 0.7650974795477123,
          "commits": 162,
          "introduced": 3106,
          "largest_commit_share": 0.20766258853831293,
          "median_survival": 1.0,
          "survival_rate": 0.8119768190598841,
          "surviving": 2522
        }
      },
      {
        "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": 596,
      "commits_before": 0,
      "date": "2025-02-22",
      "introduced_before": 0,
      "tagged_commits_before": 0,
      "tagged_introduced_before": 0
    },
    "untagged": {
      "cap_lines": 302,
      "capped_survival_rate": 0.7385732740775822,
      "commits": 698,
      "introduced": 81742,
      "largest_commit_share": 0.11500819652076044,
      "median_survival": 0.9444444444444444,
      "survival_rate": 0.8270167111154608,
      "surviving": 67602
    }
  },
  "by_agent": {
    "claude-code": {
      "cap_lines": 942,
      "capped_survival_rate": 0.7561758472757145,
      "commits": 78,
      "introduced": 31739,
      "largest_commit_share": 0.6922398311225937,
      "median_survival": 0.5807142857142857,
      "survival_rate": 0.9349065818078705,
      "surviving": 29673
    }
  },
  "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": "3deb873687379f0c199a69fdaccc65f0865f7a29",
    "origin": "https://github.com/anthropics/claude-code"
  },
  "total_commits": 776,
  "verified": {
    "cap_lines": 942,
    "capped_survival_rate": 0.7561758472757145,
    "commits": 78,
    "introduced": 31739,
    "largest_commit_share": 0.6922398311225937,
    "median_survival": 0.5807142857142857,
    "survival_rate": 0.9349065818078705,
    "surviving": 29673
  }
}
