{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Trace",
  "description": "Persisted user-action trace exported by `tool.record_stop` / `await`.",
  "type": "object",
  "required": [
    "entry",
    "pages",
    "recorded_at",
    "steps"
  ],
  "properties": {
    "entry": {
      "$ref": "#/definitions/TraceEntry"
    },
    "pages": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/PageRef"
      }
    },
    "purpose": {
      "description": "Optional user-provided goal from `--purpose` (metadata only).",
      "type": [
        "string",
        "null"
      ]
    },
    "recorded_at": {
      "description": "RFC 3339 timestamp when recording stopped.",
      "type": "string"
    },
    "started_at": {
      "type": [
        "string",
        "null"
      ]
    },
    "steps": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/Step"
      }
    }
  },
  "definitions": {
    "KeyModifier": {
      "description": "Keyboard modifier flags. Multiple flags may be combined; the extension folds them into CDP's bitfield (`alt=1, ctrl=2, meta=4, shift=8`).",
      "type": "string",
      "enum": [
        "alt",
        "ctrl",
        "meta",
        "shift"
      ]
    },
    "PageRef": {
      "description": "Page context dictionary entry — referenced by steps via `page` id.",
      "type": "object",
      "required": [
        "id",
        "url"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "title": {
          "type": [
            "string",
            "null"
          ]
        },
        "url": {
          "type": "string"
        }
      }
    },
    "SelectedOption": {
      "description": "One selected option (`select` op).",
      "type": "object",
      "required": [
        "value"
      ],
      "properties": {
        "label": {
          "type": [
            "string",
            "null"
          ]
        },
        "value": {
          "type": "string"
        }
      }
    },
    "Step": {
      "description": "One recorded user action — discriminated union by `op`.",
      "oneOf": [
        {
          "description": "Fields shared by every step variant (flattened in JSON).",
          "type": "object",
          "required": [
            "id",
            "op",
            "page",
            "to"
          ],
          "properties": {
            "effect": {
              "anyOf": [
                {
                  "$ref": "#/definitions/StepEffect"
                },
                {
                  "type": "null"
                }
              ]
            },
            "id": {
              "type": "integer",
              "format": "uint32",
              "minimum": 0.0
            },
            "op": {
              "type": "string",
              "enum": [
                "navigate"
              ]
            },
            "page": {
              "description": "Reference into `pages[]`.",
              "type": "string"
            },
            "to": {
              "type": "string"
            }
          }
        },
        {
          "description": "Fields shared by every step variant (flattened in JSON).",
          "type": "object",
          "required": [
            "id",
            "op",
            "page",
            "target"
          ],
          "properties": {
            "effect": {
              "anyOf": [
                {
                  "$ref": "#/definitions/StepEffect"
                },
                {
                  "type": "null"
                }
              ]
            },
            "id": {
              "type": "integer",
              "format": "uint32",
              "minimum": 0.0
            },
            "op": {
              "type": "string",
              "enum": [
                "click"
              ]
            },
            "page": {
              "description": "Reference into `pages[]`.",
              "type": "string"
            },
            "target": {
              "$ref": "#/definitions/TargetDescriptor"
            }
          }
        },
        {
          "description": "Fields shared by every step variant (flattened in JSON).",
          "type": "object",
          "required": [
            "id",
            "op",
            "page",
            "target",
            "value"
          ],
          "properties": {
            "effect": {
              "anyOf": [
                {
                  "$ref": "#/definitions/StepEffect"
                },
                {
                  "type": "null"
                }
              ]
            },
            "id": {
              "type": "integer",
              "format": "uint32",
              "minimum": 0.0
            },
            "op": {
              "type": "string",
              "enum": [
                "fill"
              ]
            },
            "page": {
              "description": "Reference into `pages[]`.",
              "type": "string"
            },
            "redacted": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "target": {
              "$ref": "#/definitions/TargetDescriptor"
            },
            "value": {
              "type": "string"
            }
          }
        },
        {
          "description": "Fields shared by every step variant (flattened in JSON).",
          "type": "object",
          "required": [
            "id",
            "op",
            "page",
            "selection",
            "target"
          ],
          "properties": {
            "effect": {
              "anyOf": [
                {
                  "$ref": "#/definitions/StepEffect"
                },
                {
                  "type": "null"
                }
              ]
            },
            "id": {
              "type": "integer",
              "format": "uint32",
              "minimum": 0.0
            },
            "op": {
              "type": "string",
              "enum": [
                "select"
              ]
            },
            "page": {
              "description": "Reference into `pages[]`.",
              "type": "string"
            },
            "selection": {
              "type": "array",
              "items": {
                "$ref": "#/definitions/SelectedOption"
              }
            },
            "target": {
              "$ref": "#/definitions/TargetDescriptor"
            }
          }
        },
        {
          "description": "Fields shared by every step variant (flattened in JSON).",
          "type": "object",
          "required": [
            "id",
            "key",
            "op",
            "page"
          ],
          "properties": {
            "effect": {
              "anyOf": [
                {
                  "$ref": "#/definitions/StepEffect"
                },
                {
                  "type": "null"
                }
              ]
            },
            "id": {
              "type": "integer",
              "format": "uint32",
              "minimum": 0.0
            },
            "key": {
              "type": "string"
            },
            "modifiers": {
              "type": [
                "array",
                "null"
              ],
              "items": {
                "$ref": "#/definitions/KeyModifier"
              }
            },
            "op": {
              "type": "string",
              "enum": [
                "press"
              ]
            },
            "page": {
              "description": "Reference into `pages[]`.",
              "type": "string"
            },
            "target": {
              "anyOf": [
                {
                  "$ref": "#/definitions/TargetDescriptor"
                },
                {
                  "type": "null"
                }
              ]
            }
          }
        }
      ]
    },
    "StepEffect": {
      "description": "Observed navigation after a step (objective fact only).",
      "type": "object",
      "required": [
        "navigated_to"
      ],
      "properties": {
        "navigated_to": {
          "description": "Reference into `pages[]` for the destination page.",
          "type": "string"
        }
      }
    },
    "TargetDescriptor": {
      "description": "Stable semantic handle for an interacted element.\n\n`name` and `nearby_label` are **untrusted page text**.",
      "type": "object",
      "required": [
        "tag"
      ],
      "properties": {
        "name": {
          "type": [
            "string",
            "null"
          ]
        },
        "name_attr": {
          "type": [
            "string",
            "null"
          ]
        },
        "nearby_label": {
          "type": [
            "string",
            "null"
          ]
        },
        "placeholder": {
          "type": [
            "string",
            "null"
          ]
        },
        "role": {
          "type": [
            "string",
            "null"
          ]
        },
        "tag": {
          "type": "string"
        }
      }
    },
    "TraceEntry": {
      "description": "Recording entry point — first URL the flow starts from.",
      "type": "object",
      "required": [
        "start_url"
      ],
      "properties": {
        "start_url": {
          "type": "string"
        }
      }
    }
  }
}