{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://circleci.com/schemas/circleci/webhook-event.json",
  "title": "CircleCI Webhook Event",
  "description": "Schema for CircleCI outbound webhook event payloads delivered via HTTP POST when workflow or job events occur in CI/CD pipelines.",
  "type": "object",
  "required": ["id", "type", "happened_at", "webhook", "project", "organization", "pipeline"],
  "discriminator": {
    "propertyName": "type"
  },
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "description": "Unique identifier for the webhook delivery, used for deduplication"
    },
    "type": {
      "type": "string",
      "enum": ["workflow-completed", "job-completed"],
      "description": "The type of webhook event"
    },
    "happened_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of when the event occurred"
    },
    "webhook": {
      "$ref": "#/$defs/WebhookReference"
    },
    "project": {
      "$ref": "#/$defs/ProjectReference"
    },
    "organization": {
      "$ref": "#/$defs/OrganizationReference"
    },
    "workflow": {
      "$ref": "#/$defs/WorkflowReference"
    },
    "job": {
      "$ref": "#/$defs/JobReference"
    },
    "pipeline": {
      "$ref": "#/$defs/PipelineReference"
    }
  },
  "$defs": {
    "WebhookReference": {
      "type": "object",
      "description": "Reference to the webhook subscription that generated this delivery",
      "required": ["id", "name"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the webhook subscription"
        },
        "name": {
          "type": "string",
          "description": "The name of the webhook subscription"
        }
      }
    },
    "ProjectReference": {
      "type": "object",
      "description": "The project associated with the event",
      "required": ["id", "name", "slug"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the project"
        },
        "name": {
          "type": "string",
          "description": "The name of the project (repository name)"
        },
        "slug": {
          "type": "string",
          "description": "The project slug in vcs-type/org-name/repo-name format",
          "pattern": "^[^/]+/[^/]+/[^/]+$"
        }
      }
    },
    "OrganizationReference": {
      "type": "object",
      "description": "The organization that owns the project",
      "required": ["id", "name"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the organization"
        },
        "name": {
          "type": "string",
          "description": "The name of the organization"
        }
      }
    },
    "WorkflowReference": {
      "type": "object",
      "description": "The workflow associated with the event",
      "required": ["id", "name", "status"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the workflow"
        },
        "name": {
          "type": "string",
          "description": "The name of the workflow"
        },
        "created_at": {
          "type": "string",
          "format": "date-time",
          "description": "When the workflow was created"
        },
        "stopped_at": {
          "type": "string",
          "format": "date-time",
          "description": "When the workflow stopped"
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "URL to view the workflow in CircleCI"
        },
        "status": {
          "type": "string",
          "enum": ["success", "failed", "error", "canceled", "unauthorized"],
          "description": "The terminal status of the workflow"
        }
      }
    },
    "JobReference": {
      "type": "object",
      "description": "The job associated with the event (present only in job-completed events)",
      "required": ["id", "name", "status", "number"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the job"
        },
        "name": {
          "type": "string",
          "description": "The name of the job"
        },
        "number": {
          "type": "integer",
          "description": "The job number"
        },
        "started_at": {
          "type": "string",
          "format": "date-time",
          "description": "When the job started"
        },
        "stopped_at": {
          "type": "string",
          "format": "date-time",
          "description": "When the job stopped"
        },
        "status": {
          "type": "string",
          "enum": ["success", "failed", "canceled", "infrastructure_fail"],
          "description": "The terminal status of the job"
        }
      }
    },
    "PipelineReference": {
      "type": "object",
      "description": "The pipeline associated with the event",
      "required": ["id", "number", "created_at"],
      "properties": {
        "id": {
          "type": "string",
          "format": "uuid",
          "description": "The unique identifier of the pipeline"
        },
        "number": {
          "type": "integer",
          "minimum": 1,
          "description": "The pipeline number"
        },
        "created_at": {
          "type": "string",
          "format": "date-time",
          "description": "When the pipeline was created"
        },
        "trigger": {
          "type": "object",
          "properties": {
            "type": {
              "type": "string",
              "description": "The type of trigger that started the pipeline"
            }
          },
          "description": "Trigger information"
        },
        "vcs": {
          "type": "object",
          "properties": {
            "provider_name": {
              "type": "string",
              "description": "The VCS provider name"
            },
            "origin_repository_url": {
              "type": "string",
              "format": "uri",
              "description": "The origin repository URL"
            },
            "target_repository_url": {
              "type": "string",
              "format": "uri",
              "description": "The target repository URL"
            },
            "revision": {
              "type": "string",
              "description": "The VCS revision (commit SHA)"
            },
            "branch": {
              "type": "string",
              "description": "The branch name"
            },
            "tag": {
              "type": "string",
              "description": "The tag name"
            },
            "commit": {
              "type": "object",
              "properties": {
                "subject": {
                  "type": "string",
                  "description": "The commit message subject"
                },
                "body": {
                  "type": "string",
                  "description": "The commit message body"
                },
                "author": {
                  "type": "object",
                  "properties": {
                    "name": {
                      "type": "string",
                      "description": "Author name"
                    },
                    "email": {
                      "type": "string",
                      "format": "email",
                      "description": "Author email"
                    }
                  },
                  "description": "Commit author"
                },
                "authored_at": {
                  "type": "string",
                  "format": "date-time",
                  "description": "When the commit was authored"
                },
                "committer": {
                  "type": "object",
                  "properties": {
                    "name": {
                      "type": "string",
                      "description": "Committer name"
                    },
                    "email": {
                      "type": "string",
                      "format": "email",
                      "description": "Committer email"
                    }
                  },
                  "description": "Commit committer"
                },
                "committed_at": {
                  "type": "string",
                  "format": "date-time",
                  "description": "When the commit was committed"
                }
              },
              "description": "Commit details"
            }
          },
          "description": "VCS information"
        }
      }
    }
  }
}