volume_spike

A project’s error volume rose well above its usual level.

Fields

50

The table lists every field of the body. You can validate a delivery against this event’s JSON Schema.

Field	Type	Description
event required	"volume_spike"
message required	string	A one-line summary of the event, as notifications show it.
actor	object	The person who caused the event. Absent when Honeybadger, or an API token with no user, did.
actor.id required	integer
actor.email required	string
actor.name required	string | null
project required	object	The project the event belongs to.
project.id required	integer
project.name required	string | null
project.created_at required	date-time
project.disable_public_links required	boolean | null
project.pivotal_project_id required	string | null
project.asana_workspace_id required	string | null
project.token required	string	The project's ingestion key, the one its notifiers report with.
project.github_project required	string | null	The repository of the project's newest GitHub integration.
project.environments required	array<object>
project.environments[].id required	integer
project.environments[].project_id required	integer
project.environments[].name required	string
project.environments[].notifications required	boolean	Whether errors in this environment send notifications.
project.environments[].created_at required	date-time
project.environments[].updated_at required	date-time
project.owner required	object	The account that owns the project.
project.owner.id required	integer
project.owner.email required	string
project.owner.name required	string | null
project.last_notice_at required	date-time | null
project.earliest_notice_at required	date-time	The oldest notice the plan's retention keeps.
project.unresolved_fault_count required	integer
project.fault_count required	integer
project.active required	boolean	Whether the account is active.
project.users required	array<object>
project.users[].id required	integer
project.users[].email required	string
project.users[].name required	string | null
project.sites required	array<object>
project.sites[].id required	uuid
project.sites[].active required	boolean
project.sites[].last_checked_at required	date-time | null
project.sites[].name required	string
project.sites[].state required	string
project.sites[].url required	string	The checked URL, as entered.
project.team_id required	integer | null
project.url	uri	The project's errors page. Sent on volume_spike only.
volume_spike required	object	The error volume that triggered the spike alert.
volume_spike.observed required	integer	Errors in the window just checked.
volume_spike.baseline_median required	integer
volume_spike.factor required	number | null
volume_spike.z_score required	number | null
volume_spike.window_minutes required	integer

Example

{
  "event": "volume_spike",
  "message": "[Billing API] Errors are 3.2× your normal rate (412 in the last hour vs ~128/hr typical)",
  "project": {
    "id": 85736,
    "name": "Billing API",
    "created_at": "2026-10-21T12:36:26.076894Z",
    "disable_public_links": false,
    "pivotal_project_id": null,
    "asana_workspace_id": null,
    "token": "hbp_EXAMPLE00000000000000000000000",
    "github_project": null,
    "environments": [
      {
        "id": 2819,
        "project_id": 85736,
        "name": "production",
        "notifications": true,
        "created_at": "2026-10-21T12:36:26.470494Z",
        "updated_at": "2026-10-21T12:36:26.470494Z"
      }
    ],
    "owner": {
      "id": 92354,
      "email": "user-1@example.com",
      "name": "Acme"
    },
    "last_notice_at": null,
    "earliest_notice_at": "2026-04-24T12:36:28.498204Z",
    "unresolved_fault_count": 0,
    "fault_count": 0,
    "active": true,
    "users": [
      {
        "id": 132624,
        "email": "jane@example.com",
        "name": "Jane Doe"
      }
    ],
    "sites": [
      {
        "id": "8121ab91-87fd-4e92-ae23-a7b5bf915a2f",
        "active": true,
        "last_checked_at": "2026-10-21T12:36:26.482113Z",
        "name": "Checkout",
        "state": "up",
        "url": "https://billing.example.com/health"
      }
    ],
    "team_id": null,
    "url": "https://app.honeybadger.io/projects/85736/faults"
  },
  "volume_spike": {
    "observed": 412,
    "baseline_median": 128,
    "factor": 3.2,
    "z_score": 9.1,
    "window_minutes": 60
  }
}