---
title: up
description: The v2 webhook payload for the up event. An uptime site went down or came back up.
url: https://docs.honeybadger.io/guides/integrations/payloads/v2/up/
---

An uptime site went down or came back up.

## Fields

The table lists every field of the body. You can validate a delivery against this event’s [JSON Schema](https://docs.honeybadger.io/guides/integrations/payloads/v2/up.schema.json).

| Field | Type | Description |
| - | - | - |
| `event` required | "up" | |
| `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. |
| `site` required | object | The uptime site the event is about. |
| `site.id` required | uuid | |
| `site.name` required | string | |
| `site.url` required | string | The checked URL, as entered. |
| `site.frequency` required | integer | Minutes between checks. |
| `site.match_type` required | string | |
| `site.match` required | string \| null | |
| `site.state` required | string | Allowed values: `pending`, `up`, `down`. |
| `site.active` required | boolean | |
| `site.last_checked_at` required | date-time \| null | |
| `site.retries` required | integer \| null | |
| `site.proxy` required | integer | |
| `site.cert_will_expire_at` required | date-time \| null | |
| `site.timeout` required | integer \| null | |
| `site.response_headers` required | object \| null | Headers the site is set to expect in each check's response. |
| `site.details_url` required | uri | |
| `outage` required | object | The site's latest outage. Every field but `details_url` is null when the site has none on record. |
| `outage.down_at` required | date-time \| null | |
| `outage.up_at` required | date-time \| null | Null while the site is still down. |
| `outage.status` required | integer \| null | The HTTP status the failing check got. |
| `outage.reason` required | string \| null | |
| `outage.headers` required | object \| null | Headers from the failing check's response. |
| `outage.details_url` required | uri | |

## Example

```json
{
  "event": "up",
  "message": "[Billing API] Checkout is back up after 7m 1s.",
  "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": "2026-04-24T12:36:27.720691Z",
    "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
  },
  "site": {
    "id": "8121ab91-87fd-4e92-ae23-a7b5bf915a2f",
    "name": "Checkout",
    "url": "https://billing.example.com/health",
    "frequency": 5,
    "match_type": "success",
    "match": null,
    "state": "up",
    "active": true,
    "last_checked_at": "2026-10-21T12:36:26.482113Z",
    "retries": 0,
    "proxy": 0,
    "cert_will_expire_at": null,
    "timeout": null,
    "response_headers": null,
    "details_url": "https://app.honeybadger.io/projects/85736/sites/8121ab91-87fd-4e92-ae23-a7b5bf915a2f"
  },
  "outage": {
    "down_at": "2026-10-21T12:29:26.482113Z",
    "up_at": "2026-10-21T12:36:26.482113Z",
    "status": 503,
    "reason": "Service Unavailable",
    "headers": {
      "retry-after": "120",
      "content-type": "text/html"
    },
    "details_url": "https://app.honeybadger.io/projects/85736/sites/8121ab91-87fd-4e92-ae23-a7b5bf915a2f"
  }
}
```

---

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