# list_change_events

Query Change Events telemetry data from OneUptime. IMPORTANT: telemetry tables are large — always filter by a time range and keep limits small (e.g. 10-50). Each field accepts a direct value (exact match) or an operator object {"_type": "<Operator>", "value": ...}. Operators: EqualTo, NotEqual, IsNull, NotNull, EqualToOrNull, GreaterThan, LessThan, GreaterThanOrEqual, LessThanOrEqual, InBetween (numbers/dates), Search (partial text), Includes (array of values). Example — items from the last 24 hours: {"createdAt": {"_type": "GreaterThan", "value": "2026-01-01T00:00:00.000Z"}}.

Agent View of the PolicyLayer registry record for `list_change_events`. HTML page: https://policylayer.com/tools/com-oneuptime-mcp/list-change-events

## Facts

- Tool: `list_change_events`
- Server: OneUptime (`https://oneuptime.com/mcp`) — https://policylayer.com/tools/com-oneuptime-mcp.md
- Homepage: https://github.com/OneUptime/oneuptime
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 5
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `skip` | number | no | Number of records to skip. Default: 0. |
| `sort` | object | no | Sort order. Use "ASC" or "DESC". Example: {"time": "DESC"} for most recent first. |
| `limit` | number | no | Maximum number of records to return. Default: 10, Maximum: 100. Keep small for telemetry queries. |
| `query` | object | no | Filter criteria for Change Events. Always include a time-range filter. Each field accepts a direct value (exact match) or an operator object {"_type": "<Operato |
| `select` | object | no | Fields to return, as an object of field names to true (e.g. {"time": true, "body": true}). Select only the fields you need — telemetry rows can be large. |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_change_events",
    "arguments": {}
  }
}
```

## Why list_change_events is rated Low

Even though list_change_events only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Risk signals: High parameter count (38 properties)

## Use case

AI agents call list_change_events to retrieve information from OneUptime without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches OneUptime:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_change_events": {}
  }
}
```

## Other tools on OneUptime (222)

- `delete_alert` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-alert.md
- `delete_alert_internal_note` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-alert-internal-note.md
- `delete_alert_severity` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-alert-severity.md
- `delete_alert_state` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-alert-state.md
- `delete_alert_state_timeline` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-alert-state-timeline.md
- `delete_incident` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident.md
- `delete_incident_alert` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-alert.md
- `delete_incident_internal_note` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-internal-note.md
- `delete_incident_public_note` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-public-note.md
- `delete_incident_severity` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-severity.md
- `delete_incident_state` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-state.md
- `delete_incident_state_timeline` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-incident-state-timeline.md
- `delete_label` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-label.md
- `delete_monitor` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-monitor.md
- `delete_monitor_status` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-monitor-status.md
- `delete_monitor_status_event` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-monitor-status-event.md
- `delete_on_call_policy` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-on-call-policy.md
- `delete_postmortem_status` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-postmortem-status.md
- `delete_scheduled_maintenance_event` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-scheduled-maintenance-event.md
- `delete_scheduled_maintenance_state` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-scheduled-maintenance-state.md
- `delete_scheduled_maintenance_state_timeline` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-scheduled-maintenance-state-timeline.md
- `delete_security_case` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case.md
- `delete_security_case_evidence` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case-evidence.md
- `delete_security_case_note` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case-note.md
- `delete_security_case_priority` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case-priority.md
- `delete_security_case_status` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case-status.md
- `delete_security_case_task` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-case-task.md
- `delete_security_detection` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-detection.md
- `delete_security_playbook` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-security-playbook.md
- `delete_status_page` — Destructive — https://policylayer.com/tools/com-oneuptime-mcp/delete-status-page.md
- …and 192 more: https://policylayer.com/tools/com-oneuptime-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-oneuptime-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-oneuptime-mcp