# validate_property

Validate a property value against its declared type constraints without saving

Agent View of the PolicyLayer registry record for `validate_property`. HTML page: https://policylayer.com/tools/servicenow-mcp-server/validate-property

## Facts

- Tool: `validate_property`
- Server: ServiceNow MCP Server (`@aartiq/servicenow-mcp`) — https://policylayer.com/tools/servicenow-mcp-server.md
- Install: `npx -y @aartiq/servicenow-mcp`
- Homepage: https://github.com/aartiq/servicenow-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity verified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why validate_property is rated Low

This tool performs a validation check against type constraints, which is a read-only operation with no side effects. It queries or checks data (the property value and its constraints) but does not create, modify, delete, or execute anything. The explicit mention of 'without saving' confirms no write operations occur.

From the tool's own definition: "Tool name 'validate_property' and description states it performs validation 'without saving', indicating no data modification or execution of external operations occurs."

## Use case

AI agents call validate_property to retrieve information from ServiceNow MCP Server 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 ServiceNow MCP Server:

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

## Other tools on ServiceNow MCP Server (364)

- `delete_attachment` — Destructive — https://policylayer.com/tools/servicenow-mcp-server/delete-attachment.md
- `delete_system_property` — Destructive — https://policylayer.com/tools/servicenow-mcp-server/delete-system-property.md
- `delete_uib_page` — Destructive — https://policylayer.com/tools/servicenow-mcp-server/delete-uib-page.md
- `remove_user_from_group` — Destructive — https://policylayer.com/tools/servicenow-mcp-server/remove-user-from-group.md
- `rollback_deployment` — Destructive — https://policylayer.com/tools/servicenow-mcp-server/rollback-deployment.md
- `commit_changeset` — Execute — https://policylayer.com/tools/servicenow-mcp-server/commit-changeset.md
- `create_business_rule` — Execute — https://policylayer.com/tools/servicenow-mcp-server/create-business-rule.md
- `create_flow_action` — Execute — https://policylayer.com/tools/servicenow-mcp-server/create-flow-action.md
- `create_scheduled_job` — Execute — https://policylayer.com/tools/servicenow-mcp-server/create-scheduled-job.md
- `create_script_include` — Execute — https://policylayer.com/tools/servicenow-mcp-server/create-script-include.md
- `create_ui_action` — Execute — https://policylayer.com/tools/servicenow-mcp-server/create-ui-action.md
- `execute_background_script` — Execute — https://policylayer.com/tools/servicenow-mcp-server/execute-background-script.md
- `fire_event` — Execute — https://policylayer.com/tools/servicenow-mcp-server/fire-event.md
- `ml_detect_anomalies` — Execute — https://policylayer.com/tools/servicenow-mcp-server/ml-detect-anomalies.md
- `ml_train_anomaly_detector` — Execute — https://policylayer.com/tools/servicenow-mcp-server/ml-train-anomaly-detector.md
- `ml_train_change_risk` — Execute — https://policylayer.com/tools/servicenow-mcp-server/ml-train-change-risk.md
- `ml_train_incident_classifier` — Execute — https://policylayer.com/tools/servicenow-mcp-server/ml-train-incident-classifier.md
- `publish_changeset` — Execute — https://policylayer.com/tools/servicenow-mcp-server/publish-changeset.md
- `run_aggregate_query` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-aggregate-query.md
- `run_atf_suite` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-atf-suite.md
- `run_atf_test` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-atf-test.md
- `run_discovery_scan` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-discovery-scan.md
- `run_security_playbook` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-security-playbook.md
- `run_transform_map` — Execute — https://policylayer.com/tools/servicenow-mcp-server/run-transform-map.md
- `scan_vulnerabilities` — Execute — https://policylayer.com/tools/servicenow-mcp-server/scan-vulnerabilities.md
- `switch_update_set` — Execute — https://policylayer.com/tools/servicenow-mcp-server/switch-update-set.md
- `test_flow` — Execute — https://policylayer.com/tools/servicenow-mcp-server/test-flow.md
- `trigger_agentic_playbook` — Execute — https://policylayer.com/tools/servicenow-mcp-server/trigger-agentic-playbook.md
- `trigger_flow` — Execute — https://policylayer.com/tools/servicenow-mcp-server/trigger-flow.md
- `trigger_scheduled_job` — Execute — https://policylayer.com/tools/servicenow-mcp-server/trigger-scheduled-job.md
- …and 334 more: https://policylayer.com/tools/servicenow-mcp-server.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=servicenow-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/servicenow-mcp-server