# get_table_schema

Get the structure and field information for a ServiceNow table

Agent View of the PolicyLayer registry record for `get_table_schema`. HTML page: https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/get-table-schema

## Facts

- Tool: `get_table_schema`
- Server: NowAIKit — ServiceNow AI Toolkit (`nowaikit`) — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit.md
- Install: `npx -y nowaikit`
- Homepage: https://github.com/aartiq/nowaikit
- 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": "get_table_schema",
    "arguments": {}
  }
}
```

## Why get_table_schema is rated Low

This tool retrieves schema metadata (structure and field information) from ServiceNow, which is a read-only operation with no side effects. However, severity is elevated to 'medium' because schema information can reveal sensitive details about database structure, field names, and data organization that could inform attack planning or social engineering, depending on what fields exist in ServiceNow tables (e.g.,…

From the tool's own definition: "Tool name 'get_table_schema' and description 'Get the structure and field information for a ServiceNow table' indicate a retrieval operation that queries metadata about table schemas without modifying data."

## Use case

AI agents call get_table_schema to retrieve information from NowAIKit — ServiceNow AI Toolkit 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 NowAIKit — ServiceNow AI Toolkit:

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

## Other tools on NowAIKit — ServiceNow AI Toolkit (409)

- `cmdb_reconcile` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/cmdb-reconcile.md
- `delete_attachment` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/delete-attachment.md
- `delete_record` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/delete-record.md
- `delete_system_property` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/delete-system-property.md
- `delete_uib_page` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/delete-uib-page.md
- `remove_user_from_group` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/remove-user-from-group.md
- `rollback_changes` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/rollback-changes.md
- `rollback_deployment` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/rollback-deployment.md
- `visualize_aggregate` — Destructive — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/visualize-aggregate.md
- `batch_request` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/batch-request.md
- `categorize_incident` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/categorize-incident.md
- `commit_changeset` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/commit-changeset.md
- `create_business_rule` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/create-business-rule.md
- `create_flow_action` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/create-flow-action.md
- `create_scheduled_job` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/create-scheduled-job.md
- `execute_background_script` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/execute-background-script.md
- `execute_playbook` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/execute-playbook.md
- `execute_script` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/execute-script.md
- `fire_event` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/fire-event.md
- `fluent_build` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/fluent-build.md
- `fluent_explain` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/fluent-explain.md
- `fluent_init` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/fluent-init.md
- `fluent_validate` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/fluent-validate.md
- `ml_detect_anomalies` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/ml-detect-anomalies.md
- `ml_train_anomaly_detector` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/ml-train-anomaly-detector.md
- `ml_train_change_risk` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/ml-train-change-risk.md
- `ml_train_incident_classifier` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/ml-train-incident-classifier.md
- `publish_changeset` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/publish-changeset.md
- `run_aggregate_query` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/run-aggregate-query.md
- `run_atf_suite` — Execute — https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit/run-atf-suite.md
- …and 379 more: https://policylayer.com/tools/nowaikit-servicenow-ai-toolkit.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=nowaikit-servicenow-ai-toolkit · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/nowaikit-servicenow-ai-toolkit