# get_attachment_metadata

Get metadata (name, type, size) of a specific attachment by its sys_id

Agent View of the PolicyLayer registry record for `get_attachment_metadata`. HTML page: https://policylayer.com/tools/servicenow-mcp-server/get-attachment-metadata

## Facts

- Tool: `get_attachment_metadata`
- 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": "get_attachment_metadata",
    "arguments": {}
  }
}
```

## Why get_attachment_metadata is rated Low

This tool only retrieves and returns metadata about an existing attachment; it does not modify, delete, or execute any operations. The blast radius of misuse is minimal—an agent could learn details about attachments but cannot alter, access file contents, or trigger external actions. Classified as Read with low severity.

From the tool's own definition: "Tool retrieves attachment metadata (name, type, size) by sys_id. The verb 'Get' and explicit mention of metadata retrieval indicate read-only query behavior with no side effects."

## Use case

AI agents call get_attachment_metadata 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": {
    "get_attachment_metadata": {}
  }
}
```

## 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