# get_effective_oop_policy

Get effective OOP validation policy for a file or directory target.

Agent View of the PolicyLayer registry record for `get_effective_oop_policy`. HTML page: https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/get-effective-oop-policy

## Facts

- Tool: `get_effective_oop_policy`
- Server: TwinCAT Validator MCP Server (`agenticcontrolio/twincat-validator-mcp`) — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp.md
- Homepage: https://github.com/agenticcontrolio/twincat-validator-mcp
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- 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_effective_oop_policy",
    "arguments": {}
  }
}
```

## Why get_effective_oop_policy is rated Low

This tool retrieves and queries the current OOP validation policy settings applicable to a file or directory. It performs a read-only lookup operation that returns configuration state without side effects, making it a Read category tool with low severity risk — an AI agent cannot cause harm by retrieving policy information.

From the tool's own definition: "Tool name 'get_effective_oop_policy' and description 'Get effective OOP validation policy for a file or directory target' indicate retrieval of configuration/policy information with no modification or execution of external operations."

## Use case

AI agents call get_effective_oop_policy to retrieve information from TwinCAT Validator 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 TwinCAT Validator MCP Server:

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

## Other tools on TwinCAT Validator MCP Server (15)

- `process_twincat_batch` — Execute — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/process-twincat-batch.md
- `verify_determinism_batch` — Execute — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/verify-determinism-batch.md
- `process_twincat_single` — Other — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/process-twincat-single.md
- `check_specific` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/check-specific.md
- `get_context_pack` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/get-context-pack.md
- `get_validation_summary` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/get-validation-summary.md
- `lint_oop_policy` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/lint-oop-policy.md
- `suggest_fixes` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/suggest-fixes.md
- `validate_batch` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/validate-batch.md
- `validate_file` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/validate-file.md
- `validate_for_import` — Read — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/validate-for-import.md
- `autofix_batch` — Write — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/autofix-batch.md
- `autofix_file` — Write — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/autofix-file.md
- `extract_methods_to_xml` — Write — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/extract-methods-to-xml.md
- `generate_skeleton` — Write — https://policylayer.com/tools/agenticcontrolio-twincat-validator-mcp/generate-skeleton.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=agenticcontrolio-twincat-validator-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/agenticcontrolio-twincat-validator-mcp