# check_applicability

Determine which EU regulations apply to an entity based on its sector and optional subsector. Returns a {results, meta} envelope: one cited row per applicable regulation with confidence level (definite / likely / possible), the basis article, contextual notes, and a source_url/publisher/license _citation to the basis provision (or the instrument when the basis article is not provision-addressable). meta carries entity scope + confidence counts; detail_level=summary adds next steps.

Agent View of the PolicyLayer registry record for `check_applicability`. HTML page: https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp/check-applicability

## Facts

- Tool: `check_applicability`
- Server: Eu Regulations (`https://gateway.ansvar.eu/mcp`) — https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp.md
- Homepage: https://github.com/Ansvar-Systems/EU_compliance_MCP
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server auth posture: gated
- 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": "check_applicability",
    "arguments": {}
  }
}
```

## Why check_applicability is rated Low

This tool retrieves and queries information about EU regulations—which ones apply to a given entity—without modifying data, executing code, or causing side effects. It is a lookup/search function that returns informational results (regulations, articles, confidence levels, citations). The confidence reflects clear language indicating read-only retrieval with zero destructive or executable intent.

From the tool's own definition: "Tool description explicitly states it 'Determine[s] which EU regulations apply' and 'Returns a {results, meta} envelope' with cited rows, articles, and contextual notes. No modify, delete, or execute operations mentioned."

## Use case

AI agents call check_applicability to retrieve information from Eu Regulations 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 Eu Regulations:

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

## Other tools on Eu Regulations (4)

- `compare_requirements` — Read — https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp/compare-requirements.md
- `get_evidence_requirements` — Read — https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp/get-evidence-requirements.md
- `get_regulation_guide` — Read — https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp/get-regulation-guide.md
- `map_controls` — Read — https://policylayer.com/tools/eu-ansvar-eu-regulations-mcp/map-controls.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=eu-ansvar-eu-regulations-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/eu-ansvar-eu-regulations-mcp