# check_eligibility

Look up coverage and eligibility status for a health plan member.

Agent View of the PolicyLayer registry record for `check_eligibility`. HTML page: https://policylayer.com/tools/a-claims-query-agent/check-eligibility

## Facts

- Tool: `check_eligibility`
- Server: A-Claims-Query-Agent (`pradeep91k/A-Claims-Query-Agent`) — https://policylayer.com/tools/a-claims-query-agent.md
- Homepage: https://github.com/pradeep91k/A-Claims-Query-Agent
- Risk category: Read (Low risk)
- Registry record: grade A, 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": "check_eligibility",
    "arguments": {}
  }
}
```

## Why check_eligibility is rated Low

Even though check_eligibility only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call check_eligibility to retrieve information from A-Claims-Query-Agent 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 A-Claims-Query-Agent:

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

## Other tools on A-Claims-Query-Agent (2)

- `check_claim_status` — Read — https://policylayer.com/tools/a-claims-query-agent/check-claim-status.md
- `get_denial_reason` — Read — https://policylayer.com/tools/a-claims-query-agent/get-denial-reason.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=a-claims-query-agent · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a-claims-query-agent