# openaq_measurements

Get air quality measurements from OpenAQ.

Agent View of the PolicyLayer registry record for `openaq_measurements`. HTML page: https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server/openaq-measurements

## Facts

- Tool: `openaq_measurements`
- Server: UnClick (`@unclick/mcp-server`) — https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server.md
- Install: `npx -y @unclick/mcp-server`
- Homepage: https://github.com/malamutemayhem/unclick-agent-native-endpoints.git
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 5 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | number | no |  |
| `date_to` | string | no |  |
| `date_from` | string | no |  |
| `parameter` | string | no |  |
| `location_id` | number | yes |  |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "openaq_measurements",
    "arguments": {
      "location_id": 0
    }
  }
}
```

## Why openaq_measurements is rated Low

This tool performs a read-only query operation that retrieves environmental data from an external API. There are no side effects, data modifications, deletions, code execution, or financial implications. The primary function is to fetch and display air quality measurement data, making it a classic Read category tool.

From the tool's own definition: "Tool retrieves air quality measurements from OpenAQ; description contains 'Get' which indicates data retrieval with no stated modification or deletion capabilities."

## Use case

AI agents call openaq_measurements to retrieve information from UnClick 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 UnClick:

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

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## 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=io-github-malamutemayhem-unclick-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-malamutemayhem-unclick-mcp-server