# drought.county.weeks

Find US counties that experienced at least N weeks of drought at or above a specified drought severity level during a given time period, using data from the USDA/NOAA US Drought Monitor. Filter by state (or all states), drought level (D0–D4), minimum weeks threshold, and whether to count consecutive or total (non-consecutive) weeks. Returns a list of matching counties with their FIPS codes, state, and week counts. Useful for identifying persistent drought-affected regions, prioritizing disaster relief, analyzing multi-year drought patterns, and supporting agricultural or water resource planning.

Agent View of the PolicyLayer registry record for `drought.county.weeks`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/drought.county.weeks

## Facts

- Tool: `drought.county.weeks`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 6 (4 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `state` | string | no | Two-letter US state abbreviation to filter results to one state (e.g. "NE", "TX", "CA"). Leave empty to return counties from all states. |
| `end_date` | string | yes | End date for the analysis period in YYYY-MM-DD format (e.g. "2023-01-01"). Maximum range is 1 year from start_date. |
| `min_weeks` | integer | yes | Minimum number of weeks that a county must have been at or above the drought_level threshold to be included in results (e.g. 4 for counties with at least 4 week |
| `start_date` | string | yes | Start date for the analysis period in YYYY-MM-DD format (e.g. "2022-01-01"). Maximum range is 1 year from start_date. |
| `consecutive` | boolean | no | If true, counts only consecutive weeks in drought; if false or omitted (default), counts all weeks (consecutive + non-consecutive) spent at or above the thresho |
| `drought_level` | integer | yes | Minimum drought severity level to count: 0=D0 Abnormally Dry, 1=D1 Moderate Drought, 2=D2 Severe Drought, 3=D3 Extreme Drought, 4=D4 Exceptional Drought. |

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": "drought.county.weeks",
    "arguments": {
      "end_date": "<end_date>",
      "min_weeks": 0,
      "start_date": "<start_date>",
      "drought_level": 0
    }
  }
}
```

## Why drought.county.weeks is rated Low

Tool queries and filters drought data to retrieve matching counties without side effects.

From the tool's own definition: "Find US counties, returns list, filter by parameters, no modifications."

## Use case

AI agents call drought.county.weeks to retrieve information from Apibase 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 Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "drought.county.weeks": {}
  }
}
```

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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-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase