# ncei.climate.daily_data

Retrieve historical daily weather observations from NOAA NCEI — max/min temperature, precipitation, snowfall, wind speed. 260+ years of records from global stations. Values in tenths of °C (temp) and tenths of mm (precip). Source: GHCND dataset.

Agent View of the PolicyLayer registry record for `ncei.climate.daily_data`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/ncei.climate.daily-data

## Facts

- Tool: `ncei.climate.daily_data`
- 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: 4 (3 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `end_date` | string | yes | End date in YYYY-MM-DD format (e.g. 2025-01-31). Max 1 year range. |
| `datatypes` | string | no | Comma-separated data types: TMAX (max temp), TMIN (min temp), PRCP (precipitation), SNOW, AWND (avg wind). Default: all. |
| `start_date` | string | yes | Start date in YYYY-MM-DD format (e.g. 2025-01-01) |
| `station_id` | string | yes | NCEI station ID (e.g. GHCND:USW00094728 for Central Park, NY). Get from ncei.stations tool. |

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": "ncei.climate.daily_data",
    "arguments": {
      "end_date": "<end_date>",
      "start_date": "<start_date>",
      "station_id": "<station_id>"
    }
  }
}
```

## Why ncei.climate.daily_data is rated Low

Tool only queries historical weather data with no side effects or ability to modify external systems.

From the tool's own definition: "Retrieve historical daily weather observations; no modification or deletion capability."

## Use case

AI agents call ncei.climate.daily_data 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": {
    "ncei.climate.daily_data": {}
  }
}
```

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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