# usda_nass_crop_evidence_pack

Combine all hosted final annual USDA NASS national metrics for one major crop/class into a provenance-backed evidence pack with latest/as-of values, prior-year changes, and exact five-year comparisons. Use this for 'build a corn production evidence pack', 'summarize national soybean acreage yield and output', or as an agriculture leg to combine with weather, freight, fuel, or futures data. Covers crop years 2019–2025 and is not a current forecast or trading recommendation.

Agent View of the PolicyLayer registry record for `usda_nass_crop_evidence_pack`. HTML page: https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/usda-nass-crop-evidence-pack

## Facts

- Tool: `usda_nass_crop_evidence_pack`
- Server: Livedatalink (`https://livedatalink.ai/mcp`) — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink.md
- Homepage: https://github.com/blackboxfoundry/livedatalink
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 4 (1 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `crop` | string | yes | Crop name or supported alias: corn, soybeans, cotton, wheat, winter wheat, durum wheat, or spring wheat. |
| `as_of_year` | integer | no | Four-digit crop year. Hosted snapshot coverage is 2019–2025. |
| `crop_class` | string | no | Optional class. Required for bare 'wheat': winter, durum, or spring (excluding durum). |
| `response_format` | string | no | Human-readable markdown or machine-readable JSON. Default markdown. |

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": "usda_nass_crop_evidence_pack",
    "arguments": {
      "crop": "<crop>"
    }
  }
}
```

## Why usda_nass_crop_evidence_pack is rated High

usda_nass_crop_evidence_pack triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

## Use case

AI agents invoke usda_nass_crop_evidence_pack to trigger actions in Livedatalink. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Livedatalink:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "usda_nass_crop_evidence_pack": {
      "limits": [
        {
          "counter": "usda_nass_crop_evidence_pack_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

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