# bea.national.gdp

Retrieve US Real GDP growth rates from BEA NIPA Table T10101 (Fisher Quantity Index, percent change at annual rate). Returns quarterly or annual percent-change series for total GDP, personal consumption expenditures, gross private investment, exports, imports, and government spending. Official US national accounts data from the Bureau of Economic Analysis. Use for macro analysis, economic forecasting, and recession detection.

Agent View of the PolicyLayer registry record for `bea.national.gdp`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/bea.national.gdp

## Facts

- Tool: `bea.national.gdp`
- 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: 2
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `year` | string | no | Year(s) to retrieve. Single year (e.g. "2023"), comma-separated list ("2021,2022,2023"), "LAST5" for latest 5 years, "LAST10" for latest 10, or "X"/"ALL" for al |
| `frequency` | string | no | Data frequency: A=Annual, Q=Quarterly, M=Monthly. Multiple values comma-separated (e.g. "A,Q"). Defaults to A. |

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": "bea.national.gdp",
    "arguments": {}
  }
}
```

## Why bea.national.gdp is rated Low

Tool retrieves published economic data with no side effects, modifications, or external operations.

From the tool's own definition: "Retrieve US Real GDP growth rates from BEA NIPA Table T10101"

## Use case

AI agents call bea.national.gdp 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": {
    "bea.national.gdp": {}
  }
}
```

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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