# wto.trade.topics

List all WTO time-series database topic categories with their numeric IDs and names. Topics group related datasets — for example: World Tariff Profiles (topic 3), I-TIP non-tariff measures (topic 1), Merchandise Trade Values (topic 7), Commercial Services Trade (topic 12). Use the topic ID in wto.trade.indicators (topic_id parameter) to filter and discover the specific indicator codes available within that data domain. Returned topics correspond to the WTO Statistics Portal database groupings maintained by the WTO Statistics Division.

Agent View of the PolicyLayer registry record for `wto.trade.topics`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/wto.trade.topics

## Facts

- Tool: `wto.trade.topics`
- 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: 1
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `locale` | string | no | Response language. Currently only English is supported by the WTO API (lang=1). Reserved for future use; leave unset. |

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": "wto.trade.topics",
    "arguments": {}
  }
}
```

## Why wto.trade.topics is rated Low

Tool retrieves and lists WTO database topic metadata with no side effects or modifications.

From the tool's own definition: "List all WTO time-series database topic categories with their numeric IDs and names."

## Use case

AI agents call wto.trade.topics 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": {
    "wto.trade.topics": {}
  }
}
```

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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