# opentopodata.elevation.batch

Get land surface elevation for up to 100 lat/lon coordinates in a single request. All points share the same dataset (srtm90m default, srtm30m, or aster30m). Returns an array of results, each with elevation_m, lat, lon, and dataset. Ideal for elevation profiling along a route, contour-line computation, or bulk terrain analysis. MIT licence, no auth, no upstream cost.

Agent View of the PolicyLayer registry record for `opentopodata.elevation.batch`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/opentopodata.elevation.batch

## Facts

- Tool: `opentopodata.elevation.batch`
- 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: 3 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `dataset` | string | no | Elevation dataset applied to all locations: srtm90m (default), srtm30m, aster30m |
| `locations` | array | yes | Array of lat/lon objects to query (1–100 locations per request) |
| `interpolation` | string | no | Interpolation method: bilinear (default) or nearest |

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": "opentopodata.elevation.batch",
    "arguments": {
      "locations": []
    }
  }
}
```

## Why opentopodata.elevation.batch is rated Low

Retrieves public elevation data without modifying or executing operations on systems.

From the tool's own definition: "Get land surface elevation for up to 100 lat/lon coordinates"

## Use case

AI agents call opentopodata.elevation.batch 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": {
    "opentopodata.elevation.batch": {}
  }
}
```

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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