# slides_generate_narration

Add AI voice narration to a completed Nano Banana job (slides_create_like_this or slides_create_pdf_slides only; Fast PPT not supported). Async only — poll result with jobs_get. mode=

Agent View of the PolicyLayer registry record for `slides_generate_narration`. HTML page: https://policylayer.com/tools/2slides-mcp-2slides/slides-generate-narration

## Facts

- Tool: `slides_generate_narration`
- Server: 2slides MCP Server (`2slides/mcp-2slides`) — https://policylayer.com/tools/2slides-mcp-2slides.md
- Homepage: https://github.com/2slides/mcp-2slides
- Risk category: Write (Medium risk)
- Registry record: grade B, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "slides_generate_narration",
    "arguments": {}
  }
}
```

## Why slides_generate_narration is rated Medium

The tool creates new content (voice narration) and attaches it to an existing presentation artifact. This is a modification operation that changes the slide output but does not delete or destroy data irreversibly. While it performs a media generation task, the net effect is adding reversible content to a project.

From the tool's own definition: "Tool modifies a completed slide job by adding narration to it ('Add AI voice narration to a completed Nano Banana job')."

## Use case

AI agents use slides_generate_narration to create or update resources in 2slides MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 2slides MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches 2slides MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "slides_generate_narration": {
      "limits": [
        {
          "counter": "slides_generate_narration_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on 2slides MCP Server (6)

- `jobs_get` — Read — https://policylayer.com/tools/2slides-mcp-2slides/jobs-get.md
- `slides_download_slides_pages_voices` — Read — https://policylayer.com/tools/2slides-mcp-2slides/slides-download-slides-pages-voices.md
- `themes_search` — Read — https://policylayer.com/tools/2slides-mcp-2slides/themes-search.md
- `slides_create_like_this` — Write — https://policylayer.com/tools/2slides-mcp-2slides/slides-create-like-this.md
- `slides_create_pdf_slides` — Write — https://policylayer.com/tools/2slides-mcp-2slides/slides-create-pdf-slides.md
- `slides_generate` — Write — https://policylayer.com/tools/2slides-mcp-2slides/slides-generate.md

## 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=2slides-mcp-2slides · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/2slides-mcp-2slides