# convert_subtitles

utilpeek: Convert subtitles between SRT, WebVTT and JSON, with a time shift. To make subtitles from audio use transcribe_audio. Returns a subtitle file converted between SRT, WebVTT and a JSON segment list [{start, end, text}] (seconds, as /v1/audio/transcribe returns it), with an optional time shift in milliseconds. Strict parsing: the input format is detected, a malformed cue is named in a 422. At most 1,000,000 characters and 10,000 cues. Malformed subtitles (bad timing line, end before start, empty cue, over the limits) are a 422 naming the cue (not charged). A negative shift clamps starts at 0 and drops cues that end before 0. Typically under 0.3 s. Price: USD 0.002. Free: 10 utilpeek calls per IP per UTC day. Docs: https://tanod.dev/learn/subtitle-converter-api.html

Agent View of the PolicyLayer registry record for `convert_subtitles`. HTML page: https://policylayer.com/tools/dev-tanod-tanod/convert-subtitles

## Facts

- Tool: `convert_subtitles`
- Server: Tanod (`https://tanod.dev/mcp`) — https://policylayer.com/tools/dev-tanod-tanod.md
- Homepage: https://github.com/https://tanod.dev/mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 5 (1 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `to` | string | yes | Output format: srt (SubRip), vtt (WebVTT) or json (a list of {start, end, text}, seconds). |
| `content` | object | no | The SRT or WebVTT file as text (at most 1,000,000 characters, 10,000 cues). The format is detected from a WEBVTT header unless from_format is given. Use this or |
| `segments` | object | no | A JSON segment list [{start, end, text}] in seconds, as /v1/audio/transcribe returns it. Use this or content. |
| `shift_ms` | integer | no | Time shift in milliseconds for every cue (negative = earlier; a cue that ends before 0 is dropped). |
| `from_format` | object | no | Optional input format check: content is srt or vtt, segments are json. |

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": "convert_subtitles",
    "arguments": {
      "to": "<to>"
    }
  }
}
```

## Why convert_subtitles is rated Medium

An AI agent can call convert_subtitles faster than any human can review: one bad instruction and it creates or modifies resources in Tanod by the hundred, each call as confident as the last.

Risk signals: Accepts raw HTML/template content (content)

## Use case

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

## Recommended policy (PolicyLayer)

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

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

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- `pdf_reorder_pages` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/pdf-reorder-pages.md
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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=dev-tanod-tanod · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-tanod-tanod