> For the complete documentation index, see [llms.txt](https://docs.perceptis.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.perceptis.ai/perceptis-mcp-server/credits-and-limits.md).

# Credits and limits

Credit costs, polling limits, rate limits, and download link expiry.

## Credit costs

| Operation               | Cost               |
| ----------------------- | ------------------ |
| Generate a single slide | 1 credit           |
| Generate a deck         | 1 credit per slide |
| Any edit                | Free               |

Credits are shared across your organization. View your balance from the main app. Deck credits are charged after the storyline phase — the final count depends on how many slides the AI generates.

## Timeouts

Each polling window lasts 45 seconds. If generation is still running, the AI polls again (up to 38 times, about 28 minutes in total) until the result is ready or an error occurs.

A single slide usually takes about 4 minutes. A full deck usually takes about 18 minutes.

## Rate limits

The MCP surface applies a per-user sliding-window limit so a runaway client loop can't exhaust capacity for the rest of your org:

| Tool category                                                                                                                | Limit                |
| ---------------------------------------------------------------------------------------------------------------------------- | -------------------- |
| Generation and edit tools (`generate_slide`, `edit_slide`, `generate_deck`, `render_deck`, `export_deck`, `edit_deck_slide`) | 60 calls per minute  |
| Read tools (`check_generation_status`, `show_slide_preview`, `list_templates`)                                               | 600 calls per minute |

When a limit is exceeded the tool returns `{"error": "...", "code": "rate_limited", "retry_after_seconds": 60}`. Wait a minute, then retry.

## Download links

* **Download links** for a slide or a deck (the merged `.pptx`) expire after **1 hour**.

If a link expires, ask your AI client to show the slide or deck preview again to get a fresh one.