> ## Documentation Index
> Fetch the complete documentation index at: https://docs.persistence.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# File and workflow limits

> Verified limits enforced by the dashboard and public API.

These limits are enforced by the current product interfaces or public API.

| Resource | Limit |
| - | - |
| Agent import package | One `.pa` file up to 2 MB |
| Knowledge base document | PDF only, up to 5 MB per file |
| Voice-cloning clip | WAV, MP3, FLAC, OGG, M4A, or WebM under 10 MB |
| Contact-group upload | One `.csv`, `.xlsx`, or `.xls` file up to 21 MB |
| API outbound batch | Up to 1,000 recipients |
| Shared agent link | Expires after 1, 3, 7, or 15 days; up to 20 opens |
| Knowledge base name | Up to 128 characters |
| Knowledge base description | Up to 512 characters |
| Agent API name | Up to 64 characters |
| Agent API description | Up to 512 characters |
| Workspace API keys | One active key at a time |

Limits can differ from provider quotas and workspace permissions. A campaign's concurrency cannot exceed the workspace concurrency available to it.


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