> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-docs-llms-scoped-indexes.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Properties and Constraints

> Properties and Constraints for CometChat REST API.

Properties and constraints for the Agent Builder APIs.

## Agents

| **Property** | **Constraints** |
| - | - |
| Agent UID | System-generated UUID v4 (alpha-dash compatible). |
| Agent name | Max 100 characters |
| Agent instructions | Max 32,000 characters |
| Maximum agents per app | Contact support for limits |

## Tools

| **Property** | **Constraints** |
| - | - |
| Tool name | Max 100 characters |
| Maximum tools per agent | Contact support for limits |

## Knowledge Base

| **Property** | **Constraints** |
| - | - |
| Maximum file upload size | 50 MB per file |
| Supported file types | PDF, TXT, DOCX, CSV, MD |
| Maximum files per knowledge base | Contact support for limits |
| Maximum website pages per scrape | Contact support for limits |


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