Each project can define custom instructions that the AI uses on every interaction in that project. These augment, rather than replace, the organization-wide company context. Open Project Settings, write your instructions in the single Instructions field, and save the project settings. Use this field for project-specific guidance such as:Documentation Index
Fetch the complete documentation index at: https://docs.zylon.ai/llms.txt
Use this file to discover all available pages before exploring further.
- what this project is for
- who it serves
- important acronyms or domain context
- preferred response style or language
feature.maxInstructionsLength in /etc/zylon/zylon-conf.yaml. The default limit is 4000, and the same limit is enforced in both the Workspace UI and the API. For operator-side configuration, see Project custom instructions.

Advanced Settings
Project settings also include two advanced toggles:
- Citations: Enables or disables citations in Zylon chat responses for that project.
- System prompt: Keeps or removes Zylon’s default prompt layer. This prompt cannot be edited from the UI, only removed.
Behavior: Custom instructions apply at the project level and shape how Zylon responds in that project together with the organization-wide company context.