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

# Product instructions: briefs, directions, and design rules

> Where to place product briefs, company directions, agent-prompt additions, and app design rules so each lands in the correct contracted channel.

Use the channel that matches the intent:

| File or config                              | Purpose                                                 |
| ------------------------------------------- | ------------------------------------------------------- |
| `.vendo/brief.md`                           | product brief placed near the start of the agent prompt |
| `.vendo/policy.json` `directions`           | company steering returned by guard                      |
| `createAgent({ system: { instructions } })` | final host additions to the agent prompt                |
| `.vendo/design-rules.md`                    | optional rules for app generation                       |

Directions are policy data. Put them in the policy file or inline
`PolicyConfig`; there is no merge rule between two directions channels.

The agent assembles instructions fresh each turn. App generation has a separate
specialized prompt stack and receives design rules, catalog, theme, and format
limits.