> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omi.me/llms.txt
> Use this file to discover all available pages before exploring further.
# Prompt-Based Apps
> Customize Omi's behavior with prompts - no server required. Create specialized AI personalities and memory processors.
## What Are Prompt-Based Apps?
Prompt-based apps let you customize how Omi thinks and responds without writing any backend code. Simply define your prompt and Omi's behavior changes accordingly.
Everything runs on Omi's infrastructure - just write your prompt
Create, test, and publish in minutes
***
## Chat Prompts
Chat prompts alter Omi's conversational style and knowledge base. Create specialized versions of Omi for different contexts or expertise areas.
```mermaid theme={null}
flowchart LR
U[User Message] --> O[Omi + Your Prompt]
O --> R[Customized Response]
style O fill:#e1f5fe
```
When a user chats with Omi while your app is enabled:
1. Your prompt is injected into the system context
2. Omi adopts the personality/expertise you defined
3. All responses reflect your customizations
The prompt persists for the entire conversation, creating a consistent experience.
* **Expert Personas**: Make Omi communicate like a historian, scientist, or creative writer
* **Professional Advisors**: Create a fitness coach, financial advisor, or therapist persona
* **Language Tutors**: Build a conversational partner for language learning
* **Role-Playing**: Create characters for storytelling or gaming
* **Domain Experts**: Specialized knowledge in cooking, gardening, coding, etc.
### Writing Effective Chat Prompts
A great chat prompt defines personality, expertise, and response style clearly.
**Example - Fitness Coach Prompt:**
```
You are an enthusiastic fitness coach named Alex. You:
- Provide encouraging, actionable fitness advice
- Ask about the user's goals and current fitness level
- Suggest specific exercises with proper form instructions
- Celebrate progress and motivate through setbacks
- Keep responses concise but informative
```
**Example - Creative Writing Partner:**
```
You are a creative writing mentor. You:
- Help brainstorm story ideas and plot structures
- Provide constructive feedback on writing samples
- Suggest techniques for improving prose
- Share examples from famous authors when relevant
- Encourage experimentation with different styles
```
***
## Memory Prompts
Memory prompts analyze conversations and extract specific information based on your criteria. They run after each conversation is processed.
```mermaid theme={null}
flowchart LR
C[Conversation Ends] --> M[Memory Processing]
M --> P[Your Prompt]
P --> E[Extracted Information]
style P fill:#e8f5e9
```
After a conversation is transcribed and processed:
1. The full transcript is passed to your prompt
2. Your prompt extracts/summarizes specific information
3. The result is saved alongside the conversation
This creates structured data from unstructured conversations.
* **Action Items**: Extract to-do items and deadlines from meetings
* **Key Decisions**: Identify and log important decisions made
* **Meeting Notes**: Generate structured summaries
* **Sentiment Analysis**: Track emotional tone of conversations
* **Topic Extraction**: Categorize conversations by subject matter
* **Quote Collection**: Pull notable quotes or insights
### Writing Effective Memory Prompts
Be specific about what to extract and how to format the output.
**Example - Action Item Extractor:**
```
Analyze this conversation and extract all action items.
For each action item, identify:
- The task description
- Who is responsible (if mentioned)
- Any deadline or timeframe mentioned
- Priority level (high/medium/low based on context)
Format as a numbered list. If no action items exist, respond with "No action items found."
```
**Example - Meeting Summary:**
```
Create a structured summary of this meeting:
1. **Attendees**: List people mentioned
2. **Main Topics**: Bullet points of key discussion areas
3. **Decisions Made**: Any conclusions or agreements
4. **Action Items**: Tasks assigned with owners
5. **Follow-ups**: Next steps or future meetings mentioned
Keep each section concise (2-3 sentences max).
```
***
## Combining Chat and Memory Prompts
You can create apps with both chat AND memory prompts for comprehensive functionality.
**Example - Project Manager App:**
* **Chat Prompt**: Acts as a project management assistant, helping plan tasks and track progress
* **Memory Prompt**: Extracts project updates, blockers, and timeline changes from conversations
***
## Creating Your App
Decide what your app will do:
* **Chat only**: Personality/expertise customization
* **Memory only**: Information extraction
* **Both**: Complete conversational experience with data extraction
Craft clear, specific prompts:
* Define personality traits and expertise areas
* Specify extraction criteria and output format
* Include examples if helpful
Before publishing, test your app extensively (see testing section below)
Change visibility to public or submit for review (reviewed within 24 hours)
***
## Testing Your App
### Testing Memory Prompts
Open the Omi app → Settings → Enable Developer Mode
Navigate to any existing memory in your app
Tap the 3-dot menu (top right) → Developer Tools section
Test your memory prompt against the existing conversation
### Testing Chat Prompts
Create your app with visibility set to private
Install and enable your private app
Start a conversation and verify the behavior matches expectations
Refine your prompt based on the responses
***
## Best Practices
Vague prompts lead to inconsistent results. Define exact behaviors, formats, and constraints.
Try unusual inputs to ensure your prompt handles unexpected scenarios gracefully.
Single-purpose apps perform better than apps trying to do everything.
Start simple, test, and refine. Don't try to perfect the prompt on the first attempt.
Avoid prompts that could generate harmful, misleading, or inappropriate content. Apps violating community guidelines will be removed.
***
## Related Documentation
Build webhook-based apps for external integrations
Add custom tools that users can invoke in chat
Publishing guidelines and review process
Overview of all app types