Replit Agent

Agent uses powerful AI technology to transform your ideas into applications and seamlessly add new features by describing what you want.

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Features

Chat with Agent in your Replit App to receive the following support:

• Create full-stack apps from scratch
• Add advanced features and integrate complex APIs
• Design, create, and modify database structures
• Streamline environment setup and dependency management

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Usage

You can access Agent in your Replit App workspace by selecting the Agent tool.

From the Agent tool, you can perform the following actions:

• Chat: Describe your app or feature in the text area and respond to Agent’s follow-up questions
• Add detailed requests: Upload files or import content from URLs to give Agent more information
• Manage conversations: Select New chat or select previous conversations from the menu icon to start or resume a conversation
• Track usage: Select the usage icon at the top right to view your billing page
• Reverse changes: Undo changes made by Agent by selecting Rollback to here

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Chat prompts

To communicate your request to Agent, enter a prompt in the text area. A prompt is a natural language instruction that describes the task you want Agent to perform.

In addition to text, you can include the following data in your prompt:

• File attachments: Drag a file into the text area or select the paperclip icon
• Web content: Include text data from a webpage by entering a URL and selecting Copy page content
• Webpage screenshots: Include a screenshot of a webpage by entering a URL and selecting Take screenshot

You can access attachments from your prompts by opening the Files tab and navigating to the attached_assets directory.

You can also perform the following actions in the Agent prompt area:

• Prompt refinement: Let AI add detail to your first prompt by selecting Improve prompt
• Feedback: After Agent finishes processing a prompt, you can select Have feedback? to send feedback to Replit
• Pause: Stop Agent by selecting Pause above the text area

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Checkpoints

A checkpoint is a saved snapshot of your Replit App that captures completed work from Agent. Agent creates meaningful checkpoints when it finishes implementing your request, ensuring you only pay for completed functionality.

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How checkpoints work with effort-based pricing

Agent’s new effort-based pricing creates checkpoints that reflect the actual work performed:

• One checkpoint per request: Agent bundles all work for your request into a single, meaningful checkpoint
• Variable pricing: Simple changes cost less, while complex builds cost more based on the effort required
• Transparent costs: Each checkpoint shows exactly what you’re paying for that completed work
• No intermediate billing: You’re not charged for Agent’s thinking or planning process

Each checkpoint lets you perform the following actions:

• Rollback: Undo changes made by Agent and return to the state of the previous checkpoint
• Track usage: Hover over the usage icon in a checkpoint to view the amount billed for that checkpoint

When Agent receives your initial prompt to setup and create an app, it presents an implementation plan for your review. Select Approve plan & start to let Agent start building your app.

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Advanced capabilities

For complex projects, you can enable advanced Agent capabilities:

Extended Thinking: Instructs Agent to analyze your request more thoroughly, considering multiple approaches and edge cases. Best for architectural decisions or when you need comprehensive solutions.

High Power Model: Uses more sophisticated AI models for advanced problem-solving. Ideal for complex integrations, performance optimizations, or unfamiliar technologies.

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Progress tab

The Progress tab shows a record of Agent’s actions. You can use it to view the following:

• Real-time updates: monitor Agent’s progress and navigate directly to relevant files by selecting the link icon
• Chronological history: review Agent’s activities to understand the details of the changes and troubleshoot issues when needed

The following animation shows the Progress tab in action:

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Getting the most from Agent

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Best practices for prompts

• Be specific: Describe exactly what you want your app to do
• Provide context: Include relevant files, URLs, or examples
• Start simple: Begin with basic functionality and add complexity gradually
• Use examples: Show Agent similar apps or features you want to emulate

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Managing costs effectively

• Start with free planning: Review Agent’s implementation plan before approving work
• Use simple requests: Break complex projects into smaller, focused tasks
• Set spending limits: Configure usage alerts and budgets to control costs
• Monitor usage: Track checkpoint costs to understand pricing patterns

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Next steps

Ready to start building with Agent? Here’s how to begin:

1. Create your first app: Use the Create with AI quickstart
2. Learn effective prompting: Follow our vibe coding guide
3. Set up billing controls: Configure spending management
4. Explore advanced features: Try Extended Thinking and High Power Model for complex projects

Learn more about Agent pricing or explore other Replit AI tools.