These instructions cover Replit. New to this? Start with Connect your AI agent to Pastel for an overview of what Replit will be able to do once it's connected.
You'll need: a Pastel account, and Pastel's MCP server URL:
https://api.usepastel.com/mcp
Set it up
The quickest way is our install link. Click Add Pastel to Replit and Replit opens its integrations page with Pastel's name and URL already filled in. Click Test & save, then complete the authorization flow to sign in to Pastel and approve access.
To add it by hand instead:
Log in to Replit and click Integrations in the sidebar
Click on the "Your integrations" tab
Then click Add custom → + Add personal MCP server
Set the display name to Pastel. Replit uses this name when it refers to the server in chat.
Enter the MCP server URL:
https://api.usepastel.com/mcpClick Test & save, then complete the authorization flow.
You can skip Advanced settings. Pastel signs you in with OAuth, so there are no headers or API keys to add.
The connection lives on your Replit account rather than a single app, so Replit can reach Pastel from every project you work on.
Check that it worked
Start a new chat and ask:
Use the Pastel MCP server to list my canvases.
If Replit comes back with your canvases, you're connected. Naming the server in that first message helps, and it's worth doing whenever it seems to have forgotten Pastel is there.
Get the most out of it
Replit writes and deploys your app, and your canvas is usually pointed at the deployment URL, so the feedback and the code that caused it sit in the same place. Hand Replit a comment and let it run the whole thing:
Take comment #14 on the pricing page canvas. Work out what's causing it, fix it, reply on the comment explaining what you changed, and mark it resolved.
Pastel sends Replit a canvas-specific investigation guide with every comment (which page to open, which element the comment is pinned to, where the screenshot is), so you don't need to explain any of that yourself.
You can also hand it a whole batch:
Go through the unresolved comments on the staging canvas, fix the ones that are clearly CSS issues, and leave the rest for me with a reply saying why.
Managing your connection
Every agent you've connected is listed in the MCP section of your Pastel profile settings, and can be disconnected there at any time.
To remove it from Replit's side as well, go back to your Integration settings and disconnect it under Connectors.
Replit only ever sees the canvases and comments that you can see, because it acts as you.
Something not working?
Replit changes quickly and these steps can fall out of date. If a menu isn't where we've said it is, or the connection won't complete, let us know and we'll help you out.