JetBrains AI Assistant does not yet support browser sign-in for a remote MCP
server, so the connection authenticates with an Onsomble API key instead. When
JetBrains adds sign-in, this page will cover it.
Add the server
1
Create an API key
In Onsomble, open Settings → Account → API Keys and create a key. Keys
start with
ons_ and are shown once at creation: see the API
overview.2
Add the server
In your IDE, open Settings → Tools → AI Assistant → Model Context
Protocol, choose Add → Streamable HTTP, paste the address above, and
name it Onsomble.
3
Paste the key
In the server’s HTTP headers, add Authorization with the value
Bearer ons_your_api_key.