GitHub is managed through the Claude GitHub App rather than a connection in this list; see Configure GitHub access.
Services marked (custom) have no preset button. Add them with Custom tool following their guide.
Connect a service that has no guide
You can add any app that has an API as a custom connection or a custom MCP server, including services this page has no guide for. See Connect a custom service for the credential types and form fields.When a connection fails after setup
If Claude says it can’t reach a service you connected, start with the checks at the top of Troubleshoot Claude Tag setup. Confirm the connection is in a bundle attached to the channel’s scope, and rerun the test in a new thread, since a session loads its connections when it starts. Two entries on the troubleshooting page cover connection failures directly:- A connection works in one channel but not another: bundles attach per scope, so the failing channel’s scope is likely missing the bundle
- I hit an authentication error and couldn’t finish this turn: Claude posts that message when its own request fails an authentication check. A connected service’s failing credential surfaces as a tool error inside Claude’s reply instead