Aider was designed to do single turns becasue LLMs were way worse when it was created. That being said, Aider could do multiple turns of tool calling if command confirmation was turned off, and it was trivial to configure Aider to do multiple turns of code generation by having a test suite that runs automatically on changes and telling Aider to implement functionality to get the tests to pass. It's hard coded to only do 3 autonomous turns by default but you can edit that.

Yes but unfortunately it appears that Aider development has completely stopped. There had been an MCP support PR that was open for over half a year, many people validated it and worked on it but the project owner never responded.

It’s a bit of a shame, as there are plenty of people that would love to help maintain it.

I guess sometimes that’s just how things go.