Long-running tasks are an open topic of discussion, and I think MCP intends to address it in the future.
There are a few proposals floating around, but one issue is that you don't always know whether a task will be long-running, so having separate APIs for long-running tasks vs "regular" tool calls doesn't fully address the problem.
It'd be nice to more closely integrate MCP into something like Airflow, with hints as to expected completion time.
Real world LLM is going to be built on non-negligible (and increasingly complicated) deterministic tools, so might as well integrate with the 'for all possible workflows' use case.
There are a few proposals floating around, but one issue is that you don't always know whether a task will be long-running, so having separate APIs for long-running tasks vs "regular" tool calls doesn't fully address the problem.
I've written a proposal to solve the problem in a more holistic way: https://github.com/modelcontextprotocol/modelcontextprotocol...