Return tool list based on context

[dleen]

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Discussion Topic

In a situation with a large amount of tools, say 1000's of possible tools, is there anything in the specification that makes it possible to update the list of available tools based on the current conversation/context instead of always returning a fixed list of tools?

In the case of notifications that the tool list has been updated, what is a good example of a situation where the list might be updated?

[wskish]

I am also trying to determine if MCP supports this concept. The are agent patterns that need a dynamic or hierarchical tool list. This is easy to accomplish when I control the completion loop but it doesn't seem like MCP currently supports this concept?

[jspahrsummers]

Our view is that this should generally be the responsibility of the MCP host. The host application knows about all the connected servers, and all of their tool lists, and would be in the best position to filter them out as necessary for the best performance.