Eventual provides a Future & Stream abstraction for Rust as well as a number of computation builders to operate on them.
To use Eventual, first add this to your Cargo.toml:
[dependencies.eventual]
git = "https://github.com/carllerche/eventual"
Then, add this to your crate root:
extern crate eventual;
$ claude mcp add eventual \
-- python -m otcore.mcp_server <graph>