Make a cold storage for your coins right in terminal, offline.
$ git clone git@github.com:Overtorment/cli-cold-wallet.git
$ cd cli-cold-wallet
$ npm install
$ nodejs cli-cold-wallet.js

OR
$ nodejs cli-cold-wallet-ethereum.js
OR
$ nodejs cli-cold-wallet.js > my-bitcoin-wallet.txt # save to file
OR
$ nodejs cli-cold-wallet-with-password.js # will prompt for password
WTFPL
—
$ claude mcp add cli-cold-wallet \
-- python -m otcore.mcp_server <graph>