bank_list_accounts and bank_get_balances overlap significantly since both read account information, with bank_get_balances explicitly noting it uses the same Account Information product. bank_provider_status and bank_test_connection are both connectivity-related but distinguishable as status vs. authentication test. Other tools are distinct.

All tools share the bank_ prefix and most follow a verb_noun pattern (test_connection, list_accounts, get_balances, list_transactions). However, bank_provider_status uses a noun_noun construction, which is a minor deviation from the otherwise consistent pattern.

Five tools is well-scoped for a read-only banking data server. Each tool serves a clear functional area (status, auth test, accounts, balances, transactions), and no tool feels superfluous.

The server covers the core read-only operations for banking data: accounts, balances, and transactions, plus connection testing. It lacks payment/transfer functionality, but the description explicitly states these are unavailable in the underlying API, so the surface is appropriate for the stated purpose with minor gaps.