Cleat

Each tool has a clearly distinct purpose: listing lines, listing messages, retrieving the latest code, and blocking until a new code arrives. There is no practical ambiguity between them, even though latest_code and wait_for_code both deal with codes, as one is immediate and one is waiting.

Two tools follow the verb_noun pattern (list_lines, list_messages), but latest_code uses adjective_noun and wait_for_code uses verb_preposition_noun. The naming is still readable and understandable, but the lack of a consistent verb_noun style makes it mixed.

With only 4 tools focused on a narrow domain (verification code retrieval via SMS lines), the count is well-scoped. Each tool serves a necessary function and there is no bloat or duplication.

The server covers the core workflow of listing available lines, checking recent codes, and waiting for new codes, plus a message history fallback. A minor gap is lacking a way to clear or mark codes as consumed, but for typical verification code flows these tools are sufficient.