echo

Each tool has a distinct purpose: status checking, key collection, order creation, speech synthesis, and voice listing. The only slight overlap is between echo_collect_key and echo_order, but descriptions clarify that one is for payment and the other for key retrieval.

All tools follow a consistent pattern: echo_verb_noun (e.g., echo_beacon, echo_collect_key, echo_order). The names are uniform and predictably structured.

With 5 tools, the server is well-scoped for its purpose of providing ECHO API functionality. Each tool covers a distinct step in the TTS workflow without unnecessary bloat.

The core TTS workflow (create order, collect key, synthesize, list voices) is covered, but there are gaps: no tool for checking balance/credits, no way to cancel an order, and no tool for managing multiple orders or refunds. Agents can work around basic usage, but more advanced lifecycle management is missing.