API Key

An API key is a "service authentication key string" required for authentication when using the AmiVoice API.

It is mandatory as a request parameter authorization for speech recognition requests, and is also necessary when using APIs such as the User Dictionary Registration API and the Word Registration Class Name API.

note

In documents prior to 2026/04/13, it was referred to as "APPKEY" and "One-time APPKEY". Currently, we have unified the terminology to "API key". The "API key" mentioned on this page refers to the former "APPKEY" and "One-time APPKEY".

In addition to the API key initially assigned when creating an account, users can issue additional API keys themselves. There is no limit to the number of additional API keys that can be issued, and it is possible to have multiple valid API keys simultaneously for a single account. Furthermore, it is possible to set usage restrictions on additionally issued API keys.

This section will explain the following in order:

• Available Restrictions and Features
• How to Issue API Keys
  • How to Issue API Keys on MyPage
  • How to Use the API Key Issuance API