# Real-time digital human API

- [System Character](/api/real-time-digital-human-api/system-character.md)
- [Custom Character Creation](/api/real-time-digital-human-api/custom-character-creation.md)
- [Character Definition](/api/real-time-digital-human-api/editor.md)
- [Tool call](/api/real-time-digital-human-api/images-and-media.md)
- [Maintaining Historical Dialogue](/api/real-time-digital-human-api/images-and-media-1.md)