Mythic 4.0 can render an interactive file editor inside task output when an agent command advertises task_response:file_editor.
The editor supports:
- UTF-8 text files up to 2 MB;
- save, refresh, and explicit close actions;
- version history for snapshots returned by the agent;
- SHA-1 based conflict detection;
- review of the exact staged edit before a forced overwrite;
- read-only history after the parent task completes.
Save flow
Mythic does not put the edited contents directly in interactive tasking.
It uploads the editor contents as a tracked Mythic file, then sends that file_id, the last known SHA-1, and a request ID to the agent.
Save anyway is a deliberate force-overwrite path. Review the staged file and the agent-reported conflict before using it.
Agent support
The editor appears only for a command that implements the file-editor interactive message protocol.
Commands that merely return file data or ordinary interactive terminal output continue to use their existing renderers.
Agent developers should follow the File Editor Protocol. 
