Feishu permissions

Use the single feishu_perm tool and its current action schema. This tool is disabled by default because it changes access to user data; if it is unavailable, explain that channels.feishu.tools.perm must be enabled.

Workflow

1. Resolve the exact file token and type.
2. Use list to inspect current collaborators before changing access.
3. For add, resolve the collaborator's exact identifier and choose the least permission that satisfies the request.
4. For remove, confirm the exact collaborator and file when the request is ambiguous or broad.
5. Report the resulting permission change without exposing unrelated collaborator data.

Never infer an email, user ID, department, or chat from a display name alone. Follow the current schema for supported member types, token types, and permission levels.