Skip to main content

​
Diff Viewer

Fased ships a built-in diff_view tool. It creates a compact HTML diff artifact under the Canvas host root and returns:
  • added/removed line counts;
  • the local artifact path;
  • a Canvas URL such as /__fased__/canvas/diffs/...html.
This is a built-in Fased review tool, not a patch-application or approval-bypass surface.

​
Inputs

The tool accepts either:
  • before and after text; or
  • unifiedDiff.
Example prompt: 
Use diff_view to compare this old text and new text, then give me the canvas URL.

​
Where It Belongs

diff_view is a core Agent tool:
  • enable/disable it in Agent > Tools;
  • use it from chat, tasks, or channels when the Agent needs to present a change;
  • use normal file tools or git commands to create the diff input.
The viewer is for review and presentation. It does not apply patches and it does not bypass approval policy.