Action Report

Render prioritized action reports in the artifact panel via preview_action_report. The agent writes a YAML file defining an executive summary and a list of action items; the MCP App renders them as visual cards sorted by priority.

Building the Report Incrementally

CRITICAL: Large reports (6+ actions) MUST be built in batches to avoid output truncation. Do NOT attempt to write the entire YAML in a single tool call.

1. Write the file with title, subtitle, summary, and the first 2–3 actions
2. Edit the file to append the next 2–3 actions at the end of the actions array
3. Repeat step 2 until all actions are written
4. Call preview_action_report once at the end — never mid-build

Each Edit call should add at most 3 action items. This keeps individual tool call output small and prevents mid-generation truncation.

YAML Structure