openApp

Open an app, or bring it to the front if running, and wait for it to appear. Never clears data, restarts the app or changes permissions. To start from a known state, use the target’s trailhead tool instead.

Source

• Kind: class-backed
• Class: xyz.block.trailblaze.toolcalls.commands.OpenAppTrailblazeTool

Contract

• Visible to LLM: yes (surface_to_llm: true)
• Recordable: yes (is_recordable: true)
• Host-only: no (requires_host: false)

Input schema

Required parameters

• appId — String Android package name or iOS bundle id, e.g. ‘com.android.settings’.

Output

Returns: string (opaque text content)

Typed result schemas (kind: query | action, MCP structuredContent) are not yet carried by the resolved manifest — this section will gain detail when that lands.