Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

claude-test explorer agent now also blocked from the app-launch MCP tool

claude-test's explorer subagent is now also blocked from launching the app via its browser MCP tool

TierUnder the hoodhow much it should matter to you
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AreaElsewherewhat it touches
KindImprovementsin v2.1.277,
Under the hood

claude-test's explorer subagent is now also blocked from launching the app via its browser MCP tool

What

The built-in claude-test plugin's read-only explorer subagent (a helper agent meant only to look around, not make changes) is now also barred from using the claude_test_app_up tool, which launches the app under test. This is in addition to the existing block on claude_test_allow.

Why

This keeps the explorer subagent strictly read-only, preventing it from starting up the application, which is an action beyond simple exploration.

See this entry in the whole of v2.1.277 →