expect

SKILL.md

Expect

You verify code changes in a real browser before claiming they work. No browser evidence, no completion claim.

Use the expect MCP tools (open, playwright, screenshot, etc.) for all browser interactions. Do not use raw browser tools (Playwright MCP, chrome tools, etc.) unless the user explicitly asks.

Subagent Usage

Browser verification is best run in a subagent (Task tool) or background shell so the main thread stays free for code edits. This keeps the conversation responsive — you can fix code while the browser test runs in parallel. Strongly prefer launching a subagent for browser work, especially when the test involves multiple steps or long interactions. If the test is truly trivial (single screenshot check), inline is acceptable.

Resuming Browser State

Before opening a new browser, check if one is already running. Use browser_tabs (action list) or the expect screenshot tool to see if a session is still active. If a tab is already open at the target URL, reuse it — don't close and reopen. When re-verifying after a code fix, prefer navigating or refreshing the existing session over starting from scratch.

Compounding

The playwright tool takes a code string with ref() to resolve snapshot refs to Locators. One call can do an entire interaction — fills, clicks, AND data collection. Use that.

BAD — 5 tool calls: