fold

Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.

Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction.

Design, write, and review Effect service modules (Context.Service + Layer) using the riptide-api "deep module" pattern. Use when creating or changing an Effect service, external adapter, tagged error, layer, or its @effect/vitest tests; or when reviewing Effect code for module depth, typed-error capture-then-narrow, observability (spans/logs/Sentry), Config/Redacted secrets, and real-seam layer tests. The Slack service (apps/riptide-api/src/effects/services/slack) is the canonical reference.

Enforce the no-useEffect rule when writing or reviewing React code. ACTIVATE when writing React components, refactoring existing useEffect calls, reviewing PRs with useEffect, or when an agent adds useEffect "just in case." Provides the five replacement patterns and the useMountEffect escape hatch.