GetStream

Build, enhance, audit, or migrate a React / Next.js web app with Stream (Chat, Video, Feeds, Moderation) - the default for all web React work. Scaffold Next.js + Tailwind + Shadcn + Stream React SDKs end-to-end with Steps 0-7. Add Chat/Video/Feeds/Moderation to an existing React project (enhance). Audit an existing Stream Video integration against best practices. Migrate/upgrade an SDK version (e.g. v13 -> v14). Migrate an existing Sendbird (@sendbird/chat, @sendbird/uikit-react) app to Stream Chat React. Triggers on 'build me a ... app', 'scaffold', 'create a new ...', 'add Chat to this app', 'integrate Video', 'drop Feeds into ...', 'upgrade'/'migrate'/'bump ... version', 'migrate from Sendbird', 'replace Sendbird with Stream', and React / Next.js tokens: stream-chat-react, @stream-io/video-react-sdk, @stream-io/feeds-react-sdk, useCreateChatClient, useCreateFeedsClient, StreamVideo, Channel, MessageList. Covers livestreaming, video conferencing, team messaging, direct messaging, social feed. Web React only

Use when creating, building, or integrating Stream Chat, Stream Video, or Stream Feeds in React Native Community CLI or Expo apps - new RN/Expo Chat / Video / Feeds apps from scratch, existing-app integration, stream-chat-react-native, stream-chat-expo, @stream-io/video-react-native-sdk, @stream-io/feeds-react-native-sdk, useCreateFeedsClient, StreamFeeds, StreamFeed, activity feed, timeline feed, notification feed, for-you feed, useFeedActivities, useActivityComments, reactions, comments, follows, migration/setup, migrate or upgrade an SDK version, upgrade stream-chat-react-native to v9, v8 to v9, bump Stream version, channel list, message list, MessageComposer, attachment picker, image/file attachments, media picker, audio messages, threads, thread list, video call, livestream, audio room, ringing, CallContent, ParticipantView, React Navigation, Expo Router, theming, offline support, push notifications, and Chat / Video / Feeds UI customization. Not for Moderation review UI.

Build and integrate Stream Chat, Video, and Feeds in Android apps. Use for Jetpack Compose, Android Studio, and Gradle project work — including Stream package setup, auth and token wiring, screen blueprints, and any follow-up Stream UI work such as adding screens, navigating between channel list and channel/message screens, channel tap handling, deep links, push routing, theming, custom channel/message UI, video calling flows (joining/starting calls, ringing, custom call controls and participant tiles), and Feeds surfaces (timeline, activity composer, threaded comments, follow graph / profile, notification feed, stories).

Stream router for Chat, Video, Feeds, and Moderation. Use when the user wants to build a new app with Stream, scaffold a project, add Chat/Video/Feeds/Moderation to an existing app, integrate Stream, audit or migrate an integration, build for Swift/SwiftUI/UIKit/iOS/Xcode/Android/Kotlin/React Native/Expo/Flutter, query Stream data, list channels, list calls, show flagged messages, find users, run getstream CLI commands, install the Stream CLI, set up Stream, configure moderation, search Stream SDK documentation, or look up Stream React/iOS/Android/Node/Flutter/Unity SDK methods. Routes to the right sub-skill based on the task.

Build, integrate, migrate to, and answer how-to questions for Stream Chat, Video, and Feeds in Swift / SwiftUI / UIKit / iOS apps. Routes each request to the exact official iOS docs page, fetches it live, and applies it - with a curated setup flow, a Sendbird -> Stream Chat migration runbook, and iOS-specific pitfalls.

The framework-agnostic Stream builder (Steps 0-7 scaffold + enhance + Video audit), being extended to support app kinds beyond web. Use ONLY when the user explicitly names 'stream-builder' or '/stream-builder'. Web React / Next.js work - 'build me a chat app', 'scaffold', 'create a new ...', 'add Chat/Video/Feeds to this app', 'integrate Video', livestreaming, video conferencing, team messaging, direct messaging, social feed - defaults to the stream-react skill, not this one. Not auto-selected for generic web build requests.

Build and integrate Stream Chat, Video, and Feeds in Flutter apps. Use for Flutter/Dart project work with Stream package setup, auth wiring, and widget blueprints. Supports stream_chat_flutter (pre-built Chat UI), stream_chat_flutter_core (custom Chat UI), stream_video_flutter (Video calling and livestreaming), and stream_feed / stream_feed_flutter_core (Activity Feeds, no pre-built UI).

Search live Stream SDK documentation for Chat, Video, Feeds, and Moderation. Look up how a Stream React/iOS/Android/Node/Flutter/Unity/Angular hook, component, or method works. Answer how-to questions about any Stream SDK across every framework and version. Triggers on 'docs', 'documentation', explicit SDK tokens (Chat React, Video iOS, Feeds Node, Moderation), and 'how do I ... in <framework>' phrasing. Answers come verbatim from getstream.io with citations - no CLI required.

Maintain WCAG-focused accessibility in stream-chat-react. Use when changing interactive components, dialogs, menus, forms, media controls, notifications, focus behavior, keyboard flows, aria attributes, or screen-reader announcements.

Styling and structure conventions for stream-chat-react. Use when adding or editing components, SCSS, or icons in this repo—file layout, styling folder structure, SCSS imports, and icon placement.

Structures plan.md files for parallel, non-overlapping agent work. Use when creating or editing execution plans, task lists for multiple agents, or when the user asks how to structure plans or split work into tasks.

Collaboration protocol for Ralph loop (Plan → Act → Reflect → Refine). Use when working from spec files in specs/<name>/ (goal.md/spec.md, plan.md, state.json, decisions.md); when executing tasks in a shared plan; or when the user mentions Ralph, multi-agent, or file-based collaboration.

Creates and manages git worktrees for isolated plan execution. Use when setting up a worktree for a plan, syncing with base branch, rebasing, or cleaning up worktrees. Never modify the main repo for plan work—all work happens in the worktree.

Automates browser interactions for web testing, form filling, screenshots, and data extraction. Use when the user needs to navigate websites, interact with web pages, fill forms, take screenshots, test web applications, or extract information from web pages.

Compares the current Stream Video Unity SDK feature or problem with the mature JavaScript, Swift, and Android SDK implementations. Use only when explicitly invoked to find proven approaches, missing context, parity gaps, and Unity-specific constraints.

Generates and writes a customer-facing Stream Video Unity SDK changelog entry from all committed changes since the latest release. Use for preparing the root CHANGELOG.md for a new SDK release.

Performs a thorough, evidence-based review of all committed changes on the current feature branch, emphasizing correctness, customer value, regressions, maintainability, and cross-platform Stream Video Unity SDK compatibility.

Write tests for the Stream Video Unity SDK. Use when creating, modifying, or reviewing test files. Covers assembly structure, naming conventions, base classes, async patterns, and all project-specific rules.

Measure React Native performance on-device for stream-chat-react-native — Hermes CPU profiles, deterministic call/listener counting, component render profiling, and memory/jank capture. Use when asked to benchmark a change, prove or disprove a perf claim, compare before/after, find what re-renders or what's heavy on the JS thread, or "do some perf testing". Drives the SampleApp on a connected Android device via the perf/ toolkit. Read this BEFORE measuring — it encodes which instrument to pick and the methodology mistakes never to repeat.

Maintain VoiceOver/TalkBack-focused accessibility in stream-chat-react-native. Use when changing interactive components, gestures, modals, lists, media controls, notifications, focus behavior, or live announcements.

Audit and maintain RTL (right-to-left) layout compatibility in stream-chat-react-native. Use when changing styles, positioning, flex layouts, swipe gestures, animated transforms, icons, text alignment, or anything that has a horizontal/directional axis.

Provides repo-grounded architecture, usage flows, and best practices for integrating WebRTC into iOS apps. Use when working on iOS WebRTC, RTCPeerConnection, RTCVideoTrack, RTCDataChannel, RTCAudioSession, camera capture, rendering, signaling, stats, diagnostics, or Swift/Objective-C WebRTC integration.

Triage Stream iOS customer issue reports from a GitHub issue URL. Validate gh CLI access and authentication, confirm whether the current checkout matches the issue repository or fall back to remote-repo inspection, read the full issue thread before assessing, classify configuration vs SDK code issues, inspect Stream iOS docs or repository evidence, and draft a ready-to-send customer reply.

Analyze iOS SDK release diffs between a source and destination ref. Summarize changes, validate changelog coverage, flag regressions, and generate manual QA scenarios.

Create a draft pull request for the Vision-Agents repo using gh CLI.

Create a git commit for the Vision-Agents repo.

Apply when adding or modifying Flutter accessibility (a11y) — Semantics widget properties, MergeSemantics, Tooltip placement, focus management, screen reader announcements, live regions, accessibility testing. Use whenever an icon-only button needs a label, a composite widget needs to be one accessible region, a modal/dialog needs announcement, a picker / autocomplete overlay opens or closes, or a meetsGuideline regression test is being written. Also applies to debugging "TalkBack focus is wrong / too small / not announced" issues.

Open a release PR: bumps versions in melos.yaml and pubspecs, finalises CHANGELOGs, opens a PR with auto-generated release notes against master (stable) or v10.0.0 (beta).

Apply when adding or modifying Flutter accessibility (a11y) in a design system or reusable component library — Semantics widget properties, MergeSemantics, ExcludeSemantics, SemanticsRole, focus management, screen reader announcements (one-shot vs live regions), and accessibility testing (meetsGuideline, tester.semantics.find, custom widget semantics). Use whenever building a new component, exposing a11y parameters (tooltip / autofocus / semanticLabel) on a public API, or wiring Semantics inside a reusable widget. Also applies to debugging "TalkBack focus / announcement / role is wrong" issues by dumping the semantics tree.