Conciseness

The body is dense and expert-grade — it explains no general concepts, assumes RN/Expo competence, and nearly every line carries a non-obvious failure mode or exact command (e.g. "`getstream env` writes `.env` to the folder `getstream init` ran in... move it next to the app's `package.json`, or Metro never reads it"). It misses anchor 5 because time-sensitive version pins are inlined rather than isolated ("Expo SDK 57 pins react-native-reanimated@4.5.0 + react-native-worklets@0.10.0", "SDK 58", "RN 0.85 / Expo 56"), which the rubric directs penalizing unless placed in a deprecated/old-patterns section.

Actionability

Guidance is fully executable: copy-paste commands (`cat $(getstream docs chat-sdk/react-native)/INDEX.md`, `getstream api UpdateApp --request '{"video_primary_use_case":"livestreaming"}'`), exact install sets per lane, concrete props (`keyboardVerticalOffset={0}` and `topInset={0}`), exact code patterns (`if (call.state.callingState !== CallingState.LEFT) await call.leave()`), and named components/hooks with what breaks without them. Anchor 5 (copy-paste ready, common cases covered) matches; there are no pseudocode or hand-wavy steps that would drop it to 4.

Workflow Clarity

Each scenario is clearly sequenced (docs-first pinning of the major, then setup, then build, then verify), and validation is explicit: an entire Verify section with type-check, native build, simulator run, two-user live-delivery testing, and a per-default checklist, plus a pre-write safety gate for app-wide `getstream api` writes ("run `getstream status` and tell the user which app it will change"). Error-recovery feedback is built in (e.g. "a gap between the composer and the picker means `topInset` is wrong", "a failing check reads as green" pipe warning), matching anchor 5; anchor 4's 'minor validation gaps' is not in evidence.

Progressive Disclosure

References are clearly signaled and one level deep ("follow chat-versions.md", "as basics/offline-support.md shows", "follow design-matching.md"), but the bundle contains no references/, scripts/, or assets/ directories — none of the ~13 referenced files (chat-versions.md, ai-integration.md, simulator-verification.md, sendbird-migration.md, basics/offline-support.md, guides/push-notifications.md, design-matching.md, stream-agents.md) resolve to real files. Scoring against the actual bundle structure as directed, the navigation is broken and a substantial amount of version-specific detail (native setup gotchas, keyboard inset arithmetic) is inlined in the always-loaded body. Anchor 3 (references present but the organization leaves significant content inline / structure could be better) is the best fit; it is not 4 because the missing files are more than a minor organization gap, and not 2 because the body is well-sectioned and references are explicitly, not buryingly, signaled.

Specificity

The description lists multiple concrete, verbatim actions ("Build, integrate, audit, or upgrade", "Scaffold a new app", "migrate from Sendbird (@sendbird/chat, @sendbird/uikit-react-native)") and names concrete SDK packages (stream-chat-react-native, stream-chat-expo, @stream-io/video-react-native-sdk, @stream-io/feeds-react-native-sdk) plus feature surfaces (MessageComposer, CallContent, ParticipantView). Coverage across Chat, Video, and Feeds is comprehensive; the level above does not exist and the level below (4, "minor gaps") understates it.

Completeness

The 'what' is explicit and rich (build/integrate/audit/upgrade/answer how-to questions with named components), and 'when' is present as equivalent trigger guidance — enumerated task scenarios ("Scaffold a new app, add Stream to an existing project, review an integration, upgrade an SDK major, migrate from Sendbird") plus an explicit scope boundary ("React Native and Expo only - web React uses stream-react"). It stops short of anchor 5 because there is no explicit "Use when..." phrasing with concrete trigger clauses; anchor 3 does not apply since the 'when' is more than weakly implied.

Trigger Term Quality

Natural user phrasing is thoroughly covered: product names users would say ("Stream Chat", "video calls", "livestreams", "audio rooms", "push notifications", "threads", "offline support"), migration source ("Sendbird"), and the ecosystem's equivalent of file extensions — exact npm package names. Anchor 5 (comprehensive natural terms including synonyms and package identifiers) is the closest match; anchor 4's "a few natural terms missing" does not fit — I could not identify a commonly used trigger term that is absent.

Distinctiveness Conflict Risk

The niche is precise (Stream Chat/Video/Feeds in React Native CLI and Expo apps) and it explicitly disambiguates from the nearest competing skill ("web React uses stream-react") and the deprecated @stream-io/chat-react-native-ai package. Distinct triggers (Stream, Sendbird migration, RN/Expo SDK names) give minimal conflict risk, matching anchor 5; anchor 4's "minor overlap risk" would apply only if a sibling skill boundary were left unstated.