This is a strong skill description that clearly articulates specific capabilities around Realtime channel security with RLS, Presence, and Broadcast. It includes an explicit 'Use when' clause with relevant trigger terms and occupies a distinct niche that minimizes conflict with other skills. The description is concise, uses third person voice, and provides enough detail for accurate skill selection.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions: configures private Realtime channels, RLS-backed authorization on realtime.messages table, enforces tenant-scoped Presence and Broadcast security. These are concrete, specific capabilities.	3 / 3
Completeness	Clearly answers both 'what' (configures private Realtime channels with RLS-backed authorization, enforces tenant-scoped Presence and Broadcast security) and 'when' (explicit 'Use when' clause listing five trigger scenarios).	3 / 3
Trigger Term Quality	Includes strong natural keywords users would say: 'private realtime channels', 'realtime authorization', 'presence security', 'broadcast security', 'realtime messages table', 'RLS'. These cover the main variations a user working with Supabase Realtime security would use.	3 / 3
Distinctiveness Conflict Risk	Highly distinctive niche focused specifically on Realtime channel authorization with RLS, Presence, and Broadcast security. Unlikely to conflict with general database, auth, or other realtime skills due to the specific focus on private channels and the realtime.messages table.	3 / 3
	Total	12 / 12 Passed

Implementation

92%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is a high-quality skill that provides clear, actionable, and well-sequenced guidance for configuring private Realtime channels with RLS-backed authorization. The SQL and TypeScript examples are executable and specific, the workflow includes explicit halt conditions and a thorough verification phase, and the content respects Claude's intelligence by avoiding unnecessary explanations. The only minor weakness is that references to dependent tiles lack direct links.

Dimension	Reasoning	Score
Conciseness	The content is lean and efficient. It assumes Claude knows what RLS, JWT claims, Supabase channels, and Presence/Broadcast are. Every section delivers actionable information without padding or unnecessary explanation.	3 / 3
Actionability	Provides fully executable SQL statements and TypeScript code snippets that are copy-paste ready. Specific policy names, column references, and client configuration options are all concrete and directly usable.	3 / 3
Workflow Clarity	Clear 5-phase sequence with explicit HALT conditions on failure (Phase 2 step 4, Phase 5 step 3), a dedicated verification report phase with positive and negative test cases, and logical dependencies between phases. The workflow handles destructive/security-critical operations with appropriate validation checkpoints.	3 / 3
Progressive Disclosure	The content is well-structured with clear phases and sections, but it references external tiles (supabase-mcp-verification, tenant-isolation-rls) without linking to them. For a skill of this length (~80 lines of substantive content), some of the verification steps or the channel naming convention documentation could be split out. However, the inline content is reasonably sized.	2 / 3
	Total	11 / 12 Passed

Validation

100%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 11 / 11 Passed

Validation for skill structure

No warnings or errors.

Reviewed

3 days ago

Table of Contents

Discovery Implementation Validation