Content
81%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The body is a highly actionable, well-sequenced frontend auth guide: copy-paste v3 SDK code for every common flow, mandatory MCP pre-checks with exact tool actions, error-signature-driven recovery guidance, and a completion checklist. Its main weaknesses are token efficiency — the same three critical warnings are each repeated 3-4 times across sections — and a SKILL.md that carries detail which could be consolidated into the existing one-level-deep extended guide.
Suggestions
Deduplicate the three repeated warnings (getLoginState vs getSession, accessKey ≠ session, verifyOtp callback form): state each once in the gotchas section and reference it from elsewhere instead of restating full paragraphs in the parameter map, Quick Start comments, and cookbook.
Merge the two 'Prerequisites' statements (lines 58-59 under Overview and the later '## Prerequisites' section) into one section.
Collapse the 'Extended guide' and 'Reference index' sections into a single reference section, and consider moving the long 'Common mistakes' detail list into references/extended-guide.md to keep SKILL.md closer to an overview.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense with skill-specific gotchas and explains nothing Claude already knows, but the same three critical warnings are repeated 3-4 times each: the misleading getLoginState()/getSession() uid issue (gotchas, parameter map, Quick Start comment), accessKey-not-a-session (gotchas, parameter map, init comment, cookbook), and the verifyOtp callback form (gotchas, Supabase differences, parameter map, cookbook). Prerequisites are also stated twice (lines 58-59 and the '## Prerequisites' section). This matches anchor 3 (mostly efficient but could be tightened); not 2 because there is no padding or filler — only duplicated high-value warnings — and not 4 because the duplication is substantial rather than minor. | 3 / 5 |
Actionability | The cookbook provides copy-paste-ready, executable code for every common case — signInWithPassword, signUp + data.verifyOtp, signInWithOtp, resetPasswordForEmail + updateUser, getSession guard, onAuthStateChange, signOut — plus exact MCP calls with action parameters (queryAppAuth(action="listProviders"), manageAppAuth(action="ensurePublishableKey")) and specific error signatures to branch on ('messageId is required', gateway 401). This matches anchor 5: fully executable examples covering the common cases; not 4 because no significant gaps remain in the main flows. | 5 / 5 |
Workflow Clarity | The sequence is explicit and enforced: verify auth-tool provider setup first ('Do not start here first when... provider configuration has not been verified'), obtain and persist the publishable key, init the SDK, implement via the cookbook, then validate against the 'Completion Bar' checklist before declaring done. Error-recovery feedback loops are spelled out with concrete signatures (e.g. seeing 'messageId is required' means the callback form was skipped; empty publishable key → ensurePublishableKey first). This matches anchor 5 — explicit validation steps, feedback loops, and a checklist. | 5 / 5 |
Progressive Disclosure | Structure is good: a real one-level-deep bundle reference (references/extended-guide.md, 401 lines, exists, no nested references) is clearly signaled from both the 'Extended guide' and 'Reference index' sections, and sibling-skill paths are handled with an explicit missing-file fallback. Not anchor 5 because SKILL.md itself is a 229-line dense guide rather than a lean overview — the long 'Common mistakes' list and some duplicated parameter-map detail could live in the extended guide — and the reference link is duplicated across two sections. It stays above anchor 3 because the split that exists (login-method details in the reference) is appropriate and navigation is easy. | 4 / 5 |
Total | 17 / 20 Passed |