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BF better-auth

Complete Better Auth documentation in markdown format. Use when implementing authentication in TypeScript projects - covers OAuth providers (Google, GitHub, etc.), email/password, passkeys, 2FA, session management, database adapters (Prisma, Drizzle), and framework integrations (Next.js, SvelteKit, etc.).

modbender/skill-library-mcp Agent Skills author: modbender MIT 80 files body ≈ 1 026 tokens Open the sourcegithub.com↗ analyzed 2 d ago

Complete Better Auth documentation in markdown format.

As a process F 26/100 · Will not run — References files that are not bundled: references/introduction.mdx, references/plugins/, references/reference/

IntegrationGitHubWriting and documentstype and topics are labelled automatically from the skill text
Runs in: OpenClaw Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) Goose OpenCode
JSON
Technical rating
B
89/100
safety, quality, tests
Safety 60%
100
Quality 40%
72
Run on models
none yet
Process rating
F
26/100
Will not run
References files that are not bundled: references/introduction.mdx, references/plugins/, references/reference/
Tools and files w 18
0
Result and completion w 14
0
Inputs and preconditions w 11
0
the three weakest of ten parameters · all ten

How to improve

  1. The text references files that are not there: add them or drop the references.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 0

✓ No critical or high findings

Files scanned: 2. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning missing-ref reference to a missing file: references/introduction.mdx
  • warning missing-ref reference to a missing file: references/plugins/
  • warning missing-ref reference to a missing file: references/reference/
  • warning missing-ref reference to a missing file: references/concepts/session.mdx
  • warning missing-ref reference to a missing file: references/plugins/two-factor.mdx
  • warning missing-ref reference to a missing file: references/plugins/passkey.mdx
  • warning missing-ref reference to a missing file: references/integrations/next-js.mdx
  • warning missing-ref reference to a missing file: references/plugins/organization.mdx

Process rating: all ten parameters 26/100

Will not run. References files that are not bundled: references/introduction.mdx, references/plugins/, references/reference/
  • 0Tools and files. 8 referenced file(s) missing: references/introduction.mdx, references/plugins/, references/reference/
  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Failures and branches. Linear process with no failure handling
  • 0Progress reporting. Says nothing while it works
  • 20When it triggers. No condition that starts the skill
  • 30Running it twice. 2 mutating operations with no state check
  • 40Consistency. Frontmatter name (better-auth) differs from the folder (lb-better-auth-skill)
  • 85Steps. 52 steps, 3 vague phrases
  • 100Execution cost. Instruction body is 1026 tokens

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Output format is not stated: the model decides each time
  • +1No license
  • +2Single-language instructions
  • +3Description length 306: enough signal without eating the budget
  • +4Structure: 16 headings
  • +3Step-by-step instructions: 52 items
  • +4Has examples (0 code blocks)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 72.