Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add pproenca/dot-skills --skill better-auth-scaffoldgit clone --depth 1 https://github.com/pproenca/dot-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/pproenca/dot-skills/better-auth-scaffold)<a href="https://agentmods.dev/skills/pproenca/dot-skills/better-auth-scaffold"><img src="https://agentmods.dev/badge/skills/pproenca/dot-skills/better-auth-scaffold.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 75 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 76 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 77 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00144 | $0.01593 |
| Opus 5 | $0.00072 | $0.00796 |
| Sonnet 5 | $0.00029 | $0.00319 |
| Haiku 4.5 | $0.00014 | $0.00159 |
Grade A, and why
better-auth-scaffold scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Better Auth Scaffold (Next.js + Drizzle)
Parameterized templates for bootstrapping a Better Auth setup in a Next.js App Router project using the Drizzle adapter. Each template enforces the conventions documented in references/conventions.md — file layout, plugin ordering, env handling, runtime selection.
When to Apply
Reference these templates when:
- Starting a new Next.js project that needs authentication
- Adding Better Auth to an existing Next.js + Drizzle codebase
- Refactoring a partial Better Auth setup that's missing the catch-all route, middleware, or
nextCookies()ordering - Generating a per-feature variant (minimal, social, advanced) on top of an existing project
Setup
Required parameters
| Parameter | Required | Default | Description |
|---|---|---|---|
preset |
no | minimal |
minimal (email+password) | social (adds Google + GitHub) | advanced (social + twoFactor + magicLink) |
db_provider |
yes | — | pg | mysql | sqlite (Drizzle provider) |
app_name |
yes | — | Display name (becomes 2FA issuer in authenticator apps when preset=advanced) |
Optional parameters
| Parameter | Default | Description |
|---|---|---|
auth_path |
lib/auth.ts |
Server auth module path |
client_path |
lib/auth-client.ts |
Client module path |
api_route_path |
app/api/auth/[...all]/route.ts |
Catch-all route handler path |
protected_paths |
["/dashboard"] |
Routes the middleware guards |
If config.json already exists with values, the skill uses those; otherwise it asks the user.
Available Templates
| Template | Output File | When to emit |
|---|---|---|
auth.ts.template |
lib/auth.ts |
Always |
auth-client.ts.template |
lib/auth-client.ts |
Always |
route.ts.template |
app/api/auth/[...all]/route.ts |
Always |
middleware.ts.template |
middleware.ts |
When protected_paths is non-empty |
env.template |
.env.example |
Always |
db-schema-better-auth.ts.template |
db/schema/auth.ts |
Always (stub — replace with output of better-auth generate) |
db-index.ts.template |
db/index.ts |
When the project has no Drizzle client yet |
email.ts.template |
lib/email.ts |
When preset=advanced (and the file doesn't already exist) |
sign-in-page.tsx.template |
app/sign-in/page.tsx |
When the project has no sign-in page (closes the middleware redirect loop) |
permissions.ts.template |
lib/permissions.ts |
Optional starter for org/admin plugin work |
What ships with it
14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/templates/auth-client.ts.template 1.2 KB
- assets/templates/auth.ts.template 3.8 KB
- assets/templates/db-index.ts.template 1.9 KB
- assets/templates/db-schema-better-auth.ts.template 4.5 KB
- assets/templates/email.ts.template 1.7 KB
- assets/templates/env.template 1.6 KB
- assets/templates/middleware.ts.template 1.5 KB
- assets/templates/permissions.ts.template 1.9 KB
- assets/templates/route.ts.template 706 B
- assets/templates/sign-in-page.tsx.template 3.0 KB
- config.json 1.2 KB
- gotchas.md 220 B
- metadata.json 1.3 KB
- references/conventions.md 7.3 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 104 lines · 144 tokens per session scan A 39ae6a14b4d3
better-auth-scaffold is a skill published in the GitHub repository pproenca/dot-skills (203 stars, last pushed 23d ago), licensed MIT. It adds 144 tokens to every session and 1,593 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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