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 neondatabase/ai-rules --skill neon-jsgit clone --depth 1 https://github.com/neondatabase/ai-rulesWrote 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/neondatabase/ai-rules/neon-js)<a href="https://agentmods.dev/skills/neondatabase/ai-rules/neon-js"><img src="https://agentmods.dev/badge/skills/neondatabase/ai-rules/neon-js/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/neondatabase/ai-rules/neon-js"><img src="https://agentmods.dev/badge/skills/neondatabase/ai-rules/neon-js.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00049 | $0.01254 |
| Opus 5 | $0.00024 | $0.00627 |
| Sonnet 5 | $0.00010 | $0.00251 |
| Haiku 4.5 | $0.00005 | $0.00125 |
Grade A, and why
neon-js 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 9d 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 — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Neon JS SDK Integration
Set up the unified Neon JS SDK for authentication and database queries in one package.
When to Use This Skill
- Building apps that need both auth and database queries
- Migrating from Supabase to Neon
- Using PostgREST-style API for database access
- Need type-safe database queries with generated types
Package: @neondatabase/neon-js (full SDK with auth + data API)
Need auth only? Use the neon-auth skill instead for @neondatabase/auth with a smaller bundle.
Code Generation Rules
When generating TypeScript/JavaScript code, follow these rules:
Complete reference: See Code Generation Rules for:
- Import path handling (path aliases vs relative imports)
- Neon package imports (subpath exports, adapter patterns)
- CSS import strategy (Tailwind detection, single import method)
- File structure patterns
Key points:
- Check
tsconfig.jsonfor path aliases before generating imports - Use relative imports if unsure or no aliases exist
BetterAuthReactAdapterMUST be imported fromauth/react/adapterssubpath- Adapters are factory functions - call them with
() - Choose ONE CSS import method (Tailwind or CSS, not both)
Available Guides
Each guide is a complete, self-contained walkthrough with numbered phases:
guides/setup.md- Complete setup guide for Next.js with auth + data API
I'll automatically detect your context (package manager, framework, existing setup) and select the appropriate guide based on your request.
For troubleshooting, see the Troubleshooting Guide in references.
Quick Examples
Tell me what you're building - I'll handle the rest:
- "Set up Neon JS for my Next.js app" -> Loads full stack guide, configures auth + data
- "Add database queries to my auth setup" -> Configures data API client
- "Migrate from Supabase" -> Uses SupabaseAuthAdapter for compatibility
What ships with it
2 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.
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.
- 9d ago First seen · 112 lines · 49 tokens per session scan A b328c175ef63
neon-js is a skill published in the GitHub repository neondatabase/ai-rules (86 stars, last pushed 3mo ago), licensed MIT. It adds 49 tokens to every session and 1,254 once invoked, about $0.0002 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 2026-08-30.
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