neon-serverless

neon-serverless is a skill for Claude Code from neondatabase/ai-rules. It costs 103 tokens per session (714 once invoked), scanned A, original, MIT.

A setup guide for connecting Next.js and other serverless applications to Neon PostgreSQL through Neon's serverless driver. Serverless applications run code on demand, including at edge locations close to users.

In plain words
What is it for?
Setting up Neon in Vercel Edge Functions, Cloudflare Workers, AWS Lambda, Google Cloud Functions, and other serverless environments.
Why use it?
It removes much of the configuration work for database connections in edge functions and serverless APIs, including environment variables and typed examples.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: positional $N argument.

Part of the neon-plugin plugin — 6 skills, 1 MCP server shipped together

Install

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.

agentmods
npx agentmods add skills/neondatabase/ai-rules/neon-serverless
Any agent
npx skills add neondatabase/ai-rules --skill neon-serverless
Clone the repo
git clone --depth 1 https://github.com/neondatabase/ai-rules

Made for: Claude Code.

Or install neon-plugin, the plugin that ships this one along with the rest of its 6 skills, 1 MCP server.

Wrote 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.

agentmods badge for neon-serverless

README.md
[![agentmods](https://agentmods.dev/badge/skills/neondatabase/ai-rules/neon-serverless.svg)](https://agentmods.dev/skills/neondatabase/ai-rules/neon-serverless)
Your own site
<a href="https://agentmods.dev/skills/neondatabase/ai-rules/neon-serverless"><img src="https://agentmods.dev/badge/skills/neondatabase/ai-rules/neon-serverless.svg" alt="Measured on agentmods" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 714 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00103 $0.00714
Opus 5 $0.00051 $0.00357
Sonnet 5 $0.00021 $0.00143
Haiku 4.5 $0.00010 $0.00071

Measured 6d ago against content hash 570e10fb0d8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

neon-serverless 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 6d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/validate-connection.ts, templates/http-connection.ts, templates/websocket-pool.ts), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

neon-plugin/skills/neon-serverless/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Neon Serverless Skill

Configures the Neon Serverless Driver for optimal performance in serverless and edge computing environments.

When to Use

  • Setting up connections for edge functions (Vercel Edge, Cloudflare Workers)
  • Configuring serverless APIs (AWS Lambda, Google Cloud Functions)
  • Optimizing for low-latency database access
  • Implementing connection pooling for high-throughput apps

Not recommended for: Complex multi-statement transactions (use WebSocket Pool), persistent servers (use native PostgreSQL drivers), or offline-first applications.

Code Generation Rules

When generating TypeScript/JavaScript code:

  • BEFORE generating import statements, check tsconfig.json for path aliases (compilerOptions.paths)
  • If path aliases exist (e.g., "@/": ["./src/"]), use them (e.g., import { x } from '@/lib/utils')
  • If NO path aliases exist or unsure, ALWAYS use relative imports (e.g., import { x } from '../../../lib/utils')
  • Verify imports match the project's configuration
  • Default to relative imports - they always work regardless of configuration

Reference Documentation

Primary Resource: See [neon-serverless.mdc](https://raw.githubusercontent.com/neondatabase-labs/ai-rules/main/neon-serverless.mdc) in project root for comprehensive guidelines including:

  • Installation and compatibility requirements
  • HTTP vs WebSocket adapter selection
  • Connection pooling strategies
  • Query optimization patterns
  • Error handling and troubleshooting

Quick Setup

Installation

npm install @neondatabase/serverless

Connection Patterns

HTTP Client (recommended for edge/serverless):

import { neon } from '@neondatabase/serverless';
const sql = neon(process.env.DATABASE_URL!);
const rows = await sql`SELECT * FROM users WHERE id = ${userId}`;

WebSocket Pool (for Node.js long-lived connections):

import { Pool } from '@neondatabase/serverless';
const pool = new Pool({ connectionString: process.env.DATABASE_URL! });
const result = await pool.query('SELECT * FROM users WHERE id = $1', [userId]);

Read the full file on GitHub · 79 lines

Files

What ships with it

3 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.

Changes

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.

  1. 6d ago First seen · 79 lines · 103 tokens per session scan A 570e10fb0d8d

Subscribe to this mod's changes

neon-serverless is a skill published in the GitHub repository neondatabase/ai-rules (86 stars, last pushed 3mo ago), licensed MIT. It adds 103 tokens to every session and 714 once invoked, about $0.0005 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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