neon

A guide to Neon, a PostgreSQL database service that separates computing resources from stored data and supports isolated database branches. It includes the serverless driver used by applications running in environments such as Vercel Edge or Cloudflare Workers.

In plain words
What is it for?
Use it to connect Node.js applications to Neon, create temporary database branches for tests or previews, choose between normal pooling and WebSockets, and handle connection timeouts or duplicate-data errors.
Why use it?
It helps avoid too many database connections in short-lived serverless functions and makes safer preview databases possible. It also covers retries and common PostgreSQL errors.

Skill for Claude CodeCodex

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/ashish7802/awesome-api-skills/neon
Any agent
npx skills add ashish7802/awesome-api-skills --skill neon
Clone the repo
git clone --depth 1 https://github.com/ashish7802/awesome-api-skills

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 654 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 $0.00000 $0.00654
Opus 5 $0.00000 $0.00327
Sonnet 5 $0.00000 $0.00131
Haiku 4.5 $0.00000 $0.00065

Measured yesterday against content hash f07ecc52c497, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

neon 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 yesterday.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/basic.py, examples/basic.ts, examples/error-handling.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.

skills/neon/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Neon API Skill

Quick Start

Neon separates compute and storage, allowing instant database branching and autoscaling. For most Node.js applications, use the @neondatabase/serverless driver over standard pg to leverage WebSocket connections, which bypass serverless environment connection limits.

npm install @neondatabase/serverless

Common Workflows

Instant Branching

Neon allows you to create isolated database branches for preview environments. In Vercel or GitHub Actions, trigger the Neon API to branch your primary DB instantly before running integration tests, then delete the branch upon PR merge.

Production Patterns

Connection Pooling vs WebSockets

In traditional long-running servers (like Express on EC2), standard connection pooling with pg is acceptable. In Edge environments (Cloudflare Workers, Vercel Edge), always utilize the Neon WebSocket driver to eliminate connection exhaustion.

Error Recovery

Handle standard PostgreSQL error codes (e.g., 23505 for Unique Violation). If encountering connection timeouts (ETIMEDOUT) during cold starts in serverless functions, implement a retry wrapper using an exponential backoff strategy (e.g., async-retry package).

Security Notes

Never expose your raw Neon connection string in client-facing applications. Restrict database access by explicitly binding to static IP ranges where possible, though serverless environments may require 0.0.0.0/0 with strict password enforcement.

Performance Considerations

Neon's compute scales down to zero when inactive. The first query after scale-to-zero will experience a 'cold start' latency (typically 500ms-1s). To mitigate this for user-facing routes, implement keep-alive cron jobs or utilize read replicas for globally distributed edge applications.

Testing Guidance

Do not mock the database. Instead, integrate Neon API calls into your test setup phase to instantly provision an exact clone of your production schema, run tests against it, and destroy the branch in the teardown phase.

Read the full file on GitHub · 59 lines

Files

What ships with it

7 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. yesterday First seen · 59 lines · 0 tokens per session scan A f07ecc52c497

Subscribe to this mod's changes

neon is a skill published in the GitHub repository ashish7802/awesome-api-skills (13 stars, last pushed 13d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 654 tokens. 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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