nats

nats is a skill for Claude Code, Codex from ashish7802/awesome-api-skills. It costs 0 tokens per session (531 once invoked), scanned A, original, MIT.

A guide to NATS, a messaging system that lets services publish messages, request replies, and store messages for later delivery.

In plain words
What is it for?
Use it for service-to-service requests, event publishing, durable message streams, replaying messages, and load-balanced workers.
Why use it?
It helps separate services communicate without depending on direct REST calls and provides patterns for reconnecting or retrying failed messages.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for service-to-service requests, event publishing, durable message streams, replaying messages, and load-balanced workers.

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Install with agentmods
npx agentmods add skills/ashish7802/awesome-api-skills/nats
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.

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

Made for: Claude Code, Codex.

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 nats

README.md
[![agentmods](https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/nats/github.svg)](https://agentmods.dev/skills/ashish7802/awesome-api-skills/nats)
Your own site
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/nats"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/nats/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.

agentmods 80×15 button for nats

Your own site · 80×15
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/nats"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/nats.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 531 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00000 $0.00531
Opus 5 $0.00000 $0.00266
Sonnet 5 $0.00000 $0.00106
Haiku 4.5 $0.00000 $0.00053

Measured 10d ago against content hash 5845d40c6411, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nats 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 10d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/basic.py, examples/jetstream.ts, examples/pubsub.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/nats/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.

NATS API Skill

Quick Start

NATS is an extremely high-performance messaging system (Pub/Sub, Request/Reply, JetStream). Use the nats package for Node.js to communicate.

npm install nats

Common Workflows

JetStream Persistence

Standard NATS is ephemeral (fire-and-forget). For guaranteed delivery and message replay, use JetStream. Create a Stream, publish messages to it, and consume them using durable consumers.

Production Patterns

Request-Reply Architecture

Replace internal REST microservices with NATS Request-Reply. Service A sends a request to a subject orders.create; Service B processes it and replies on a unique inbox subject. This decouples services and enables load balancing automatically.

Error Recovery

NATS handles reconnections automatically. However, if a message publication to JetStream fails (e.g., NoResponders), catch the error and queue it locally or utilize an exponential backoff retry mechanism.

Security Notes

Use NATS Decentralized Auth (NKEYS). Never pass plaintext passwords. Issue scoped credentials to services, restricting which subjects they can publish or subscribe to.

Performance Considerations

NATS can process millions of messages per second. Avoid processing messages sequentially in tight loops; utilize asynchronous handlers to prevent blocking the Node.js event loop.

Testing Guidance

Spin up a local NATS server binary (nats-server) or Docker container in your CI/CD pipeline. It boots in milliseconds and consumes negligible RAM.

Troubleshooting

If consumers aren't receiving messages in a JetStream, verify that the subject they are listening to exactly matches the subjects bound to the underlying Stream configuration.

References

Why use this skill

Use this when your agent works with nats — structured patterns beat pasted docs and prevent common hallucinations.

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. 10d ago First seen · 59 lines · 0 tokens per session scan A 5845d40c6411

Subscribe to this mod's changes

nats is a skill published in the GitHub repository ashish7802/awesome-api-skills (13 stars, last pushed 9d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 531 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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