---
title: "Nock HTTP Server Mocking and Expectations Library for Node.js"
description: "Nock is an HTTP server mocking and expectations library for Node.js that intercepts outgoing HTTP requests and provides programmable responses. With over 13,000 GitHub stars and 5.5 million weekly npm downloads, it is one of the most widely used testing utilities in the JavaScript ecosystem."
verification: "security_reviewed"
source: "https://github.com/nock/nock"
category:
  - "Code Quality & Review"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "nock/nock"
  github_stars: 13101
---

# Nock HTTP Server Mocking and Expectations Library for Node.js

Nock is an HTTP server mocking and expectations library for Node.js that intercepts outgoing HTTP requests and provides programmable responses. With over 13,000 GitHub stars and 5.5 million weekly npm downloads, it is one of the most widely used testing utilities in the JavaScript ecosystem.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/nock-http-server-mocking-nodejs/)