A guide to using Nx import to bring code from one Git repository or folder into an Nx workspace. An Nx workspace manages multiple related applications and libraries, often in a monorepo, which is one repository containing several projects.

Use it when adopting Nx, moving projects into a monorepo, or importing selected applications or libraries from another repository.

It explains how to combine repositories while preserving commit history and avoiding directory and configuration conflicts.

How lukascivil/json-difference configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to lukascivil/json-difference. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/lukascivil/json-difference/master/.github/skills/nx-import/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/lukascivil/json-difference

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/lukascivil/json-difference/nx-import/github.svg)](https://agentmods.dev/skills/lukascivil/json-difference/nx-import)

Your own site

<a href="https://agentmods.dev/skills/lukascivil/json-difference/nx-import"><img src="https://agentmods.dev/badge/skills/lukascivil/json-difference/nx-import/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/lukascivil/json-difference/nx-import"><img src="https://agentmods.dev/badge/skills/lukascivil/json-difference/nx-import.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,482 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00045	$0.03482
Opus 5.5	$0.00018	$0.01393
Sonnet 5.5	$0.00009	$0.00696
Haiku 4.5	$0.00005	$0.00348

Measured 1mo ago against content hash bc9a0fdfcf92, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

nx-import scanned grade C with 1 finding 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 1mo 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

**Fix**: `rm -rf imported/node_modules imported/pnpm-lock.yaml imported/pnpm-workspace.yaml imported/.gitignore`, then `pnpm install`.

Origin

This is a copy

100% identical to nx-import — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/skills/nx-import/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Quick Start

nx import brings code from a source repository or folder into the current workspace, preserving commit history.
After nx 22.6.0, nx import responds with .ndjson outputs and follow-up questions. For earlier versions, always run with --no-interactive and specify all flags directly.
Run nx import --help for available options.
Make sure the destination directory is empty before importing. EXAMPLE: target has libs/utils and libs/models; source has libs/ui and libs/data-access — you cannot import libs/ into libs/ directly. Import each source library individually.

Primary docs:

Read the nx docs if you have the tools for it.

Import Strategy

Subdirectory-at-a-time (nx import <source> apps --source=apps):

Recommended for monorepo sources — files land at top level, no redundant config
Caveats: multiple import commands (separate merge commits each); dest must not have conflicting directories; root configs (deps, plugins, targetDefaults) not imported
Directory conflicts: Import into alternate-named dir (e.g. imported-apps/), then rename

Whole repo (nx import <source> imported --source=.):

Only for non-monorepo sources (single-project repos)
For monorepos, creates messy nested config (imported/nx.json, imported/tsconfig.base.json, etc.)
If you must: keep imported tsconfig.base.json (projects extend it), prefix workspace globs and executor paths

Directory Conventions

Always prefer the destination's existing conventions. Source uses libs/but dest uses packages/? Import into packages/ (nx import <source> packages/foo --source=libs/foo).
If dest has no convention (empty workspace), ask the user.

Application vs Library Detection

Before importing, identify whether the source is an application or a library:

Applications: Deployable end products. Common indicators:
- Frontend: next.config.*, vite.config.* with a build entry point, framework-specific app scaffolding (CRA, Angular CLI app, etc.)
- Backend (Node.js): Express/Fastify/NestJS server entrypoint, no "exports" field in package.json
- JVM: Maven pom.xml with <packaging>jar</packaging> or <packaging>war</packaging> and a main class; Gradle application plugin or mainClass setting
- .NET: .csproj/.fsproj with <OutputType>Exe</OutputType> or <OutputType>WinExe</OutputType>
- General: Dockerfile, a runnable entrypoint, no public API surface intended for import by other projects
Libraries: Reusable packages consumed by other projects. Common indicators: "main"/"exports" in package.json, Maven/Gradle packaging as a library jar, .NET <OutputType>Library</OutputType>, named exports intended for import by other packages.

Read the full file on GitHub · 239 lines

Files

What ships with it

6 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.

1mo ago First seen · 239 lines · 45 tokens per session scan C bc9a0fdfcf92

Subscribe to this mod's changes

nx-import is a skill published in the GitHub repository lukascivil/json-difference (58 stars, last pushed 2mo ago), licensed MIT. It adds 45 tokens to every session and 3,482 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). It is 100% identical to nx-import, differing in 0 lines, and is treated as a copy.

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json-difference: Skill for Claude Code