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.
npx agentmods add skills/lukascivil/json-difference/nx-generatenpx skills add lukascivil/json-difference --skill nx-generategit clone --depth 1 https://github.com/lukascivil/json-differenceWhat 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 | $0.00080 | $0.01626 |
| Opus 5 | $0.00040 | $0.00813 |
| Sonnet 5 | $0.00016 | $0.00325 |
| Haiku 4.5 | $0.00008 | $0.00163 |
Grade A, and why
nx-generate 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 3d 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.
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.
This is a copy
97% identical to nx-generate — 2 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.
How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Run Nx Generator
Nx generators are powerful tools that scaffold projects, make automated code migrations or automate repetitive tasks in a monorepo. They ensure consistency across the codebase and reduce boilerplate work.
This skill applies when the user wants to:
- Create new projects like libraries or applications
- Scaffold features or boilerplate code
- Run workspace-specific or custom generators
- Do anything else that an nx generator exists for
Key Principles
- Always use
--no-interactive- Prevents prompts that would hang execution - Read the generator source code - The schema alone is not enough; understand what the generator actually does
- Match existing repo patterns - Study similar artifacts in the repo and follow their conventions
- Verify with lint/test/build/typecheck etc. - Generated code must pass verification. The listed targets are just an example, use what's appropriate for this workspace.
Steps
1. Discover Available Generators
Use the Nx CLI to discover available generators:
- List all generators for a plugin:
npx nx list @nx/react - View available plugins:
npx nx list
This includes plugin generators (e.g., @nx/react:library) and local workspace generators.
2. Match Generator to User Request
Identify which generator(s) could fulfill the user's needs. Consider what artifact type they want, which framework is relevant, and any specific generator names mentioned.
IMPORTANT: When both a local workspace generator and an external plugin generator could satisfy the request, always prefer the local workspace generator. Local generators are customized for the specific repo's patterns.
If no suitable generator exists, you can stop using this skill. However, the burden of proof is high—carefully consider all available generators before deciding none apply.
3. Get Generator Options
Use the --help flag to understand available options:
npx nx g @nx/react:library --help
Pay attention to required options, defaults that might need overriding, and options relevant to the user's request.
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.
- 3d ago First seen · 167 lines · 80 tokens per session scan A 291ab89f4189
nx-generate is a skill published in the GitHub repository lukascivil/json-difference (58 stars, last pushed 21d ago), licensed MIT. It adds 80 tokens to every session and 1,626 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to nx-generate, differing in 2 lines, and is treated as a copy.
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