Json Modifier

基于 Node 的命令行工具，按 RFC 6902 JSON Patch 对 JSON 文件执行 add、remove、replace、move、copy、test 等操作；支持内联 patch 字符串或 patch 文件，可原地修改或写入新文件，应用前校验、原子写入并默认保留两空格缩进。

wanng-ide

热度 67.67

最近更新 2026-05-17 12:06:49

分类：效率依赖：代码执行 / 读写文件应用场景：数据处理 / 自动化脚本 / 工作流

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add json-modifier

Metadata

name: json-modifier
description: Safely apply structured JSON patches (RFC 6902) to files. Use this skill when you need to update configuration files, package.json, or memory JSONs without rewriting the whole file or using brittle regex.

JSON Modifier

A utility for modifying JSON files using RFC 6902 JSON Patch format. Supports precise additions, removals, replacements, moves, copies, and tests.

Usage

# Modify a file in place
node skills/json-modifier/index.js --file path/to/config.json --patch '[{"op": "replace", "path": "/key", "value": "new_value"}]'

# Modify and save to a new file
node skills/json-modifier/index.js --file input.json --patch '[...]' --out output.json

# Use a patch file
node skills/json-modifier/index.js --file input.json --patch-file patches/update.json

Patch Format (RFC 6902)

The patch must be a JSON array of operation objects.

Examples

Replace a value:

[
  { "op": "replace", "path": "/version", "value": "2.0.0" }
]

Add a new key:

[
  { "op": "add", "path": "/features/new_feature", "value": true }
]

Remove a key:

[
  { "op": "remove", "path": "/deprecated_key" }
]

Append to an array:

[
  { "op": "add", "path": "/list/-", "value": "item" }
]

Safety

Validates patch against document before applying.
Atomic write (writes to temporary file, then renames).
Preserves indentation (default: 2 spaces).