# JSON Splitter and Merger

> Use this tool when you need to manipulate large JSON files, splitting them into smaller chunks or merging multiple files into one for efficient data processing and analysis. It solves problems of data fragmentation and consolidation, taking JSON files or directories as input and producing smaller or merged JSON files as output. Ideal for use in data processing workflows involving large JSON datasets that require breakdown or consolidation for further analysis.

Canonical page: https://skillsregistry.net/skills/vadim-json-splitter-merger  
JSON: https://api.skillsregistry.net/v1/skills/vadim-json-splitter-merger

## Description

The JSON MCP Server provides tools for efficient JSON file manipulation, allowing AI assistants to split large JSON files into smaller chunks and merge multiple JSON files into a single consolidated file. Developed by Vadym Nastoiashchyi, this TypeScript implementation uses the Model Context Protocol SDK to expose two primary tools: 'split' for dividing JSON arrays into specified sizes while preventing excessive fragmentation, and 'merge' for combining multiple JSON files from a directory into a single output file. The server includes robust path validation, home directory expansion, and error handling to ensure reliable operation across different environments. It's particularly valuable for data processing workflows that involve large JSON datasets that need to be broken down for processing or consolidated for analysis.

## Trust

- **Trust score (0–1):** 0.64
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** file-system
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/vadim-json-splitter-merger)
- **Repository:** <https://github.com/vadimnastoyashchy/json-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "vadim-json-splitter-merger"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/vadim-json-splitter-merger` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/vadim-json-splitter-merger/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt