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ellmos-clatcher-mcp

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ellmos-clatcher-mcp

🇩🇪 Deutsche Version

npm version License: MIT Node.js Clatcher tests MCP Registry Ready

Claude Patcher -- an MCP server that extends AI coding agents with utility tools they don't have natively. File repair, format conversion, duplicate detection, batch operations, and more.

Use Clatcher when your agent needs reliable local maintenance tools for text files, data files, and project folders: repair invalid JSON, normalize encodings, convert formats, compare folders, rename files safely, and verify checksums without leaving the MCP workflow.

Part of the ellmos MCP family:

Server

Focus

npm

ellmos-filecommander-mcp

Filesystem operations, process management, interactive sessions

ellmos-filecommander-mcp

ellmos-codecommander-mcp

Code analysis, AST parsing, import management

ellmos-codecommander-mcp

ellmos-clatcher-mcp

Utility tools: repair, convert, detect, batch ops

ellmos-clatcher-mcp

n8n-manager-mcp

n8n workflow management via AI assistants

n8n-manager-mcp

ellmos-controlcenter-mcp

MCP stack discovery, profile management, control plane

ellmos-controlcenter-mcp

ellmos-homebase-mcp

LLM memory, knowledge, state, routing, and orchestration

ellmos-homebase-mcp (alpha)

ellmos-servercommander-mcp

Server operations: deploy dry-runs, mail status, log analysis, health checks

ellmos-servercommander-mcp (alpha)

Each server covers a different domain. Use one server, a focused pair, or the full family depending on your workflow.

Discoverability

Primary search terms: ellmos-clatcher-mcp, clatcher mcp, claude patcher, mcp json repair server, mcp encoding fix, model context protocol file repair, claude code utility tools, format conversion mcp tool, duplicate file detection mcp, batch rename mcp, checksum mcp, zip archive mcp.

Tools

Tool

Description

fix_json

Repair broken JSON: strip comments, trailing commas, single quotes, BOM/NUL

fix_encoding

Fix encoding issues: BOM removal, double-encoded UTF-8, cp1252 artifacts

fix_umlauts

Fix broken German umlauts from double-encoding (e.g. ä -> ä)

convert_format

Convert between JSON, YAML, TOML, XML, CSV, and INI

detect_dupes

Find duplicate files by content hash (SHA256), grouped by identical content

folder_diff

Compare two directories, or take a snapshot and diff on next call

batch_rename

Rename files using regex patterns, with dry-run preview

archive

Create, extract, or list ZIP archives

checksum

Calculate file hashes (SHA256, MD5, SHA1, SHA512) with optional verification

cleanup_file

Remove BOM, trailing whitespace, fix line endings, strip NUL bytes

scan_emoji

Find emoji characters in code files

regex_test

Test regex patterns against text, showing all matches with groups

All destructive tools default to dry-run mode and require explicit dry_run: false to write changes.

Installation

Claude Code CLI

claude mcp add ellmos-clatcher-mcp -- npx ellmos-clatcher-mcp

npm (global)

npm install -g ellmos-clatcher-mcp
claude mcp add ellmos-clatcher-mcp -- ellmos-clatcher

From source

git clone https://github.com/ellmos-ai/ellmos-clatcher-mcp.git
cd ellmos-clatcher-mcp
npm install
npm run build
node dist/index.js

Testing

npm test

141 tests covering all 12 tools, i18n language packs, repository hygiene, and metadata consistency (vitest). The GitHub Actions workflow runs npm ci, TypeScript build, Vitest, and an npm package dry-run on Node.js 20, 22, and 24.

Requirements

  • Node.js >= 18

License

MIT


ellmos-ai Ecosystem

This MCP server is part of the ellmos-ai ecosystem — AI infrastructure, MCP servers, and intelligent tools.

MCP Server Family

Server

Tools

Focus

npm

FileCommander

44

Filesystem, process management, interactive sessions

ellmos-filecommander-mcp

CodeCommander

21

Code analysis, AST parsing, import management

ellmos-codecommander-mcp

Clatcher

12

File repair, format conversion, batch operations

ellmos-clatcher-mcp

n8n Manager

18

n8n workflow management via AI assistants

n8n-manager-mcp

ControlCenter

10

MCP stack discovery, profile management, control plane

ellmos-controlcenter-mcp

Homebase

44

LLM memory, knowledge, state, routing, and orchestration

ellmos-homebase-mcp (alpha)

ServerCommander

8

Server operations: deploy dry-runs, mail, log analysis, health checks

ellmos-servercommander-mcp (alpha)

AI Infrastructure

Project

Description

BACH

Text-based OS for LLMs — 113+ handlers, 550+ tools, 1870+ skills

clutch

Provider-neutral LLM orchestration with auto-routing and budget tracking

rinnsal

Lightweight agent memory, connectors, and automation infrastructure

ellmos-stack

Self-hosted AI research stack (Ollama + n8n + Rinnsal + KnowledgeDigest)

MarbleRun

Autonomous agent chain framework for Claude Code

gardener

Minimalist database-driven LLM OS prototype (4 functions, 1 table)

ellmos-tests

Testing framework for LLM operating systems (7 dimensions)

Desktop Software

Our partner organization open-bricks bundles AI-native desktop applications — a modern, open-source software suite built for the age of AI. Categories include file management, document tools, developer utilities, and more.


Haftung / Liability

Dieses Projekt ist eine unentgeltliche Open-Source-Schenkung im Sinne der §§ 516 ff. BGB. Die Haftung des Urhebers ist gemäß § 521 BGB auf Vorsatz und grobe Fahrlässigkeit beschränkt. Ergänzend gilt der Gewährleistungsausschluss der MIT-Lizenz.

Nutzung auf eigenes Risiko. Keine Wartungszusage, keine Verfügbarkeitsgarantie, keine Gewähr für Fehlerfreiheit oder Eignung für einen bestimmten Zweck.

This project is an unpaid open-source donation under German law. Liability is limited to intent and gross negligence (§ 521 German Civil Code). The MIT License warranty disclaimer applies.

Use at your own risk. No warranty, no maintenance guarantee, no availability guarantee, and no fitness-for-purpose assumed.

Install Server
A
license - permissive license
B
quality
B
maintenance

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

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