ellmos-clatcher-mcp

🇩🇪 Deutsche Version | 🛡️ Security Policy | 📝 Changelog | 📋 llms.txt

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.

[!NOTE] AI / LLM Integration Note: All destructive operations (e.g. batch_rename, cleanup_file, fix_json, fix_encoding, fix_umlauts) default to dry-run mode (dry_run: true). Autonomous agents must explicitly specify dry_run: false to execute mutations on disk.

System Architecture & Data Flow

graph TD
    Agent[AI Agent / Claude Code / Cursor / IDE] -->|MCP JSON-RPC Protocol over Stdio| Transport[MCP Stdio Transport Layer]
    Transport --> Server[Clatcher MCP Server Runtime]
    Server --> Dispatcher{Tool Dispatcher}

    Dispatcher -->|fix_json / cleanup_file| JsonEngine[JSON Linter & Auto-Fix Engine]
    Dispatcher -->|fix_encoding / fix_umlauts| EncodingEngine[Encoding Normalizer & Mojibake Resolver]
    Dispatcher -->|convert_format| FormatEngine[Format Converter: JSON/YAML/TOML/XML/CSV/INI]
    Dispatcher -->|detect_dupes / checksum| HashEngine[SHA-256 / Multi-Hash Content Engine]
    Dispatcher -->|folder_diff / batch_rename| FileOpsEngine[Folder Diff & Regex Batch Renamer]
    Dispatcher -->|archive / zip| ArchiveEngine[AdmZip Compression Handler]
    Dispatcher -->|scan_emoji / regex_test| RegexEngine[Emoji Scanner & Regex Debugger]

    JsonEngine --> DryRunGuard{Dry-Run Guard}
    EncodingEngine --> DryRunGuard
    FormatEngine --> DryRunGuard
    FileOpsEngine --> DryRunGuard
    ArchiveEngine --> DryRunGuard

    DryRunGuard -->|dry_run: true (default)| PreviewReport[Detailed Dry-Run Preview Diff & Status]
    DryRunGuard -->|dry_run: false (explicit)| DiskWrite[Safe Atomic Filesystem Write]

Part of the ellmos MCP family:

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

Discoverability

• npm: ellmos-clatcher-mcp
• GitHub: ellmos-ai/ellmos-clatcher-mcp
• MCP Registry metadata: server.json declares the official io.github.ellmos-ai/ellmos-clatcher-mcp package identity.
• Glama.ai Registry: glama.json manifest for Glama MCP ecosystem.
• LLM index: llms.txt summarizes the tool surface for agents and registry crawlers.

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

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

146 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 >= 20

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

AI Infrastructure

Desktop Software & Sibling Ecosystem

Our partner organization open-bricks and sister suites bundle AI-native applications and developer tooling:

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.