BACH CodeCommander

ellmos CodeCommander MCP Server

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The README navigation lists the available documentation languages. Section 11 separately describes the runtime languages used for tool output messages and diagnostics. This does not claim that MCP discovery or schema descriptions, the GUI, CLI, or API are translated.

*Part of the ellmos-ai family.*

[!NOTE]

For AI Assistants & LLMs: Machine-readable indexing documentation for this repository is available at llms.txt. The server exposes 23 specialized tools under the cc_ prefix.

A developer-focused Model Context Protocol (MCP) server that gives AI assistants code analysis, structural Python editing, JSON repair, encoding fix, import organization, format conversion, file diff, and regex testing capabilities.

23 tools optimized for developers - the coding companion to FileCommander.

Discoverability: Published on npm as ellmos-codecommander-mcp, visible on Glama, and prepared for the official MCP Registry with server.json under io.github.ellmos-ai/ellmos-codecommander-mcp. Registry and directory manifests server.json, glama.json, smithery.yaml, and llms.txt are maintained in full parity.

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Quick Navigation

1. Overview & Highlights
2. Target Personas & Discoverability
3. Comparative Matrix vs. Alternatives
4. Architecture & System Overview
5. Safe Structural Edit Lifecycle
6. Governance & Runtime Invariants
7. Developer Tool Suite (23 Tools)
8. Shared Tools with FileCommander
9. Installation & Quickstart
10. Configuration & MCP Client Setup
11. Multi-Language Support (i18n)
12. Development & Quality Assurance
13. Sibling Ecosystem & Partner Matrix
14. Third-Party Licenses & Transparency
15. Security Policy & Response SLA
16. Changelog & Version History
17. License & Legal Attribution
18. Statutory Notice, Liability Limitation & SLA (§ 521 BGB)

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1. Overview & Highlights

While FileCommander handles filesystem operations and system processes, CodeCommander focuses specifically on code intelligence and developer precision:

• Python, JavaScript & TypeScript Analysis — Extension-dispatched classes, methods, functions, complexity metrics, and import analysis; JS/TS analysis is regex-based and read-only.
• BACH-derived Python Helpers — Runtime import diagnostics, structural edits, indentation checks, and template-based code generation.
• Explicit Language Gates — Python-only path tools reject non-.py files explicitly instead of producing Python-shaped false findings.
• JSON Repair & Validation — Automatically repair broken JSON (trailing commas, single quotes, BOM, comments) with precise error locations.
• PEP 8 Import Organization — Sort and deduplicate Python imports per PEP 8 guidelines.
• Encoding & Mojibake Repair — Fix Mojibake and double-encoded UTF-8 (27+ patterns) and broken German characters (70+ umlaut patterns).
• Universal Format Conversion — Convert between JSON, CSV, INI, YAML, TOML, XML, and TOON formats losslessly.
• Unified File Diff — Compare two files with LCS unified diff output and configurable context lines.
• Regex Testing Workbench — Test regular expressions with match details, capturing groups, and replace previews.
• Markdown Export — Convert Markdown to standalone HTML or PDF with syntax-styled code blocks, tables, and blockquotes.
• Cross-Platform Native — Full support on Windows, macOS, and Linux.

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2. Target Personas & Discoverability

CodeCommander MCP is engineered to address key bottlenecks in modern autonomous AI coding, local multi-agent swarms, and safety-compliant developer tooling:

Target Audience & Stakeholder Personas

• `[PERSONA-01]` (`[PERSONA-1]`) Autonomous AI Coding Agents & LLM Pair-Programmers
• Profile: Agents such as Claude Code, Antigravity, Codex, Cursor, and Windsurf performing automated code refactoring, test repair, and feature development.
• Pain Point: Standard LLM code outputs frequently suffer from hallucinated imports, broken indentation in complex Python control flows, invalid JSON configs, or syntax corruption during naive chunk edits.
• Solution: Native AST extraction (cc_extract_classes, cc_analyze_methods), preview-safe structural editing with unified diffs (cc_python_structural_edit), automatic indentation checking (cc_check_indentation), and deterministic JSON repair (cc_fix_json).

• `[PERSONA-02]` (`[PERSONA-2]`) Full-Stack & Python/TypeScript Software Engineers
• Profile: Developers maintaining polyglot projects, CLI utilities, and data pipelines requiring cross-language AST analysis and rapid configuration format transitions.
• Pain Point: Tedious manual format conversions (JSON ↔ YAML ↔ TOML ↔ TOON ↔ XML), broken German umlauts or Mojibake from legacy encodings, and circular runtime imports.
• Solution: Universal format converter (cc_convert_format), non-destructive encoding and umlaut repair (cc_fix_encoding, cc_fix_umlauts), isolated runtime import diagnostics (cc_runtime_import_diagnose), and interactive regex tester (cc_regex_test).

• `[PERSONA-03]` (`[PERSONA-3]`) Enterprise AI Safety, SecOps & Code Governance Officers
• Profile: Security auditors, compliance engineers, and enterprise architects evaluating MCP toolchains for developer workstations and CI/CD runners.
• Pain Point: Risk of confidential code leakage via cloud telemetry, unauthorized process elevation, or destructive in-place file overwrites by AI assistants.
• Solution: 100% Zero-Egress local stdio transport (INV-LOCAL-01), unprivileged user-space execution (INV-SEC-02), mandatory timestamped .bak backups before mutations (INV-BAK-04), dry-run diff preview safety (INV-PREV-03), and isolated subprocess timeouts (INV-ISOL-05).

• `[PERSONA-04]` (`[PERSONA-4]`) Open-Source Ecosystem Architects & MCP Tool Developers
• Profile: Maintainers building, publishing, and indexing MCP servers across Glama, Smithery, npm, and GitHub.
• Pain Point: Fragmented directory manifests, missing third-party license disclosures, and lack of machine-readable indexing context for AI agents.
• Solution: 100% manifest parity across package.json, server.json, glama.json, smithery.yaml, and llms.txt, verified by automated contract tests and a complete open-source license audit (THIRD_PARTY_LICENSES.md).

High-Intent Search Queries (SEO & Discoverability)

• mcp code analysis server
• model context protocol python ast tools
• mcp server codecommander
• python structural edit mcp
• claude code developer mcp server
• mcp json repair and encoding fix
• local-first mcp tools for coding
• mcp python runtime import diagnose
• format converter mcp json yaml toml toon
• offline code intelligence mcp server

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3. Comparative Matrix vs. Alternatives

The following matrix compares CodeCommander MCP against alternative developer tooling approaches across 10 critical operational dimensions:

| 9. Multi-Language (i18n) Support | English