patchloom/patchloom

Overview

patchloom is a Rust tool that provides structured file edits for AI agents. It supports JSON/YAML/TOML, markdown, and AST-based modifications, with dry-run and MCP integration. It is not a generic filesystem MCP server.

Best for

Best for
AI agent developers needing safe, structured edits to config and markup files

Use cases

• Apply schema-aware edits to JSON, YAML, or TOML files
• Modify markdown or AST nodes without regex text replacement
• Preview changes via dry-run before committing to files

How to use

Install

npx patchloom --version

Tools exposed

• mcp-server
• apply-fragment
• agent-rules

Tested with

Claude Code, Cursor, Windsurf, VS Code

Notes

patchloom is a Rust tool that provides structured file edits for AI agents. It supports JSON/YAML/TOML, markdown, and AST-based modifications, with dry-run and MCP integration. It is not a generic filesystem MCP server.

17 stars on GitHub. Last updated 2026-09-08. Licensed MIT.

Use cases

• Apply schema-aware edits to JSON, YAML, or TOML files
• Modify markdown or AST nodes without regex text replacement
• Preview changes via dry-run before committing to files

Pros

• Structured edits reduce syntax-breaking errors
• Dry-run mode allows safe preview of changes
• MCP integration fits agent-based workflows

Cons

• Limited community adoption (17 stars)
• Not a general-purpose filesystem MCP tool
• Narrower scope than generic file editing tools

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.