RimSage — RimWorld Source MCP Server

by realloon

An MCP server that provides RimWorld source code search and browsing capabilities. Requires local RimWorld files and a decompiled C# project for building the index, paths configured manually by the user.

Developer toolsstdioCommunity

Repository-wide counts · Cached 2026-04-05

Overview

The RimSage — RimWorld Source MCP Server MCP server is a publicly available project. Review the upstream repository for installation instructions, supported tools, compatibility, permissions, and current maintenance status.

Configuration

Configuration, transport, authentication, and runtime requirements vary by project. Open the repository before connecting and use the smallest set of credentials and permissions required.

Open the RimSage — RimWorld Source MCP Server repository to read the latest documentation.

KEEP EXPLORING

Compare source, connection, and authentication details before choosing an implementation.

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FROM THE SOURCE

Repository README

Build-time snapshot · Retrieved 2026-10-05

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RimSage

MCP Server bun ripgrep

An MCP server that provides RimWorld source code search and browsing capabilities.

Available Tools

The server provides these tools:

  • search_source - Search RimWorld source code
  • read_file - Read specific files
  • list_directory - List directory contents
  • search_defs - Search through RimWorld Defs
  • get_def_details - Get raw or merged RimWorld Def XML
  • read_csharp_symbol - Read a C# type or method definition

Quick Start

The easiest way to use RimSage is through the online service:

https://mcp.rimsage.com/mcp

You can find the integration methods for different Agent clients in the wiki.

Self-Hosted

RimSage also supports stdio transport for local deployment.

  1. Install dependencies
  1. Clone the repository
git clone https://github.com/realloon/RimSage.git
  1. Install package dependencies
bun install
  1. Build index
bun run src/scripts/import-defs /path/to/your/rimworld/root/path
bun run src/scripts/import-csharp /path/to/decompiled/source/root/path
bun run build

You'll need local RimWorld files and a decompiled C# project, which is allowed under the RimWorld EULA.

  1. Add this MCP server

You can find the integration methods for different Agent clients in the wiki.

Most Agent clients support mcp.json configuration:

{
  "mcpServers": {
    "rimsage": {
      "command": "bun",
      "args": ["run", "/path/to/this/repo"]
    }
  }
}

Replace /path/to/this/repo with the actual path to this repository on your system.

Development

bun run start # stdio
bun run start:http # Streamable HTTP