RPG Encoder

What it does

RPG Encoder builds a deep semantic graph of your codebase using Tree-sitter, allowing AI agents to understand intent, structure, and dependencies without relying on chaotic grep/cat cycles. It compresses the entire repository's functional essence into a semantic snapshot that fits within an LLM's context window.

Tools

• semantic_snapshot: Get whole-repo semantic understanding in one call.
• search_node: Search entities by intent or keywords using hybrid embedding.
• impact_radius: BFS reachability analysis to find what depends on a specific entity.
• plan_change: Generate a modification order and blast radius for proposed code changes.
• explore_rpg: Traverse the dependency graph upstream or downstream.
• context_pack: A single-call search, fetch, and explore operation within a token budget.

Installation

{
  "mcpServers": {
    "rpg": {
      "command": "npx",
      "args": ["-y", "-p", "rpg-encoder", "rpg-mcp-server"]
    }
  }
}

Supported hosts

Confirmed support for Claude Code, Cursor, and Windsurf.