narsil-mcp

Overview

narsil-mcp is a comprehensive Rust-based MCP server offering deep code intelligence capabilities. It features 90 specialized tools across 32 programming languages, with support for neural semantic search, taint analysis, call graph generation, and supply chain security features like SBOM generation. The server is privacy-first, works entirely offline, and supports both local and remote repository analysis. Its Rust implementation provides memory safety and performance benefits, with a minimal binary size of ~30MB.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• search_symbols

  Search for symbols in code repositories

  Try:Find all functions in the Rust codebaseTry:Search for classes named 'Database'
• call_graph

  Generate function call graphs for code analysis

  Try:Show the call graph for the main functionTry:Visualize dependencies between modules
• security_scan

  Perform security vulnerability scanning on code

  Try:Scan for OWASP top 10 vulnerabilitiesTry:Check for SQL injection patterns
• generate_sbom

  Generate Software Bill of Materials for dependencies

  Try:Create an SBOM for this projectTry:List all dependencies with licenses
• semantic_search

  Find similar code using neural embeddings

  Try:Find similar implementations of this functionTry:Search for code patterns like this
• taint_analysis

  Track data flow paths in code to identify potential security issues

  Try:Trace user input to sensitive operationsTry:Check for tainted data flows
• extract_dependencies

  Extract and analyze project dependencies

  Try:List all npm dependenciesTry:Analyze Python package requirements
• find_code_patterns

  Find specific code patterns across repositories

  Try:Find all TODO commentsTry:Identify deprecated API usage
• extract_documentation

  Extract documentation comments and docstrings

  Try:Get documentation for this moduleTry:Extract all docstrings in the project
• analyze_control_flow

  Analyze control flow graphs of functions

  Try:Show control flow for this functionTry:Identify unreachable code paths
• detect_dead_code

  Identify unused or dead code in repositories

  Try:Find unused functionsTry:Identify dead code paths
• file_metadata

  Extract metadata and structure information from files

  Try:Get metadata for this Python fileTry:Extract function definitions from this module

Note: Inferred tool names and descriptions from feature descriptions, usage examples, and the broad functionality described in the README. The server mentions 90 tools total but doesn't list them all explicitly.

Comparable tools

Installation

brew tap postrv/narsil
brew install narsil-mcp

scoop bucket add narsil https://github.com/postrv/scoop-narsil
scoop install narsil-mcp

cargo install narsil-mcp

npm install -g narsil-mcp

{
  "mcpServers": {
    "narsil-mcp": {
      "command": "narsil-mcp",
      "args": ["--repos", "~/projects"]
    }
  }
}

FAQ

What languages are supported by narsil-mcp?

narsil-mcp supports 32 programming languages including Rust, Python, JavaScript, TypeScript, Go, C/C++, Java, C#, and many others. See the README for the complete list with supported extensions.

Does narsil-mcp require internet connectivity?

No, narsil-mcp is designed to work fully offline. All analysis happens locally on your machine. Neural search features require internet access only if using cloud-based embedding services.

On Hacker News

Recent discussion from the developer community.

• Narsil-MCP: a Rust-powered MCP server with 76 tools for deep code intelligence▲ 3
  Story by postrv · 2025-12-24

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