@nrl-ai/chub

The missing context layer for AI-assisted development teams.

Chub is a high-performance CLI + MCP server that serves curated, versioned API documentation to AI coding agents. Built in Rust, it is a drop-in replacement for Context Hub with team-first features.

Installation

npm install -g @nrl-ai/chub

Quick Start

# Search for docs
chub search "stripe payments"

# Fetch a doc
chub get openai/chat --lang python

# List all available docs
chub list

Features

• 1,553+ curated docs — API references for popular libraries and frameworks
• ~44ms cold start — native Rust binary, no Node.js runtime needed
• 10 MB binary — vs ~22 MB node_modules
• MCP server — AI agents search and fetch docs automatically
• Doc pinning — lock versions so every agent uses the same reference
• Team annotations — shared knowledge committed to git
• Context profiles — role-scoped context with inheritance
• Agent config sync — generate CLAUDE.md, .cursorrules from one source
• Dep auto-detection — scan package.json, Cargo.toml, requirements.txt and more

Usage

Team setup

# Initialize project for team sharing
chub init

# Auto-detect dependencies and pin matching docs
chub init --from-deps

# Pin doc versions for the team
chub pin add openai/chat --lang python --version 4.0
chub pin list

MCP server

Start the built-in MCP server for AI agents:

chub mcp

Add to your MCP config (.mcp.json for Claude Code, .cursor/mcp.json for Cursor):

{
  "mcpServers": {
    "chub": {
      "command": "chub",
      "args": ["mcp"]
    }
  }
}

More commands

chub search "auth" --limit 5            # search with limit
chub get stripe/api --lang javascript    # language-specific doc
chub profile use backend                 # activate context profile
chub annotate openai/chat "note" --team  # team annotation
chub detect --pin                        # auto-pin from dependencies
chub agent-config generate               # generate CLAUDE.md, .cursorrules
chub check --fix                         # update outdated pins
chub snapshot create v1.0                # snapshot current pins
chub update                              # refresh cached registry

How It Works

This package is a thin JavaScript wrapper that resolves the correct platform-specific binary from optionalDependencies. No Node.js runtime is needed at execution time — it runs the native Rust binary directly.

Supported platforms:

| Package | Platform | |---|---| | @nrl-ai/chub-linux-x64 | Linux x86_64 | | @nrl-ai/chub-linux-arm64 | Linux ARM64 | | @nrl-ai/chub-darwin-x64 | macOS Intel | | @nrl-ai/chub-darwin-arm64 | macOS Apple Silicon | | @nrl-ai/chub-win32-x64 | Windows x86_64 |

Also available via

pip install chub          # PyPI
cargo install chub        # crates.io
brew install nrl-ai/tap/chub  # Homebrew

Links

• Documentation
• GitHub
• PyPI
• crates.io

License

MIT