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. It is a Rust rewrite of Context Hub with team-first features: shared doc pinning, git-tracked annotations, context profiles, and agent config sync.

Installation

pip install chub

Pre-built wheels are available for:

• Linux x86_64, ARM64
• macOS x86_64, Apple Silicon
• Windows x86_64

Quick Start

# Search for docs
chub search "stripe payments"

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

# List all available docs
chub list

# Initialize project for team sharing
chub init

You can also invoke Chub as a Python module:

python -m chub search "stripe"
python -m chub get openai/chat --lang python

Usage

Search and fetch

chub search "stripe"                    # BM25 search
chub search "auth" --limit 5            # limit results
chub get stripe/api --lang python       # fetch a doc
chub get openai/chat --version 4.0      # specific version
chub list                               # list all docs
chub list --json                        # JSON output

Team features

chub init                               # create .chub/ project directory
chub init --from-deps                   # auto-detect dependencies
chub pin add openai/chat --lang python  # pin a doc version
chub pin list                           # list pinned docs
chub profile use backend                # activate a profile
chub annotate openai/chat "note" --team # team annotation
chub detect --pin                       # auto-pin from deps
chub agent-config generate              # generate CLAUDE.md, .cursorrules

Cache management

chub update                             # refresh cached registry
chub cache status                       # show cache state
chub cache clear                        # clear local cache

MCP Integration

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

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

MCP tools: chub_search, chub_get, chub_list, chub_context, chub_pins, chub_annotate, chub_feedback.

How It Works

This Python package is a thin wrapper around the native Rust binary. When you run chub or python -m chub, it delegates to the platform-specific compiled binary bundled in the wheel. No Python runtime dependencies are required.

Links

• Documentation
• GitHub
• npm package
• Issues

License

MIT