Reflex
Sub-100ms local code search — CLI, scripts, and AI agents
Reflex is a local-first, full-text code search engine. Use it from the command line, pipe it into scripts, or connect it to AI coding assistants (Claude Code, Cursor, and any MCP-compatible tool) for instant symbol lookup, dependency analysis, and codebase exploration — fully offline, fully deterministic, no cloud required.
Quick start
1. Install
# Via NPM
npm install -g reflex-search
# Or via Cargo
cargo install reflex-search2. Index and search
# From your project root
rfx index
# Full-text search
rfx query "extract_symbols"
# Symbol definitions only
rfx query "CacheManager" --symbols
# JSON output for scripting
rfx query "TODO" --json --limit 203. (Optional) Connect to an AI agent via MCP
Add this to your Claude Code MCP configuration (~/.claude/claude_desktop_config.json):
{
"mcpServers": {
"reflex": {
"command": "rfx",
"args": ["mcp"]
}
}
}
