LeIndex

Summary

LeIndex is a semantic code search engine that can search repositories by meaning rather than relying only on matching terms. It combines TF-IDF lexical matching with Program Dependence Graph structure and optional neural scoring from local ONNX models. Multiple repositories can be indexed and searched together. LeIndex can also run as an MCP server for AI coding tools, with listed integrations including Zed, Cursor, VS Code, Claude Code, and other tools. Its 20 MCP tools cover search, analysis, indexing, reading, editing, renaming, and impact analysis. Local ONNX models and fragment embeddings can keep data on the user's machine; OpenAI, Cohere, and compatible remote embedding endpoints are also supported, but require network access and API keys. Without an embedding backend, search falls back to offline TF-IDF, which lacks semantic understanding. Database discovery is opt-in, sensitive directories are automatically excluded, and SQL operations use parameterized queries. It is free, open source under the MIT license, and supports Linux, macOS, Windows, web, API, and self-hosted use.

Who it is for

LeIndex suits developers who need to search across repositories or connect code search to MCP-compatible AI coding tools. It may also suit users who prefer local processing or self-hosting.

Compared on code search tools

Indexing scope

repositoriesgithub.com

Deployment

self_hostedgithub.com

Code navigation

Yesgithub.com

Facts

Product

LeIndex is a semantic code search engine that searches code by meaning rather than keywords.github.com · 4 Oct 2026

Search

It combines TF-IDF lexical matching, Program Dependence Graph structure, and optional local ONNX neural scoring.github.com · 4 Oct 2026

Cross-project

It can index and search multiple repositories together.github.com · 4 Oct 2026

AI tools

LeIndex runs as an MCP server for AI coding tools, including Claude Code, Cursor, and other MCP-compatible agents.github.com · 4 Oct 2026

Integrations

The README provides setup instructions for Zed, Cursor, VS Code, Claude Code, Amp, OpenCode, Qwen CLI, iFlow CLI, Droid, Gemini CLI, and Claude Desktop.github.com · 4 Oct 2026

MCP tools

LeIndex lists 20 MCP tools for search, analysis, indexing, reading, editing, renaming, and impact analysis.github.com · 4 Oct 2026

Local privacy

The README says local ONNX models keep data on the user's machine and incur no API costs; fragment embeddings are also local unless a remote provider is chosen.github.com · 4 Oct 2026

Security

Database discovery is opt-in, sensitive directories such as .ssh, .aws, and .gnupg are automatically excluded, and SQL operations use parameterized queries.github.com · 4 Oct 2026

Cloud embeddings

OpenAI, Cohere, and custom OpenAI-compatible embedding endpoints are supported and require network access and provider API keys.github.com · 4 Oct 2026

Fallback

Without an embedding backend, LeIndex falls back to offline TF-IDF keyword search, which the README says lacks semantic understanding.github.com · 4 Oct 2026

Install paths

The README documents installation through Cargo, npm, PyPI, a release install script, or building from source.github.com · 4 Oct 2026

Dashboard

An optional Bun and React dashboard provides project metrics and graph telemetry.github.com · 4 Oct 2026

License

The repository states that LeIndex is distributed under the MIT license.github.com · 4 Oct 2026

Where it ranks on Everything Xiaomi

• Best Code Search Tools in 2026#10 of 40

Sources

• github.com/scooter-lacroix/leindex· checked 4 Oct 2026