What is vex?
vex is a MCP server by tenatarika that local code search over a tree-sitter index: exact symbol lookup, scope-aware usages, call graph and impact analysis, AST patterns, indexed grep and semantic search across 19 languages. It is listed under Developer tools and has 12 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | tenatarika |
| Repository | tenatarika/vex |
| Popularity | 12 GitHub stars |
| Category | Developer tools |
| Security | Low risk (96/100) |
| Rank | #1,603 of 4,418 MCP servers; #372 in Developer tools |
| License | MIT |
| Last commit | 2026-10-17 |
| Stars this week | +1 |
| Runs | Locally |
| Language | Rust |
| Platforms | macOS, Windows, Linux |
Is vex safe to install?
vex scores 96/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Runs on your machine only | Pass |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install vex?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/tenatarika/vex
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add vex -- <command from README> claude mcp add --transport http vex <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs vex for you:
Add the "vex" MCP server from https://github.com/tenatarika/vex to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.