What is wrg-sigma-rules?
wrg-sigma-rules is a MCP server by WRG-11 that write, validate and convert Sigma detection rules for Splunk, Elastic, Kibana and Wazuh, backed by a rule corpus covering MITRE ATT&CK tactics. It is listed under Security and has 2 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | WRG-11 |
| Repository | WRG-11/wrg-sigma-rules |
| Popularity | 2 GitHub stars |
| Category | Security |
| Security | Review before installing (72/100) |
| Rank | #3,036 of 4,418 MCP servers; #169 in Security |
| License | MIT |
| Last commit | 2026-10-15 |
| Runs | Locally and in the cloud |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is wrg-sigma-rules safe to install?
wrg-sigma-rules scores 72/100 on the MCPMods security check: Review before installing. Things to review: sends your data to a cloud service; can take actions such as send, write or deploy. It passed 3 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 |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install wrg-sigma-rules?
- 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/WRG-11/wrg-sigma-rules
- 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 wrg-sigma-rules -- <command from README> claude mcp add --transport http wrg-sigma-rules <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 wrg-sigma-rules for you:
Add the "wrg-sigma-rules" MCP server from https://github.com/WRG-11/wrg-sigma-rules 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.