What is hird?
hird is a MCP server by no-materials that query the Hirð compiler (typed actors on the BEAM): type inference, definition lookup, effect rows, IR fragments, actor protocols and supervision graphs. It is listed under Developer tools and has 3 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | no-materials |
| Repository | no-materials/hird |
| Popularity | 3 GitHub stars |
| Category | Developer tools |
| Security | Low risk (96/100) |
| Rank | #2,548 of 4,418 MCP servers; #559 in Developer tools |
| License | Apache-2.0 |
| Last commit | 2026-09-30 |
| Runs | Locally |
| Language | Rust |
| Platforms | macOS, Windows, Linux |
Is hird safe to install?
hird 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 hird?
- 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/no-materials/hird
- 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 hird -- <command from README> claude mcp add --transport http hird <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 hird for you:
Add the "hird" MCP server from https://github.com/no-materials/hird 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.