What is heap-seance?
heap-seance is a MCP server by SegfaultSorcerer that java memory leak diagnostics via jcmd, jmap, jstat, JFR, Eclipse MAT and async-profiler, with conservative scans, deep forensics and confidence-based verdicts. It is listed under Developer tools and has 4 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | SegfaultSorcerer |
| Repository | SegfaultSorcerer/heap-seance |
| Popularity | 4 GitHub stars |
| Category | Developer tools |
| Security | Low risk (96/100) |
| Rank | #2,333 of 4,418 MCP servers; #523 in Developer tools |
| License | Apache-2.0 |
| Last commit | 2026-03-15 |
| Runs | Locally |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is heap-seance safe to install?
heap-seance 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 heap-seance?
- 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/SegfaultSorcerer/heap-seance
- 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 heap-seance -- <command from README> claude mcp add --transport http heap-seance <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 heap-seance for you:
Add the "heap-seance" MCP server from https://github.com/SegfaultSorcerer/heap-seance 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.