What is vivac?
vivac is a MCP server by JAAvila-Of that a provenance tree for coding agents: every node records the node it was born from, so the agent can ask why the work is where it is. A session brief with the standing decisions and what. It is listed under Knowledge & memory and has 1 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | JAAvila-Of |
| Repository | JAAvila-Of/vivac |
| Popularity | 1 GitHub stars |
| Category | Knowledge & memory |
| Security | Low risk (96/100) |
| Rank | #3,432 of 4,418 MCP servers; #350 in Knowledge & memory |
| License | Apache-2.0 |
| Last commit | 2026-10-18 |
| Runs | Locally |
| Language | Rust |
| Platforms | macOS, Windows, Linux |
Is vivac safe to install?
vivac 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 vivac?
- 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/JAAvila-Of/vivac
- 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 vivac -- <command from README> claude mcp add --transport http vivac <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 vivac for you:
Add the "vivac" MCP server from https://github.com/JAAvila-Of/vivac 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.