What is schemabrain?
schemabrain is a MCP server by Arun-kc that read-only Postgres access with SQL compiled from your own definitions, PII refusal and a tamper-evident audit chain. It is listed under Data & databases and has 12 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | Arun-kc |
| Repository | Arun-kc/schemabrain |
| Popularity | 12 GitHub stars |
| Category | Data & databases |
| Security | Low risk (84/100) |
| Rank | #1,590 of 4,418 MCP servers; #123 in Data & databases |
| License | Apache-2.0 |
| Last commit | 2026-08-24 |
| Stars this week | +1 |
| Runs | Locally |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is schemabrain safe to install?
schemabrain scores 84/100 on the MCPMods security check: Low risk. Things to review: can take actions such as send, write or deploy. It passed 4 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 |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install schemabrain?
- 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/Arun-kc/schemabrain
- 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 schemabrain -- <command from README> claude mcp add --transport http schemabrain <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 schemabrain for you:
Add the "schemabrain" MCP server from https://github.com/Arun-kc/schemabrain 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.