MCP Servers
Connect external databases, APIs, CLI tools, and web services to your Kernax agent using the open Model Context Protocol.
The Model Context Protocol
The Model Context Protocol (MCP) is an open industry standard that enables AI models to safely interact with external tools, databases, APIs, and developer environments through standardized client-server interfaces.
Kernax features full native support for MCP as a first-class client. Instead of writing brittle custom API integrations, you can plug in any community or enterprise MCP server in seconds.
Configuring .kernax/mcp.json
Kernax automatically discovers MCP servers declared in your workspace's .kernax/mcp.json or global user directory (~/.kernax/mcp.json):
{
"mcpServers": {
"postgres": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-postgres", "postgresql://localhost/mydb"]
},
"github": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-github"],
"env": {
"GITHUB_PERSONAL_ACCESS_TOKEN": "ghp_xxxxxxxxxxxx"
}
}
}
}1-Click Pre-Configured Servers
In the Kernax Settings menu (or by typing @mcp in chat), you can enable popular enterprise servers with zero manual configuration:
| Server | Transport | Capabilities Provided |
|---|---|---|
| PostgreSQL | stdio |
Inspect schemas, explain queries, query live tables, audit indexes |
| GitHub | stdio |
Create pull requests, read issues, inspect remote git diffs |
| Brave Search | stdio |
Execute real-time web lookups for updated framework documentation |
| Figma | SSE / HTTP |
Extract component design tokens and generate pixel-perfect React code |
| Memory | stdio |
Knowledge graph persistence across multi-day engineering sessions |
Custom stdio & SSE Transports
Kernax supports both local subprocess (stdio) and remote streaming (Server-Sent Events / SSE) transports:
- Standard I/O (stdio): Best for local developer tools, Docker containers, and npm packages. Kernax manages process lifecycle and terminates child processes on workspace close.
- Remote SSE (Server-Sent Events): Best for cloud-hosted enterprise microservices and secure internal intranets. Supports custom authorization headers and TLS certificate pinning.