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Advanced MCP Configuration
Most users should start with MCP Setup.
This page is for people who need to paste or review MCP JSON by hand. MCP architecture and source-linked internals live in DeepWiki for Agent Zero.
Basic Shape
Command-based MCP tool:
{
"mcpServers": {
"sqlite": {
"command": "uvx",
"args": ["mcp-server-sqlite", "--db-path", "/root/db.sqlite"]
}
}
}
URL-based MCP tool:
{
"mcpServers": {
"external-api": {
"url": "https://api.example.com/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_KEY"
}
}
}
}
Common Fields
| Field | Meaning |
|---|---|
command |
Starts a local MCP tool from a command. |
args |
Arguments passed to that command. |
url |
Connects to an MCP tool that is already running. |
headers |
Optional HTTP headers, often used for authentication. |
env |
Optional environment variables for command-based tools. |
disabled |
Temporarily turns one MCP entry off. |
Use command for local tools and url for tools that are already running
somewhere else.
Docker Addresses
If Agent Zero runs in Docker, remember that "localhost" means the container, not always your host machine.
| Where the MCP tool runs | Address to use from Agent Zero |
|---|---|
| Host machine on macOS or Windows | host.docker.internal |
| Another container | The container name on the same Docker network |
| Remote machine | Its reachable HTTPS URL |
| Inside Agent Zero's container | A command-based config |
On Linux, host.docker.internal may need extra Docker setup. Running the MCP
tool in the same Docker network is often simpler.
Safety
- Use MCP tools you trust.
- Keep real API keys out of public screenshots and repositories.
- Prefer project secrets or environment variables for credentials.
- Remove MCP tools you no longer use.