Generate realistic, relational synthetic JSON test data from templates, via the JsonFabrica API.
Connect Runs on your machine
claude mcp add jsonfabrica-mcp-server -e JSONFABRICA_API_KEY=<JSONFABRICA_API_KEY> -e JSONFABRICA_API_URL=<JSONFABRICA_API_URL> -- npx -y @jsonfabrica/[email protected]{
"mcpServers": {
"jsonfabrica-mcp-server": {
"command": "npx",
"args": [
"-y",
"@jsonfabrica/[email protected]"
],
"env": {
"JSONFABRICA_API_KEY": "<JSONFABRICA_API_KEY>",
"JSONFABRICA_API_URL": "<JSONFABRICA_API_URL>"
}
}
}
}{
"mcpServers": {
"jsonfabrica-mcp-server": {
"command": "npx",
"args": [
"-y",
"@jsonfabrica/[email protected]"
],
"env": {
"JSONFABRICA_API_KEY": "<JSONFABRICA_API_KEY>",
"JSONFABRICA_API_URL": "<JSONFABRICA_API_URL>"
}
}
}
}{
"servers": {
"jsonfabrica-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@jsonfabrica/[email protected]"
],
"env": {
"JSONFABRICA_API_KEY": "<JSONFABRICA_API_KEY>",
"JSONFABRICA_API_URL": "<JSONFABRICA_API_URL>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
JSONFABRICA_API_KEYRequired, secret | JsonFabrica API key. Create one at jsonfabrica.com -> Settings -> API Keys. |
JSONFABRICA_API_URLOptional | Base URL of the JsonFabrica gateway. Override only when self-hosting the gateway. |
Details
| Package | @jsonfabrica/[email protected] (NPM, stdio) |
| First published | 6 Oct 2026 |
| Last updated | 6 Oct 2026 |
| Registry name | io.github.ms-methos/jsonfabrica-mcp-server |
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