Ask an LLM to write SQL against a raw star schema and sooner or later it joins two fact tables and hands you a revenue number inflated by a factor of eight. It looks right. Nobody catches it.
orionbelt-semantic-layer is an MCP project maintained in the ralfbecher/orionbelt-semantic-layer repository. The maintainer describes its purpose as “Ask an LLM to write SQL against a raw star schema and sooner or later it joins two fact tables and hands you a revenue…”. Read the project documentation for the complete scope.
The documented pypi package is orionbelt-semantic-layer-mcp. The configuration below comes from the maintainer’s example; adapt its paths and account values to your environment.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
{
"mcpServers": {
"orionbelt": {
"command": "uvx",
"args": [
"orionbelt-semantic-layer-mcp"
]
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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