Orionbelt Semantic Layer

Name: Orionbelt Semantic Layer
Author: ralfbecher

by ralfbechercommunityv0.3.0

OrionBelt Semantic Layer is an API-first semantic engine that compiles and executes YAML semantic models as optimized SQL across multiple database dialects. It allows users to query using business concepts instead of raw SQL.

From the registry: API-first semantic layer MCP server compiling YAML models into dialect-specific SQL

GitHub Repository

Install & configure

Prerequisites

required
Python 3.12+ and uv
Required to run the REST API backend that the MCP server delegates to
```
$ pip install uv
```
https://docs.astral.sh/uv/
required
Clone and start the REST API
Clone repo, run uv sync, then start the API server
```
$ git clone https://github.com/ralfbecher/orionbelt-semantic-layer && cd orionbelt-semantic-layer && uv sync && uv run orionbelt-api
```
https://github.com/ralfbecher/orionbelt-semantic-layer

Install in your client

Paste into the AI you're chatting with — it will figure out the rest

Please install the `orionbelt-semantic-layer` MCP server into my current AI client (that's you).

Required prerequisites (do these first if not already done):
- **Python 3.12+ and uv** — Required to run the REST API backend that the MCP server delegates to Run: `pip install uv` (https://docs.astral.sh/uv/)
- **Clone and start the REST API** — Clone repo, run uv sync, then start the API server Run: `git clone https://github.com/ralfbecher/orionbelt-semantic-layer && cd orionbelt-semantic-layer && uv sync && uv run orionbelt-api` (https://github.com/ralfbecher/orionbelt-semantic-layer)

Canonical MCP server config (HTTP transport):
- url: `http://localhost:8000`

Note: The MCP server is a separate thin client in orionbelt-semantic-layer-mcp repo that delegates to the REST API. REST API must be running first. Docker Hub: ralforion/orionbelt-api. Hosted demo at http://35.187.174.102. BSL 1.1 license.

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.

Note: The MCP server is a separate thin client in orionbelt-semantic-layer-mcp repo that delegates to the REST API. REST API must be running first. Docker Hub: ralforion/orionbelt-api. Hosted demo at http://35.187.174.102. BSL 1.1 license.