Orionbelt Semantic Layer runs on your own machine — the client starts it, so there is no endpoint to ping. 626 installs a week from pypi. Last commit 6 Nov 2026.
API-first semantic layer MCP server compiling YAML models into dialect-specific SQL
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.
We read the source, 22 h ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
directory = os.path.join(self._results_dir, prefix, safe)
return pin_decimal_digits(yaml.load(text, Loader=_DigitKeepingSafeLoader))
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add orionbelt-semantic-layer -- uvx orionbelt-semantic-layer
{
"mcpServers": {
"orionbelt-semantic-layer": {
"command": "uvx",
"args": [
"orionbelt-semantic-layer"
]
}
}
}
[mcp_servers.orionbelt-semantic-layer]
command = "uvx"
args = ["orionbelt-semantic-layer"]
{
"mcpServers": {
"orionbelt-semantic-layer": {
"command": "uvx",
"args": [
"orionbelt-semantic-layer"
]
}
}
}
{
"servers": {
"orionbelt-semantic-layer": {
"type": "stdio",
"command": "uvx",
"args": [
"orionbelt-semantic-layer"
]
}
}
}
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Answers built from our own checks of this server.