Orcaslicer MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 2 141 installs a week from pypi. Last commit 6 Nov 2026.
Work a running OrcaSlicer with AI: slice, tune, and understand what each setting costs
What the code does
We read the source, 1 d 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.
const child = spawn(uvx, ["orcaslicer-mcp"], {
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
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.
Connect this server
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 orcaslicer-mcp -e 'ORCA_API_TOKEN=<ORCA_API_TOKEN>' -- uvx orcaslicer-mcp{
"mcpServers": {
"orcaslicer-mcp": {
"command": "uvx",
"args": [
"orcaslicer-mcp"
],
"env": {
"ORCA_API_TOKEN": "<ORCA_API_TOKEN>"
}
}
}
}[mcp_servers.orcaslicer-mcp]
command = "uvx"
args = ["orcaslicer-mcp"]
env = { ORCA_API_TOKEN = "<ORCA_API_TOKEN>" }{
"mcpServers": {
"orcaslicer-mcp": {
"command": "uvx",
"args": [
"orcaslicer-mcp"
],
"env": {
"ORCA_API_TOKEN": "<ORCA_API_TOKEN>"
}
}
}
}{
"servers": {
"orcaslicer-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"orcaslicer-mcp"
],
"env": {
"ORCA_API_TOKEN": "<ORCA_API_TOKEN>"
}
}
}
}Put your own value in place of
<ORCA_API_TOKEN> (Remote API token from the OrcaSlicer MCP build (Preferences -> Remote API)).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
ORCA_API_URL (OrcaSlicer Remote API address; defaults to http://127.0.0.1:13130), ORCA_MCP_ALLOW_KEYS (Optional comma-separated config keys the MCP may change even though they run code or drive the printer directly (post_process, *_gcode, print host settings). Wildcards allowed. Blank by default), ORCA_PRINTER_URL (Optional printer address; by default the address in OrcaSlicer's active printer profile is used. A user name and password can be part of it (http://user:[email protected]); percent-encode special characters in them (@ as %40). A password in it is stored as an ordinary setting, so prefer ORCA_PRINTER_API_KEY where the printer accepts a key), ORCA_PRINTER_API_KEY (Optional API key for printers that need one (OctoPrint, or Moonraker with authorization)), ORCA_PRINTER_ID (Optional printer name for the outcome store; defaults to the host name of ORCA_PRINTER_URL when that is set, otherwise the printer profile's name, otherwise unknown).
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Orcaslicer MCP — questions
Answers built from our own checks of this server.