Langfuse MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 3 842 installs a week from pypi. Last commit 29 Oct 2026.
Langfuse MCP server for accessing and analyzing telemetry data via natural language
Nothing serious here today
Today is the operative word: we check Langfuse MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 langfuse-mcp -e 'LANGFUSE_PUBLIC_KEY=<LANGFUSE_PUBLIC_KEY>' -e 'LANGFUSE_SECRET_KEY=<LANGFUSE_SECRET_KEY>' -- uvx langfuse-mcp{
"mcpServers": {
"langfuse-mcp": {
"command": "uvx",
"args": [
"langfuse-mcp"
],
"env": {
"LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
"LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>"
}
}
}
}[mcp_servers.langfuse-mcp]
command = "uvx"
args = ["langfuse-mcp"]
env = { LANGFUSE_PUBLIC_KEY = "<LANGFUSE_PUBLIC_KEY>", LANGFUSE_SECRET_KEY = "<LANGFUSE_SECRET_KEY>" }{
"mcpServers": {
"langfuse-mcp": {
"command": "uvx",
"args": [
"langfuse-mcp"
],
"env": {
"LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
"LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>"
}
}
}
}{
"servers": {
"langfuse-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"langfuse-mcp"
],
"env": {
"LANGFUSE_PUBLIC_KEY": "<LANGFUSE_PUBLIC_KEY>",
"LANGFUSE_SECRET_KEY": "<LANGFUSE_SECRET_KEY>"
}
}
}
}Put your own values in place of
<LANGFUSE_PUBLIC_KEY> (Langfuse public API key), <LANGFUSE_SECRET_KEY> (Langfuse secret API key).
The author’s registry entry marks them as required.
Optional settings from the registry entry, left out of the block above:
LANGFUSE_HOST (Langfuse API base URL (Cloud or self-hosted)), LANGFUSE_MCP_READ_ONLY (Set true to disable write tools).
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Langfuse MCP — questions
Answers built from our own checks of this server.