Downtrace runs on your own machine — the client starts it, so there is no endpoint to ping. 129 installs a week from npm. Last commit 6 Nov 2026.
Ask a Downtrace project what changed in a Node.js backend in production, and why.
What the code does
We read the source, 3 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.
const child = spawn(spec.command, {
const lib = (file: string): string => path.join(root, "lib", file);
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 downtrace -e 'DOWNTRACE_URL=<DOWNTRACE_URL>' -- npx -y @downtrace/mcp{
"mcpServers": {
"downtrace": {
"command": "npx",
"args": [
"-y",
"@downtrace/mcp"
],
"env": {
"DOWNTRACE_URL": "<DOWNTRACE_URL>"
}
}
}
}[mcp_servers.downtrace]
command = "npx"
args = ["-y", "@downtrace/mcp"]
env = { DOWNTRACE_URL = "<DOWNTRACE_URL>" }{
"mcpServers": {
"downtrace": {
"command": "npx",
"args": [
"-y",
"@downtrace/mcp"
],
"env": {
"DOWNTRACE_URL": "<DOWNTRACE_URL>"
}
}
}
}{
"servers": {
"downtrace": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@downtrace/mcp"
],
"env": {
"DOWNTRACE_URL": "<DOWNTRACE_URL>"
}
}
}
}Put your own value in place of
<DOWNTRACE_URL> (The address of your Downtrace).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
DOWNTRACE_TOKEN (An access credential of the project, of level operate; without it the server is read-only).
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Downtrace — questions
Answers built from our own checks of this server.