Yarr MCP runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 15 Aug 2026.
Rust MCP and CLI server for Sonarr, Radarr, Prowlarr, Plex, Jellyfin, and download clients.
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.
Today is the operative word: we check Yarr MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 yarr-mcp -- npx -y yarr-mcp
{
"mcpServers": {
"yarr-mcp": {
"args": [
"-y",
"yarr-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.yarr-mcp]
command = "npx"
args = ["-y", "yarr-mcp"]
{
"mcpServers": {
"yarr-mcp": {
"args": [
"-y",
"yarr-mcp"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"yarr-mcp": {
"args": [
"-y",
"yarr-mcp"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
YARR_SONARR_URL (Optional Sonarr base URL.), YARR_SONARR_API_KEY (Optional Sonarr API key.), YARR_RADARR_URL (Optional Radarr base URL.), YARR_RADARR_API_KEY (Optional Radarr API key.), YARR_PLEX_URL (Optional Plex base URL.), YARR_PLEX_TOKEN (Optional Plex token.), YARR_VERSION (Optional GitHub release tag override for the downloaded Yarr binary.), YARR_REPO (Optional GitHub owner/repo override for release asset downloads.), YARR_RELEASE_BASE_URL (Optional release download base URL override.), RUST_LOG (Tracing filter for Yarr logs.).
The author declared them in the registry entry; get the values from the project itself.
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Answers built from our own checks of this server.