Synapse RMCP runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 10 Sep 2026.
Rust MCP and CLI server for Docker, host inspection, SSH, logs, ZFS, and safe file operations.
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, 4 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.
if std::path::Path::new("/.dockerenv").exists()
const install = spawnSync(process.execPath, [installer], { stdio: "inherit" });
DOCKER_SOCK="${DOCKER_SOCK:-/var/run/docker.sock}"
IdentityFile ~/.ssh/id_ed25519
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 synapse-rmcp -- npx -y synapse-rmcp
{
"mcpServers": {
"synapse-rmcp": {
"command": "npx",
"args": [
"-y",
"synapse-rmcp"
]
}
}
}
[mcp_servers.synapse-rmcp]
command = "npx"
args = ["-y", "synapse-rmcp"]
{
"mcpServers": {
"synapse-rmcp": {
"command": "npx",
"args": [
"-y",
"synapse-rmcp"
]
}
}
}
{
"servers": {
"synapse-rmcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"synapse-rmcp"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
SYNAPSE_HOME (Optional Synapse appdata directory), SYNAPSE_HOSTS_CONFIG (Inline host topology as a JSON array), SYNAPSE_CONFIG_FILE (Path to a host configuration file), SYNAPSE_RMCP_VERSION (Optional GitHub release tag override for the downloaded Synapse binary), SYNAPSE_RMCP_REPO (Optional GitHub owner/repo override for release asset downloads), SYNAPSE_RMCP_RELEASE_BASE_URL (Optional release download base URL override), RUST_LOG (Tracing filter for Synapse logs).
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Answers built from our own checks of this server.