Arcaeon Ledger runs on your own machine — the client starts it, so there is no endpoint to ping. 2 073 installs a week from pypi. Last commit 6 Sep 2026.
Tamper-evident action logging for agents: hash-chained append/verify, one JSONL file, zero deps.
What the code does
We read the source, 18 h ago · rules 3dff92dd89df
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.
p = subprocess.run(_ECHO_CMD, input=CLIENT_STREAM, stdout=subprocess.PIPE,
env = dict(os.environ)
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 ledger -- uvx arcaeon-ledger{
"mcpServers": {
"ledger": {
"args": [
"arcaeon-ledger"
],
"command": "uvx"
}
}
}[mcp_servers.ledger]
command = "uvx"
args = ["arcaeon-ledger"]{
"mcpServers": {
"ledger": {
"args": [
"arcaeon-ledger"
],
"command": "uvx"
}
}
}{
"mcpServers": {
"ledger": {
"args": [
"arcaeon-ledger"
],
"command": "uvx"
}
}
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Arcaeon Ledger — questions
Answers built from our own checks of this server.