Chain Signer runs on your own machine — the client starts it, so there is no endpoint to ping. 601 installs a week from pypi. Last commit 30 Jun 2026.
Security suite for AI agents: flag drains, permit-phishing & risky actions before signing.
What the code does
We read the source, 2 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.
subprocess.check_call([sys.executable, "-m", "pip", "install", "-q", out])
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 chain-signer -- uvx chain-signer{
"mcpServers": {
"chain-signer": {
"command": "uvx",
"args": [
"chain-signer"
]
}
}
}[mcp_servers.chain-signer]
command = "uvx"
args = ["chain-signer"]{
"mcpServers": {
"chain-signer": {
"command": "uvx",
"args": [
"chain-signer"
]
}
}
}{
"servers": {
"chain-signer": {
"type": "stdio",
"command": "uvx",
"args": [
"chain-signer"
]
}
}
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Chain Signer — questions
Answers built from our own checks of this server.