Shield runs on your own machine — the client starts it, so there is no endpoint to ping. 42 installs a week from npm. Last commit 26 Oct 2026.
Stdio MCP auth proxy: wrap any MCP server with per-tool permission enforcement.
We read the source, 6 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.
const child = spawn(cmd, args, { stdio: ['pipe', 'pipe', 'inherit'] });
Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.
result = subprocess.run(
const content = fs.readFileSync(path.join(receiptDir, latest), 'utf-8');
pipeline.innerHTML = STEPS.map(s =>
…d00cf5f5b2fc97d9bbfdb7d025"}}});var j,I=co(()=>{j={tavily:{label:"Tavily POST /search 402 (observed 2026-09-29)",header:"eyJ4NDAyVmVyc2lvbiI6MiwiZXJyb3IiOiJQYXltZW50IGhlYWRlciBpcyByZXF1aXJlZCIsInJlc291cmNlIjp7InVybCI6Imh0dHBzOi8veDQwMi50YXZpbHkuY29tL3NlYXJjaCIsImRlc2NyaXB0aW9uIjo…
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 shield -- npx -y @bolyra/shield
{
"mcpServers": {
"shield": {
"command": "npx",
"args": [
"-y",
"@bolyra/shield"
]
}
}
}
[mcp_servers.shield]
command = "npx"
args = ["-y", "@bolyra/shield"]
{
"mcpServers": {
"shield": {
"command": "npx",
"args": [
"-y",
"@bolyra/shield"
]
}
}
}
{
"servers": {
"shield": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@bolyra/shield"
]
}
}
}
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Answers built from our own checks of this server.