Agent Output Guard runs on your own machine — the client starts it, so there is no endpoint to ping. 71 installs a week from npm. Last commit 5 Apr 2026.
Validate and verify data from other agents before acting on it. Zero LLM costs.
Nothing serious here today
Today is the operative word: we check Agent Output Guard every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 agent-output-guard -- npx -y @agenson-horrowitz/agent-output-guard-mcp{
"mcpServers": {
"agent-output-guard": {
"args": [
"-y",
"@agenson-horrowitz/agent-output-guard-mcp"
],
"command": "npx"
}
}
}[mcp_servers.agent-output-guard]
command = "npx"
args = ["-y", "@agenson-horrowitz/agent-output-guard-mcp"]{
"mcpServers": {
"agent-output-guard": {
"args": [
"-y",
"@agenson-horrowitz/agent-output-guard-mcp"
],
"command": "npx"
}
}
}{
"mcpServers": {
"agent-output-guard": {
"args": [
"-y",
"@agenson-horrowitz/agent-output-guard-mcp"
],
"command": "npx"
}
}
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Agent Output Guard — questions
Answers built from our own checks of this server.