Pause a heartbeat monitor. No alerts will be sent while paused. Use resume_heartbeat to reactivate.
Part of the PingZen Uptime Monitoring server.
Free to start. No card required.
AI agents use pause_heartbeat to create or modify resources in PingZen Uptime Monitoring. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call pause_heartbeat repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach PingZen Uptime Monitoring.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"pause_heartbeat": {
"limits": [
{
"counter": "pause_heartbeat_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full PingZen Uptime Monitoring policy for all 44 tools.
These attack patterns abuse exactly the kind of access pause_heartbeat gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Pause a heartbeat monitor. No alerts will be sent while paused. Use resume_heartbeat to reactivate.. It is categorised as a Write tool in the PingZen Uptime Monitoring MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PingZen Uptime Monitoring MCP server in PolicyLayer and add a rule for pause_heartbeat: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches PingZen Uptime Monitoring. Nothing to install.
pause_heartbeat is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pause_heartbeat rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for pause_heartbeat. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
pause_heartbeat is provided by the PingZen Uptime Monitoring MCP server (pingzen/uptime-monitoring). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 44 PingZen Uptime Monitoring tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.