Execute Home Assistant services
Part of the Slhad Aha Mcp server.
Free to start. No card required.
AI agents invoke Service Calls to trigger processes or run actions in Slhad Aha Mcp. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
Service Calls can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"Service Calls": {
"limits": [
{
"counter": "service calls_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Slhad Aha Mcp policy for all 6 tools.
These attack patterns abuse exactly the kind of access Service Calls gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Execute Home Assistant services. It is categorised as a Execute tool in the Slhad Aha Mcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Slhad Aha MCP server in PolicyLayer and add a rule for Service Calls: 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 Slhad Aha Mcp. Nothing to install.
Service Calls is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the Service Calls 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 Service Calls. 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.
Service Calls is provided by the Slhad Aha MCP server (https://server.smithery.ai/@slhad/aha-mcp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Slhad Aha Mcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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