Stop the current flats capture in NINA astronomy software.
AI agents invoke nina_stop_flats to trigger actions in Nina Advanced API MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool triggers an external operation (equipment control) whose effects depend on context—stopping flats at the wrong time can damage calibration workflows and require manual intervention or re-sequencing of observations. While not destructive in the sense of permanent data loss, it irreversibly interrupts a time-sensitive process.
From the tool's definition Stops an ongoing flats capture operation in NINA astronomy software. Flats are calibration exposures that require precise timing and equipment state.
Documented attack patterns abuse exactly the kind of access nina_stop_flats gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nina Advanced API MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for nina_stop_flats:
{
"version": "1",
"default": "deny",
"tools": {
"nina_stop_flats": {
"limits": [
{
"counter": "nina_stop_flats_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}nina_stop_flats stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Stop the current flats capture in NINA astronomy software. It is categorised as a Execute tool in the Nina Advanced API MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Nina Advanced API MCP server in PolicyLayer and add a rule for nina_stop_flats: 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 Nina Advanced API MCP. Nothing to install.
nina_stop_flats 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 nina_stop_flats 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 nina_stop_flats. 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.
nina_stop_flats is provided by the Nina Advanced API MCP server (padev1/nina_advanced_api_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nina Advanced API MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
103 Nina Advanced API MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.