Get detailed information about a specific asteroid.
AI agents call lookup_asteroid to retrieve information from Nasa without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves asteroid data from NASA's API without creating, modifying, deleting, or executing any operations. It is a straightforward read-only data lookup with no side effects or risk of misuse causing harm. The blast radius is minimal—worst case, an AI agent queries asteroid information repeatedly, which is a non-destructive API access pattern.
From the tool's definition Tool name 'lookup_asteroid' and description 'Get detailed information about a specific asteroid' indicate a query/retrieval operation with no modification or execution of external actions.
Documented attack patterns abuse exactly the kind of access lookup_asteroid gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nasa, and nothing reaches the server without passing your rules. This is the rule we recommend for lookup_asteroid:
{
"version": "1",
"default": "deny",
"tools": {
"lookup_asteroid": {}
}
}lookup_asteroid is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get detailed information about a specific asteroid. It is categorised as a Read tool in the Nasa MCP Server, which means it retrieves data without modifying state.
Register the Nasa MCP server in PolicyLayer and add a rule for lookup_asteroid: 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 Nasa. Nothing to install.
lookup_asteroid is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the lookup_asteroid 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 lookup_asteroid. 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.
lookup_asteroid is provided by the Nasa MCP server (jezweb/nasa-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nasa, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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11 Nasa tools catalogued and risk-classified — across an index of 43,000+ MCP servers.