AI agents call nasa_exoplanet 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 is a read-only query tool that retrieves astronomical data about exoplanets. There are no side effects, no data modification, no code execution, and no destructive operations. The worst-case misuse scenario is retrieving or filtering exoplanet data in unintended ways, which poses minimal risk.
From the tool's definition Tool description states it provides 'data about planets beyond our solar system' with no mention of modification, deletion, or execution capabilities. The tool name and description indicate a data retrieval function from NASA's Exoplanet Archive.
Attacks that exploit this kind of access
NASA Exoplanet Archive - data about planets beyond our solar system. 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 nasa_exoplanet: 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.
nasa_exoplanet 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 nasa_exoplanet 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 nasa_exoplanet. 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.
nasa_exoplanet is provided by the Nasa MCP server (@programcomputer/nasa-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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