Get photos taken by a NASA Mars rover.
AI agents call nasa_mars_photos to retrieve information from Mcp Everything without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves publicly available NASA Mars rover photograph data. It performs no data modification, deletion, execution of code, financial transactions, or irreversible actions. The operation is purely informational and read-only, making it the lowest risk category.
From the tool's definition Tool name 'nasa_mars_photos' and description 'Get photos taken by a NASA Mars rover' indicate a retrieval operation with no side effects. The verb 'Get' is characteristic of Read category tools.
Attacks that exploit this kind of access
Get photos taken by a NASA Mars rover. It is categorised as a Read tool in the Mcp Everything MCP Server, which means it retrieves data without modifying state.
Register the Mcp Everything MCP server in PolicyLayer and add a rule for nasa_mars_photos: 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 Mcp Everything. Nothing to install.
nasa_mars_photos 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_mars_photos 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_mars_photos. 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_mars_photos is provided by the Mcp Everything MCP server (wellix260/mcp-everything). 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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