This record as markdown: /tools/io-github-derekslinz-meta-data-mcp/nasa-get-mars-photos.md
What nasa-get-mars-photos does on Meta Data Mcp
AI agents call nasa-get-mars-photos to retrieve information from Meta Data Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why nasa-get-mars-photos is rated Low
This tool retrieves existing data (NASA Mars photographs) without modifying, deleting, executing code, or incurring financial obligations. It is a straightforward data retrieval operation against a public API, consistent with the Read category. Low severity reflects minimal blast radius—an AI agent misusing this would at worst retrieve unexpected images or exhaust rate limits, posing no damage to systems or data.
From the tool's definition Tool name 'nasa-get-mars-photos' and description 'Get photos taken by NASA' indicate a retrieval operation. The verb 'Get' combined with the action of fetching publicly available NASA photos demonstrates a read-only, query-based operation with no side effects.
Attacks that exploit this kind of access
The rule that runs nasa-get-mars-photos safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Meta Data Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nasa-get-mars-photos, this is the rule to start with:
nasa-get-mars-photos is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Meta Data Mcp, apply this rule, and every nasa-get-mars-photos call is checked against it from then on.
Questions about nasa-get-mars-photos
Get photos taken by NASA. It is categorised as a Read tool in the Meta Data Mcp MCP Server, which means it retrieves data without modifying state.
Register the Meta Data MCP server in PolicyLayer and add a rule for nasa-get-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 Meta Data Mcp. Nothing to install.
nasa-get-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-get-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-get-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-get-mars-photos is provided by the Meta Data MCP server (pypi:meta-data-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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