perplexity_large
AI agents call perplexity_large to retrieve information from Perplexity MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on the server context, this tool uses Perplexity AI's search-augmented LLM at a 'large' complexity level, likely corresponding to deep research queries. All sibling tools appear to be read-only search/query tools. The empty description lowers confidence, but the server description strongly implies retrieval/read behavior with no write or execute side effects.
From the tool's definition Tool name 'perplexity_large' and server description mentions 'search-enhanced language models' for 'quick fact-checking, technical analysis, and deep research'; description is empty.
Attacks that exploit this kind of access
perplexity_large. It is categorised as a Read tool in the Perplexity MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Perplexity MCP Server MCP server in PolicyLayer and add a rule for perplexity_large: 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 Perplexity MCP Server. Nothing to install.
perplexity_large 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 perplexity_large 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 perplexity_large. 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.
perplexity_large is provided by the Perplexity MCP Server MCP server (rohit-seelam/perplexity_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
perplexity_large is one line of Perplexity MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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