Extract entities (emails, URLs, dates, etc.) from note content
AI agents call analysis-extract-entities to retrieve information from MCP Index Notes without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and analyzes note content to identify and extract structured entities like emails, URLs, and dates. It has no capability to modify, delete, or execute external operations. The extraction process is passive analysis with no side effects.
From the tool's definition Tool description: 'Extract entities (emails, URLs, dates, etc.) from note content' — performs analysis and extraction of information from existing notes without modifying or deleting them.
Attacks that exploit this kind of access
Extract entities (emails, URLs, dates, etc.) from note content. It is categorised as a Read tool in the MCP Index Notes MCP Server, which means it retrieves data without modifying state.
Register the MCP Index Notes MCP server in PolicyLayer and add a rule for analysis-extract-entities: 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 Index Notes. Nothing to install.
analysis-extract-entities 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 analysis-extract-entities 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 analysis-extract-entities. 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.
analysis-extract-entities is provided by the MCP Index Notes MCP server (vjsr007/mcp-index-notes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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