Search for text files containing specific text with context preview
AI agents call search_by_content_text to retrieve information from LocalFS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches for and retrieves matching files and their content context. It performs read-only operations on the filesystem without creating, modifying, deleting, executing, or executing code. The sandboxed nature and safety limits further mitigate risk.
From the tool's definition Tool name 'search_by_content_text' and description 'Search for text files containing specific text with context preview' indicate a query/retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
Search for text files containing specific text with context preview. It is categorised as a Read tool in the LocalFS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the LocalFS MCP Server MCP server in PolicyLayer and add a rule for search_by_content_text: 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 LocalFS MCP Server. Nothing to install.
search_by_content_text 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 search_by_content_text 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 search_by_content_text. 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.
search_by_content_text is provided by the LocalFS MCP Server MCP server (mcp-bridge/local-filesystem). 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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