Read content from a file between specified line numbers
AI agents call read_file to retrieve information from Mcp Ux Vision without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves file content within a specified range. It performs a read-only query with no capability to modify, delete, or execute code. The blast radius is minimal since it only exposes data already accessible to the server's file system. Confidence is high given the explicit 'read' terminology and clear lack of side effects in the description.
From the tool's definition Tool name is 'read_file' and description states it 'Read[s] content from a file between specified line numbers' — a pure retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Read content from a file between specified line numbers. It is categorised as a Read tool in the Mcp Ux Vision MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ux Vision MCP server in PolicyLayer and add a rule for read_file: 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 Ux Vision. Nothing to install.
read_file 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 read_file 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 read_file. 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.
read_file is provided by the Mcp Ux Vision MCP server (sfearl1/mcp-ux-vision). 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.
Teams ship this data inside their own products. See what a licence covers →