Lê um recurso do servidor MCP externo
AI agents call proxy_read_resource to retrieve information from MCP Redirect Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves/reads resources from an external MCP server without creating, modifying, or deleting data. It qualifies as a Read operation. Severity is medium rather than low because: (1) it accesses external resources whose sensitivity is unknown, (2) it operates through a proxy layer that could expose data in transit, and (3) an AI agent could be tricked into reading sensitive resources if not properly…
From the tool's definition Tool name contains 'read' and description states 'Lê um recurso do servidor MCP externo' (Reads a resource from external MCP server). The 'proxy_' prefix indicates it retrieves data from an external service without modifying it.
Attacks that exploit this kind of access
Lê um recurso do servidor MCP externo. It is categorised as a Read tool in the MCP Redirect Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Redirect Server MCP server in PolicyLayer and add a rule for proxy_read_resource: 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 Redirect Server. Nothing to install.
proxy_read_resource 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 proxy_read_resource 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 proxy_read_resource. 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.
proxy_read_resource is provided by the MCP Redirect Server MCP server (marcos2872/mcp-redirect-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
proxy_read_resource is one line of MCP Redirect 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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