AI agents call review_code_file to retrieve information from Proxima without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Code review tools typically retrieve and analyze file content without modifying or executing code. However, the empty description limits confidence. If the tool merely reads a code file for analysis (e.g., style checking, complexity metrics), it is Read. If it executes code or modifies files, severity and category would be higher. Based on naming patterns and server context, Read is the most likely classification.
From the tool's definition Tool name 'review_code_file' suggests a read-only code analysis operation. The description is empty, which lowers confidence.
Documented attack patterns abuse exactly the kind of access review_code_file gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Proxima, and nothing reaches the server without passing your rules. This is the rule we recommend for review_code_file:
{
"version": "1",
"default": "deny",
"tools": {
"review_code_file": {}
}
}review_code_file is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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review_code_file. It is categorised as a Read tool in the Proxima MCP Server, which means it retrieves data without modifying state.
Register the Proxima MCP server in PolicyLayer and add a rule for review_code_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 Proxima. Nothing to install.
review_code_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 review_code_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 review_code_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.
review_code_file is provided by the Proxima MCP server (zen4-bit/proxima). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 50 Proxima tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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50 Proxima tools catalogued and risk-classified — across an index of 42,500+ MCP servers.