Low Risk

read_file

Read and display the contents of a file from the repository.

How to control read_file ↓

What read_file does on Code Analysis MCP Server

AI agents call read_file to retrieve information from Code Analysis MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why read_file needs a policy

This tool retrieves file contents from a repository for examination purposes. It performs no write, delete, execute, or financial operations. The action is informational only with no ability to modify, destroy, or trigger external effects. Typical blast radius is low—an AI agent reading files cannot cause damage beyond potential information disclosure, which is constrained by file-system access controls.

From the tool's definition Tool name: 'read_file'. Description: 'Read and display the contents of a file from the repository.' The verb 'read' and 'display' indicate retrieval without modification or side effects.

Documented attack patterns abuse exactly the kind of access read_file gives an agent:

How to control read_file

PolicyLayer is an MCP gateway — it sits between your AI agents and Code Analysis MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for read_file:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "read_file": {}
  }
}

read_file is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Code Analysis MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about read_file

What does the read_file tool do? +

Read and display the contents of a file from the repository. It is categorised as a Read tool in the Code Analysis MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on read_file? +

Register the Code Analysis MCP Server 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 Code Analysis MCP Server. Nothing to install.

What risk level is read_file? +

read_file is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit read_file? +

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.

How do I block read_file completely? +

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.

What MCP server provides read_file? +

read_file is provided by the Code Analysis MCP Server MCP server (saiprashanths/code-analysis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Code Analysis MCP Server tool call.

Start from Code Analysis MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

4 Code Analysis MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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