Read contents of a file
AI agents call read_file to retrieve information from MCP-Claude Code Bridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves file contents without any side effects or ability to modify, delete, or execute code. It is purely informational and poses minimal security risk in isolation, though sensitivity depends on what files might be accessible. Classified as Read/low severity.
From the tool's definition Tool name is 'read_file' and description states 'Read contents of a file' - clearly a read operation with no modification capability.
Attacks that exploit this kind of access
Read contents of a file. It is categorised as a Read tool in the MCP-Claude Code Bridge MCP Server, which means it retrieves data without modifying state.
Register the MCP-Claude Code Bridge 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-Claude Code Bridge. 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-Claude Code Bridge MCP server (sobieskicodes/claude-desktop-mcp-to-claude-agent). 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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