claude_read_file

Read a file from the PC filesystem. Returns the file contents as text.

SERVERClaude Bridge SOURCE0motionguy/claude-bridge-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/0motionguy-claude-bridge-mcp/claude-read-file.md

WHAT IT DOES

What claude_read_file does on Claude Bridge

AI agents call claude_read_file to retrieve information from Claude Bridge without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why claude_read_file is rated Low

The tool's sole function is to retrieve and return file contents. It does not modify, delete, execute, or move data. While it could expose sensitive information if misused, the action itself is non-destructive read-only access, making it a Read category tool with low severity.

From the tool's definition Tool name is 'claude_read_file' and description states 'Read a file from the PC filesystem. Returns the file contents as text.' This is a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs claude_read_file safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Claude Bridge, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For claude_read_file, this is the rule to start with:

claude_read_file Allowed

claude_read_file is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "claude_read_file": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Claude Bridge, apply this rule, and every claude_read_file call is checked against it from then on.

FAQ

Questions about claude_read_file

What does the claude_read_file tool do? +

Read a file from the PC filesystem. Returns the file contents as text. It is categorised as a Read tool in the Claude Bridge MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on claude_read_file? +

Register the Claude Bridge MCP server in PolicyLayer and add a rule for claude_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 Claude Bridge. Nothing to install.

What risk level is claude_read_file? +

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

Can I rate-limit claude_read_file? +

Yes. Add a rate_limit block to the claude_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 claude_read_file completely? +

Set action: deny in the PolicyLayer policy for claude_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 claude_read_file? +

claude_read_file is provided by the Claude Bridge MCP server (0motionguy/claude-bridge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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