mcp_read_source

Read MCP server source code files

SERVERClaude C2 SOURCE0xyg3n/claude-c2

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xyg3n-claude-c2/mcp-read-source.md

WHAT IT DOES

What mcp_read_source does on Claude C2

AI agents call mcp_read_source to retrieve information from Claude C2 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why mcp_read_source is rated Low

This tool retrieves source code files without modifying or deleting them, fitting the Read category. Severity is elevated to medium because source code access can expose secrets, API keys, or architectural vulnerabilities if an agent exfiltrates files carelessly, but the tool itself performs only read operations.

From the tool's definition Tool name includes 'read' and description states 'Read MCP server source code files' — a retrieval action with no modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mcp_read_source safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Claude C2, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mcp_read_source, this is the rule to start with:

mcp_read_source Allowed

mcp_read_source 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": {
    "mcp_read_source": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Claude C2, apply this rule, and every mcp_read_source call is checked against it from then on.

FAQ

Questions about mcp_read_source

What does the mcp_read_source tool do? +

Read MCP server source code files. It is categorised as a Read tool in the Claude C2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mcp_read_source? +

Register the Claude C2 MCP server in PolicyLayer and add a rule for mcp_read_source: 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 C2. Nothing to install.

What risk level is mcp_read_source? +

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

Can I rate-limit mcp_read_source? +

Yes. Add a rate_limit block to the mcp_read_source 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 mcp_read_source completely? +

Set action: deny in the PolicyLayer policy for mcp_read_source. 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 mcp_read_source? +

mcp_read_source is provided by the Claude C2 MCP server (0xyg3n/claude-c2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Claude C2, and thousands of servers like it.

This server

All 94 Claude C2 tools →

Across the catalogue

claude_read_file on Claude Bridge → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →