List all files in a GitHub repository, optionally filtered by extension.
AI agents call tool_list_files to retrieve information from Codelens-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read-only operation that retrieves file listings from a public repository. It has no side effects, cannot modify data, execute code, delete content, or affect financial systems. The information retrieved is from public GitHub repositories, minimizing blast radius if misused by an AI agent.
From the tool's definition Tool description states it 'List all files in a GitHub repository' with optional filtering. This is a retrieval operation with no modification or execution capability. The tool queries publicly accessible GitHub repository metadata.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List all files in a GitHub repository, optionally filtered by extension. It is categorised as a Read tool in the Codelens-MCP MCP Server, which means it retrieves data without modifying state.
Register the Codelens- MCP server in PolicyLayer and add a rule for tool_list_files: 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 Codelens-MCP. Nothing to install.
tool_list_files 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 tool_list_files 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 tool_list_files. 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.
tool_list_files is provided by the Codelens- MCP server (yashkashte5/codelens-mcp). 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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