AI agents call fd_recent_files to retrieve information from Fd without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves information about recently modified files by checking their modification timestamps. It performs a read-only search operation that returns matching file paths without side effects.
From the tool's definition Tool is named 'fd_recent_files' and described as 'find recently modified files'. The description uses action verbs like 'find' and 'Instantly find' which indicate retrieval/querying of metadata about file modification times, with no mention of modifying,…
Attacks that exploit this kind of access
🕐 RECENT CHANGES FINDER: Instantly find recently modified files (faster than find -mtime). It is categorised as a Read tool in the Fd MCP Server, which means it retrieves data without modifying state.
Register the Fd MCP server in PolicyLayer and add a rule for fd_recent_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 Fd. Nothing to install.
fd_recent_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 fd_recent_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 fd_recent_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.
fd_recent_files is provided by the Fd MCP server (thhart/fd-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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