grep_file
AI agents call grep_file to retrieve information from Tacc Mcp Bio without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The grep_file tool appears to search files for patterns, a non-destructive read operation. While the description is empty (lowering confidence slightly), the name strongly indicates it retrieves/queries data without modifying state. In an HPC context, this would allow viewing file contents but not altering them. Severity is low as misuse results only in information disclosure, not system damage or data loss.
From the tool's definition Tool name 'grep_file' suggests searching/querying file contents for pattern matches, which is a read operation typical of the grep utility. No description provided.
Attacks that exploit this kind of access
grep_file. It is categorised as a Read tool in the Tacc Mcp Bio MCP Server, which means it retrieves data without modifying state.
Register the Tacc Mcp Bio MCP server in PolicyLayer and add a rule for grep_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 Tacc Mcp Bio. Nothing to install.
grep_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 grep_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 grep_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.
grep_file is provided by the Tacc Mcp Bio MCP server (narasimhan-lab/tacc-mcp-bio). 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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