AI agents call wiki_file_detect_format to retrieve information from Trac without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs format detection on local files—a read-only operation that retrieves or analyzes file metadata and content without creating, modifying, deleting, or executing anything. It has minimal blast radius even if misused, as it simply returns format information. Severity is low because detection failures cause no side effects.
From the tool's definition Tool name 'wiki_file_detect_format' and description indicate it 'Detect[s] the format of a local file' through inspection of 'file extension' and 'content-based heuristic detection'. No modification, deletion, execution, or financial operations are described.
Attacks that exploit this kind of access
Detect the format of a local file (Markdown or TracWiki). Uses file extension first, then content-based heuristic detection. It is categorised as a Read tool in the Trac MCP Server, which means it retrieves data without modifying state.
Register the Trac MCP server in PolicyLayer and add a rule for wiki_file_detect_format: 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 Trac. Nothing to install.
wiki_file_detect_format 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 wiki_file_detect_format 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 wiki_file_detect_format. 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.
wiki_file_detect_format is provided by the Trac MCP server (nerpatech/trac-mcp-server). 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.
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