Lit le contenu d
AI agents call lire_fichier to retrieve information from MCP File Explorer without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves file contents with no side effects. It performs a query/fetch operation on local files. No data is created, modified, deleted, or overwritten. Severity is low because file read operations have minimal blast radius—the tool can only expose existing data that the user has already authorized access to through the file system.
From the tool's definition Tool name 'lire_fichier' (French for 'read file') and server description states it 'enables Claude to read local text, CSV, and Markdown files.' The verb 'Lit' (reads) in the truncated description confirms retrieval without modification.
Attacks that exploit this kind of access
Lit le contenu d. It is categorised as a Read tool in the MCP File Explorer MCP Server, which means it retrieves data without modifying state.
Register the MCP File Explorer MCP server in PolicyLayer and add a rule for lire_fichier: 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 MCP File Explorer. Nothing to install.
lire_fichier 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 lire_fichier 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 lire_fichier. 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.
lire_fichier is provided by the MCP File Explorer MCP server (meima-ely/mcp-file-explorer). 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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