Get list of files available for sharing
AI agents call list_shared_files to retrieve information from JS-Peer x DeFi MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of available files on a peer-to-peer network. It is a read-only operation that retrieves information without creating, modifying, deleting, or executing any actions. The blast radius is minimal—misuse would only expose metadata about available files, not compromise funds, execute code, or irreversibly alter state.
From the tool's definition Tool name 'list_shared_files' and description 'Get list of files available for sharing' indicate a retrieval operation with no modification or execution of external systems.
Attacks that exploit this kind of access
Get list of files available for sharing. It is categorised as a Read tool in the JS-Peer x DeFi MCP Server MCP Server, which means it retrieves data without modifying state.
Register the JS-Peer x DeFi MCP Server MCP server in PolicyLayer and add a rule for list_shared_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 JS-Peer x DeFi MCP Server. Nothing to install.
list_shared_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 list_shared_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 list_shared_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.
list_shared_files is provided by the JS-Peer x DeFi MCP Server MCP server (nkovaturient/js-peer-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.
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