List the contents of a directory on the remote SSH server via SFTP. Returns: JSON array of directory entries with filename, type, size, permissions, and modification time Use cases: - Browse remote file systems - Check for specific files or directories - Verify deployments and file presence
AI agents call ssh_list_directory to retrieve information from Langfuse Observability without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about remote files via SFTP without creating, modifying, or deleting any data. The use cases confirm read-only intent: browsing, checking for files, and verifying deployments all involve querying state without side effects. No data is written, executed, or destroyed.
From the tool's definition Tool description explicitly states 'List the contents of a directory' and 'Browse remote file systems' — both read-only operations. Returns information about directory entries (filename, type, size, permissions, modification time) without modifying data.
Attacks that exploit this kind of access
List the contents of a directory on the remote SSH server via SFTP. Returns: JSON array of directory entries with filename, type, size, permissions, and modification time Use cases: - Browse remote file systems - Check for specific files or directories - Verify deployments and file presence. It is categorised as a Read tool in the Langfuse Observability MCP Server, which means it retrieves data without modifying state.
Register the Langfuse Observability MCP server in PolicyLayer and add a rule for ssh_list_directory: 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 Langfuse Observability. Nothing to install.
ssh_list_directory 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 ssh_list_directory 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 ssh_list_directory. 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.
ssh_list_directory is provided by the Langfuse Observability MCP server (langfuse-observability-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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