workspace_read_file
Read the contents of a file inside the container workspace.
This record as markdown: /tools/0xmihirk-hercules-mcp/workspace-read-file.md
What workspace_read_file does on Hercules MCP
AI agents call workspace_read_file to retrieve information from Hercules MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why workspace_read_file is rated Low
The tool retrieves file contents without side effects. However, severity is elevated from 'low' to 'medium' because: (1) the container runs Kali Linux with offensive security tools, and an AI agent could read sensitive files like credentials, keys, or payloads stored in the workspace; (2) in a penetration testing context, reading tool outputs or configuration files could expose attack strategies or reconnaissance…
From the tool's definition Tool description states 'Read the contents of a file inside the container workspace' — a straightforward read operation with no write or destructive capability.
Attacks that exploit this kind of access
The rule that runs workspace_read_file safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hercules MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For workspace_read_file, this is the rule to start with:
workspace_read_file is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Hercules MCP, apply this rule, and every workspace_read_file call is checked against it from then on.
Questions about workspace_read_file
Read the contents of a file inside the container workspace. It is categorised as a Read tool in the Hercules MCP MCP Server, which means it retrieves data without modifying state.
Register the Hercules MCP server in PolicyLayer and add a rule for workspace_read_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 Hercules MCP. Nothing to install.
workspace_read_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 workspace_read_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 workspace_read_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.
workspace_read_file is provided by the Hercules MCP server (0xmihirk/hercules-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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