workspace_write_file

Write content to a file inside the container workspace (overwrites if exists).

SERVERHercules MCP SOURCE0xmihirk/hercules-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xmihirk-hercules-mcp/workspace-write-file.md

WHAT IT DOES

What workspace_write_file does on Hercules MCP

AI agents use workspace_write_file to create or update resources in Hercules MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hercules MCP environment.

RISK

Why workspace_write_file is rated Medium

This tool creates or modifies files within a containerized penetration testing environment. While it modifies data (Write category), the severity is high rather than critical because: (1) it operates within an isolated container rather than the host system; (2) the blast radius is limited to the workspace scope; (3) file overwrites are reversible within the container lifecycle.

From the tool's definition Tool description explicitly states 'Write content to a file inside the container workspace (overwrites if exists).' The verb 'write' and mention of overwriting indicate file modification capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs workspace_write_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_write_file, this is the rule to start with:

workspace_write_file Rate-limited

workspace_write_file stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "workspace_write_file": {
      "limits": [
        {
          "counter": "workspace_write_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hercules MCP, apply this rule, and every workspace_write_file call is checked against it from then on.

FAQ

Questions about workspace_write_file

What does the workspace_write_file tool do? +

Write content to a file inside the container workspace (overwrites if exists). It is categorised as a Write tool in the Hercules MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on workspace_write_file? +

Register the Hercules MCP server in PolicyLayer and add a rule for workspace_write_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.

What risk level is workspace_write_file? +

workspace_write_file is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit workspace_write_file? +

Yes. Add a rate_limit block to the workspace_write_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.

How do I block workspace_write_file completely? +

Set action: deny in the PolicyLayer policy for workspace_write_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.

What MCP server provides workspace_write_file? +

workspace_write_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.

KEEP EXPLORING

More on Hercules, and thousands of servers like it.

This server

All 45 Hercules tools →

Across the catalogue

team_manager_write_memory on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →